Battery

Abstract

To provide a novel battery.SOLUTION: There is provided a method for manufacturing a battery. The method includes: a positive electrode mixture manufacturing step of manufacturing a polymer resin metal complex for positive electrodes; a positive electrode plate manufacturing step of manufacturing a positive electrode plate by forming a layer containing the polymer resin metal complex for positive electrodes on a positive electrode collector plate; a negative electrode mixture manufacturing step of manufacturing a polymer resin metal complex for negative electrodes; a negative electrode plate manufacturing step of manufacturing a negative electrode plate by forming a layer containing the polymer resin metal complex for negative electrodes on a negative electrode collector plate; and a cell manufacturing step of manufacturing cells using the positive electrode plate and the negative electrode plate. The positive electrode mixture manufacturing step includes mixing an acrylic resin material with a compound containing a metal element to obtain a polymer resin metal complex for positive electrodes, and the negative electrode mixture manufacturing step includes mixing an acrylic resin material or polyvinyl alcohol with a compound containing a metal element having an oxidation number that fluctuates between bivalent and trivalent to obtain a polymer resin metal complex for negative electrodes.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a method for manufacturing a battery, a battery, a method for manufacturing a positive electrode, a method for manufacturing a positive electrode, a negative electrode, and a negative electrode. [Background technology]

[0002] Conventionally, lithium ion batteries have been known as batteries (Patent Document 1). However, lithium-ion batteries are flammable and pose a risk of fire. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6070822 Summary of the Invention [Problem to be solved by the invention]

[0004] Due to the above problems, new batteries are needed to replace lithium-ion batteries. An object of the present invention is to provide a novel battery. [Means for solving the problem]

[0005] That is, the present invention, which solves the above-mentioned problems, A method for manufacturing a battery, comprising: a positive electrode mixture manufacturing step for manufacturing a positive electrode polymer resin metal complex; a positive electrode plate manufacturing step of manufacturing a positive electrode plate by forming a layer containing the positive electrode polymer resin metal complex on a positive electrode current collector plate; a negative electrode mixture manufacturing step for manufacturing a negative electrode polymer resin metal complex; a negative electrode plate manufacturing step of manufacturing a negative electrode plate by forming a layer containing the negative electrode polymer resin metal complex on a negative electrode current collector plate; A cell manufacturing process includes manufacturing a cell using the positive electrode plate and the negative electrode plate, the positive electrode mixture preparation step includes mixing an acrylic resin material with a compound containing a metal element to obtain a positive electrode polymer resin-metal complex; The negative electrode mixture manufacturing step includes mixing an acrylic resin material or polyvinyl alcohol with a compound containing a metal element whose oxidation number changes between divalent and trivalent to obtain a polymer resin metal complex for a negative electrode; This is a method for manufacturing a battery. [Effects of the Invention]

[0006] According to the present invention, a novel method for manufacturing a battery can be provided. [Brief explanation of the drawings]

[0007] [Figure 1] Flowchart showing the manufacturing process of a battery [Figure 2] Flowchart showing the manufacturing method of the positive electrode plate [Figure 3] Flowchart showing the manufacturing method of the negative electrode plate [Figure 4] Diagram showing the structure of the positive electrode plate [Figure 5] Diagram showing the structure of the negative electrode plate [Figure 6] Diagram showing the structure of a battery [Figure 7] Schematic diagram showing the manufacturing method of the positive electrode plate and the negative electrode plate [Figure 8] Schematic diagram showing the battery manufacturing method [Figure 9] Graph showing data before battery charging [Figure 10] Graph showing battery charging data [Figure 11] Graph showing battery discharge data DETAILED DESCRIPTION OF THE INVENTION

[0008] The following describes the preferred embodiments of the present invention to aid in understanding the present invention. However, the present invention is not limited to the preferred embodiments below, and can be freely modified within the scope of the present invention.

[0009] The present invention provides a method for manufacturing a battery, comprising: a positive electrode mixture manufacturing step for manufacturing a positive electrode polymer resin metal complex; a positive electrode plate manufacturing step of manufacturing a positive electrode plate by forming a layer containing the positive electrode polymer resin metal complex on a positive electrode current collector plate; a negative electrode mixture manufacturing step for manufacturing a negative electrode polymer resin metal complex; a negative electrode plate manufacturing step of manufacturing a negative electrode plate by forming a layer containing the negative electrode polymer resin metal complex on a negative electrode current collector plate; A cell manufacturing process includes manufacturing a cell using the positive electrode plate and the negative electrode plate, the positive electrode mixture preparation step includes mixing an acrylic resin material with a compound containing a metal element to obtain a positive electrode polymer resin-metal complex; The negative electrode mixture manufacturing step includes mixing an acrylic resin material or polyvinyl alcohol with a compound containing a metal element whose oxidation number changes between divalent and trivalent to obtain a polymer resin metal complex for a negative electrode; This is a method for manufacturing a battery.

[0010] The battery manufactured by the method of manufacturing a battery according to the present invention is flame-retardant and has a long life.

[0011] In addition, in a preferred embodiment of the present invention, the step of producing a mixture for a positive electrode includes mixing an acrylic resin material with a compound containing a metal element whose oxidation number changes between pentavalent and tetravalent to obtain a polymer resin-metal complex for a positive electrode.

[0012] In a preferred embodiment of the present invention, the positive electrode mixture production step includes a step of mixing an acrylic resin material with a compound containing a metal having an oxidation number of five, The negative electrode mixture manufacturing step includes a step of mixing an acrylic resin material with a compound containing a metal with an oxidation number of divalent.

[0013] In a preferred embodiment of the present invention, the cell manufacturing step is a step of sandwiching a separator between the positive electrode plate and the negative electrode plate.

[0014] In a preferred embodiment of the present invention, the positive electrode mixture production step further includes mixing carbon, The negative electrode mixture manufacturing step further includes mixing carbon.

[0015] The present invention also provides a battery, A positive electrode plate, a negative electrode plate, and a separator, The positive electrode plate includes a positive electrode polymer resin metal complex and a positive electrode current collector plate, The polymer resin metal complex for the positive electrode contains an acrylic resin and a metal element, The negative electrode plate includes a negative electrode polymer resin metal complex and a negative electrode current collector plate, The polymer resin metal complex for the negative electrode contains an acrylic resin or polyvinyl alcohol and a metal element whose oxidation number changes between divalent and trivalent. It's also a battery.

[0016] The battery according to the present invention is flame retardant and has a long life.

[0017] The polymer resin metal complex for the positive electrode preferably contains an acrylic resin and a metal element whose oxidation number varies between pentavalent and tetravalent. Moreover, the polymer resin metal complex for a positive electrode preferably contains an acrylic resin and a metal element whose oxidation number varies between pentavalent and trivalent.

[0018] In a preferred embodiment of the present invention, the separator is sandwiched between the positive electrode plate and the negative electrode plate, The positive electrode plate and the negative electrode plate are stacked such that the surface coated with the positive electrode polymer complex and the surface coated with the negative electrode polymer complex face the separator.

[0019] The present invention also provides a method for manufacturing a positive electrode plate, a positive electrode mixture manufacturing step for manufacturing a positive electrode polymer resin metal complex; a positive electrode plate manufacturing step of manufacturing a positive electrode plate by forming a layer containing the positive electrode polymer resin metal complex on a positive electrode current collector plate, the positive electrode mixture preparation step includes mixing an acrylic resin material with a compound containing a metal element to obtain a positive electrode polymer resin-metal complex; This is also a method for manufacturing a positive electrode plate.

[0020] Preferably, the positive electrode mixture manufacturing step includes mixing an acrylic resin material with a compound containing a metal element whose oxidation number changes between pentavalent and tetravalent to obtain a polymer resin metal complex for a positive electrode. More preferably, the positive electrode mixture production step includes mixing an acrylic resin material with a compound containing a metal element whose oxidation number changes between pentavalent and trivalent to obtain a polymer resin metal complex for a positive electrode.

[0021] The present invention also provides a positive electrode plate, The positive electrode plate includes a positive electrode polymer resin metal complex and a positive electrode current collector plate, The polymer resin metal complex for the positive electrode contains an acrylic resin and a metal element. It is also the positive plate.

[0022] The present invention also preferably provides: The polymer resin metal complex for the positive electrode contains an acrylic resin and a metal element whose oxidation number varies between pentavalent and tetravalent.

[0023] The present invention also provides a method for manufacturing a negative electrode plate, a negative electrode mixture manufacturing step for manufacturing a negative electrode polymer resin metal complex; a negative electrode plate manufacturing step of manufacturing a negative electrode plate by forming a layer containing the negative electrode polymer resin metal complex on a negative electrode current collector plate, The negative electrode mixture manufacturing step includes mixing an acrylic resin material or polyvinyl alcohol with a compound containing a metal element whose oxidation number changes between divalent and trivalent to obtain a polymer resin metal complex for a negative electrode; This is also a method for manufacturing negative electrodes.

[0024] The present invention also provides a negative electrode plate, The negative electrode plate includes a negative electrode polymer resin metal complex and a negative electrode current collector plate, The polymer resin metal complex for the negative electrode contains an acrylic resin or polyvinyl alcohol and a metal element whose oxidation number changes between divalent and trivalent. It is also the negative electrode plate.

[0025] <1> Battery manufacturing method The present invention provides a method for manufacturing a battery, comprising: A positive electrode mixture manufacturing step (S1) for manufacturing a positive electrode polymer resin metal complex; a positive electrode plate manufacturing step (S2) of manufacturing a positive electrode plate (1) by forming a layer containing the positive electrode polymer resin metal complex on a positive electrode current collector plate (11); a negative electrode mixture manufacturing step (S3) for manufacturing a negative electrode polymer resin metal complex; a negative electrode plate manufacturing step (S4) of manufacturing a negative electrode plate (2) by forming a layer containing the negative electrode polymer resin metal complex on a negative electrode current collector plate (21); A cell manufacturing step (S5) of manufacturing a cell using the positive electrode plate (1) and the negative electrode plate (2), The positive electrode mixture production step (S1) includes mixing an acrylic resin material and a compound containing a metal element to obtain a positive electrode polymer resin-metal complex, The negative electrode mixture production step (S3) includes mixing an acrylic resin material or polyvinyl alcohol with a compound containing a metal element whose oxidation number changes between divalent and trivalent to obtain a polymer resin metal complex for a negative electrode, This is a method for manufacturing a battery.

[0026] The positive electrode mixture production step (S1) preferably includes mixing an acrylic resin material with a compound containing a metal element whose oxidation number changes between pentavalent and tetravalent to obtain a polymer resin metal complex for a positive electrode.

[0027] A flowchart of the battery manufacturing method is shown in Figure 1. Each step will be described in detail below.

[0028] <1-1>Cathode mixture manufacturing process (S1) In the positive electrode mixture production step (S1), a positive electrode polymer resin complex is produced. The positive electrode mixture production step (S1) also includes mixing an acrylic resin material with a compound containing a metal element to obtain a positive electrode polymer resin metal complex. The compound containing the metal element is preferably a compound containing a metal element whose oxidation number changes between pentavalent and tetravalent.

[0029] The acrylic resin material preferably contains a polymer of an acrylic acid ester monomer as a main component.

[0030] The average molecular weight of the acrylic resin material is preferably 3000 or more, more preferably 4000 or more, and even more preferably 4500 or more. The average molecular weight of the acrylic resin material is preferably 7000 or less, more preferably 6000 or less, and even more preferably 5500 or less. By setting the average molecular weight of the acrylic resin material within the above range, a positive electrode mixture having a desirable viscosity can be obtained.

[0031] The acrylic resin material may contain a copolymer of an acrylic acid monomer and another monomer (e.g., a methacrylic acid ester), which can improve properties such as hardness, durability, and weather resistance.

[0032] Furthermore, the acrylic resin material may contain a dispersant, which promotes uniform dispersion of the resin particles without agglomeration. Examples of the dispersant include anionic dispersants, cationic dispersants, and nonionic dispersants. Anionic dispersants are molecules that have charged anionic groups on the surface of resin particles, which cause the resin particles to repel each other and prevent aggregation. Examples of anionic dispersants include carboxylates and sulfonates. Cationic dispersants are molecules that have charged cationic groups on the surface of resin particles, which cause the resin particles to repel each other and prevent aggregation. Examples of cationic dispersants include amine compounds and quaternary ammonium salts. Nonionic dispersants are uncharged molecules that adsorb to the surface of resin particles and aid in dispersion. Examples of nonionic dispersants include polyacrylic acid and polyethylene glycol.

[0033] The acrylic resin material may also contain a stabilizer, which can prevent the resin from deteriorating. Examples of the stabilizer include antioxidants, light stabilizers, metal complexes, and infrared absorbers. Antioxidants prevent reactions with oxygen and slow the deterioration of resins, thereby extending the life of the resins. Light stabilizers prevent degradation due to light, such as ultraviolet rays, and prevent fading and deterioration. Metal complexes prevent deterioration due to oxidation and light, and in particular prevent metal ions such as copper and iron from acting as catalysts in the resin. Infrared absorbers prevent and delay deterioration due to infrared rays.

[0034] The acrylic resin material is preferably a liquid at room temperature (25° C.). By using an acrylic resin material that is a liquid at room temperature, a layer containing a polymer resin metal complex for a positive electrode can be easily formed on the positive electrode current collector plate (11).

[0035] The acrylic resin material may be a polymer of one or more monomers selected from methyl acrylate, ethyl acrylate, butyl acrylate, n-butyl acrylate, 2-ethylhexyl acrylate, 2-(dimethylamino)ethyl acrylate, and 2-hydroxyethyl acrylate, and / or a copolymer of the above monomers with other monomers (e.g., methacrylic acid esters).

[0036] Examples of metal elements whose oxidation number changes between pentavalent and tetravalent include vanadium (V), niobium (Nb), and tantalum (Ta), with vanadium (V) being preferred.

[0037] It is preferable that the metal element whose oxidation number changes between pentavalent and tetravalent also changes between divalent and trivalent.

[0038] In the present embodiment, the positive electrode mixture production step preferably includes a step of mixing an acrylic resin material with a compound containing a metal with an oxidation number of 5.

[0039] Examples of compounds containing a pentavalent metal include vanadium oxide (V2O5), vanadates, and metavanadate (HVO3), with vanadium oxide and vanadates being preferred. Examples of vanadates include ammonium vanadate (NH4VO3), sodium vanadate (NaVO3), and potassium vanadate (KaVO3), with ammonium vanadate (NH4VO3) being preferred.

[0040] In the positive electrode mixture manufacturing step (S1), the metal element forms a coordinate bond with an oxygen atom and forms a complex with the carboxyl group and methyl group of acrylic acid to form an acrylate complex.

[0041] In the present embodiment, the positive electrode mixture manufacturing step may include a step of mixing an acrylic resin material with a compound containing a metal with an oxidation number of 4.

[0042] The ratio of the acrylic resin material to the metal element is preferably such that the acrylic resin material is in excess, i.e., the ratio of the acrylic resin material to the compound containing a metal with an oxidation number of 5 is preferably such that the acrylic resin material is in excess. Specifically, the weight ratio of the acrylic resin material to the compound containing a metal with a pentavalent or tetravalent oxidation number is preferably 1:0.03-0.20, more preferably 1:0.05-0.15, and even more preferably 1:0.08-0.12. A sufficient amount of acrylic resin material can be added, and the battery according to the present invention can be produced more reliably.

[0043] The positive electrode mixture (12) may contain materials other than the positive electrode polymer resin complex.

[0044] The positive electrode mixture preparation step (S1) preferably further includes mixing carbon, which is preferably carbon powder.

[0045] The ratio of the acrylic resin material, the compound containing a pentavalent or tetravalent metal, and carbon is preferably 1:0.03-0.20:0.03-0.20, more preferably 1:0.05-0.15:0.05-0.15, and even more preferably 1:0.08-0.12:0.08-0.12. By setting the numerical value within the above range, a sufficient amount of acrylic resin material can be added, and the battery according to the present invention can be produced more reliably.

[0046] <1-2> Positive electrode plate manufacturing process (S2) The present invention includes a positive electrode plate manufacturing step (S2) of manufacturing a positive electrode plate by forming a layer containing a polymer resin metal complex for a positive electrode on a positive electrode current collector plate (11).

[0047] As the positive electrode current collector plate (11), a copper plate or a carbon graphite plate can be preferably used, with carbon graphite being more preferred.

[0048] The thickness of the positive electrode current collector (11) is preferably 0.01 mm or more, more preferably 0.03 mm or more, and even more preferably 0.05 mm or more. The thickness of the positive electrode current collector (11) is preferably 0.015 mm or less, more preferably 0.12 mm or less, and even more preferably 0.1 mm or less. By setting the thickness of the positive electrode current collector (11) within the above range, the efficiency of the battery can be improved.

[0049] The polymer resin metal complex for the positive electrode may be the one produced in the positive electrode mixture production step (S1).

[0050] The thickness of the layer containing the polymer resin metal complex for the positive electrode is preferably 5 μm or more, more preferably 10 μm or more, and even more preferably 20 μm or more, and is preferably 150 μm or less, more preferably 100 μm or less, and even more preferably 80 μm or less. By setting the thickness of the layer containing the polymer resin metal complex for the positive electrode within the above range, the efficiency of the battery can be improved.

[0051] In the positive electrode plate manufacturing process, preferably, a layer containing a polymer metal complex for a positive electrode is formed on a positive electrode current collector plate, and then the positive electrode current collector plate is irradiated with far infrared rays.

[0052] In addition, in the positive electrode plate manufacturing process, as shown in FIG. 7, it is preferable to unroll the roll of positive electrode current collector plate, form a layer containing a positive electrode polymer complex (positive electrode mixture) using a coater, irradiate with far infrared rays, and then roll it again with the layer containing the positive electrode polymer complex (positive electrode mixture) facing inward.

[0053] <1-3> Negative electrode mixture manufacturing process (S3) In the negative electrode mixture preparation step (S3), a polymer resin complex for a negative electrode is prepared. The negative electrode mixture preparation step (S3) also includes mixing an acrylic resin material or polyvinyl alcohol with a compound containing a metal element whose oxidation number changes between divalent and trivalent to obtain a polymer resin metal complex for a negative electrode.

[0054] Acrylic resin materials are <1> The same as that explained in <1-1> can be used.

[0055] Examples of metal elements whose oxidation number changes between divalent and trivalent include iron (Fe), cobalt (Co), and manganese (Mn), with iron (Fe) being preferred.

[0056] In this embodiment, the negative electrode mixture production step preferably includes a step of mixing an acrylic resin material with a compound containing a metal with an oxidation state of 2. In particular, when a compound containing a metal with a pentavalent oxidation state is used in the positive electrode mixture production step, it is preferable to use a compound containing a metal with an oxidation state of 2. On the other hand, particularly when a compound containing a metal with a tetravalent oxidation number is used in the positive electrode mixture production step, it is preferable to use a compound containing a metal with a trivalent oxidation number.

[0057] Examples of compounds containing a divalent metal include iron oxide (FeO), iron sulfate (FeSO4), and iron chloride (FeCl2), with iron oxide (FeO) being preferred.

[0058] Hereinafter, in the negative electrode mixture production process (S3), a metal element whose oxidation number changes between divalent and trivalent forms a coordinate bond with an oxygen atom, forming a complex with the carboxyl group or methyl group of acrylic acid or polyvinyl alcohol, thereby forming an acrylate complex.

[0059] In this embodiment, the negative electrode mixture production step may include a step of mixing an acrylic resin material or polyvinyl alcohol with a compound containing a metal with an oxidation number of trivalent.

[0060] The ratio of the acrylic resin material or polyvinyl alcohol to the metal element whose oxidation number varies between divalent and trivalent is preferably such that the acrylic resin material or polyvinyl alcohol is in excess. That is, the ratio of the acrylic resin material or polyvinyl alcohol to the compound containing a divalent metal is also preferably such that the acrylic resin material is in excess. Specifically, the ratio of the acrylic resin material or polyvinyl alcohol to the compound containing a divalent or trivalent metal is preferably 1:0.03-0.20, more preferably 1:0.05-0.15, and even more preferably 1:0.08-0.12. By setting the ratio within the above range, it is possible to add a sufficient amount of acrylic resin material or polyvinyl alcohol, and the battery according to the present invention can be produced more reliably.

[0061] The negative electrode mixture (22) may contain materials other than the negative electrode polymer resin complex.

[0062] The negative electrode mixture preparation step (S3) preferably further includes mixing carbon, which is preferably carbon powder.

[0063] The ratio of the acrylic resin material or polyvinyl alcohol, the compound containing a divalent or trivalent metal, and the carbon is preferably 1:0.03-0.20:0.03-0.20, more preferably 1:0.05-0.15:0.05-0.15, and even more preferably 1:0.08-0.12:0.08-0.12. By setting the ratio within the above range, it is possible to add a sufficient amount of acrylic resin material or polyvinyl alcohol, and the battery according to the present invention can be produced more reliably.

[0064] <1-4>Negative plate manufacturing process (S4) The present invention includes a negative electrode plate manufacturing step (S4) of manufacturing a negative electrode plate (2) by forming a layer containing a polymer resin metal complex for a negative electrode on a negative electrode current collector plate (21).

[0065] As the negative electrode current collector plate (21), an aluminum plate or a carbon graphite plate can be preferably used, with carbon graphite being more preferred.

[0066] The thickness of the negative electrode current collector (21) is preferably 0.01 mm or more, more preferably 0.03 mm or more, and even more preferably 0.05 mm or more. The thickness of the negative electrode current collector (11) is preferably 0.15 mm or less, more preferably 0.12 mm or less, and even more preferably 0.1 mm or less. By setting the thickness of the negative electrode current collector (21) within the above range, the efficiency of the battery can be improved.

[0067] The polymer resin metal complex for the negative electrode may be the one produced in the negative electrode mixture production step (S3).

[0068] The thickness of the layer containing the polymer resin metal complex for the negative electrode is preferably 5 μm or more, more preferably 10 μm or more, and even more preferably 20 μm or more, and the thickness of the layer containing the polymer resin metal complex for the positive electrode is preferably 150 μm or less, more preferably 100 μm or less, and even more preferably 80 μm or less. By setting the thickness of the layer containing the polymer resin metal complex for the negative electrode within the above range, the efficiency of the battery can be improved.

[0069] In the negative electrode plate manufacturing process, preferably, a layer containing a polymer metal complex for a negative electrode is formed on a negative electrode current collector plate, and then the negative electrode current collector plate is irradiated with far infrared rays.

[0070] In addition, in the negative electrode plate manufacturing process, as shown in FIG. 7, it is preferable to unroll the roll of negative electrode current collector plate, form a layer containing a negative electrode polymer complex (negative electrode mixture) using a coater, irradiate with far infrared rays, and then roll it again with the layer containing the negative electrode polymer complex (negative electrode mixture) facing inward.

[0071] <1-5> Cell manufacturing process (S5) The cell manufacturing step (S5) is preferably a step of sandwiching a separator (3) between the positive electrode plate (1) and the negative electrode plate (2).

[0072] The positive electrode plate (1) and the negative electrode plate (2) are preferably stacked so that the surface coated with the positive electrode mixture (12) and the surface coated with the negative electrode mixture (22) face the separator (3).

[0073] As the separator (3), cellulose acetate can be preferably used. By using cellulose acetate, the battery according to the present invention can be produced more reliably.

[0074] Furthermore, it is preferable to spray an electrolytic solution onto the separator, and an organic germanium solution, for example, can be used as the electrolytic solution. By using an organic germanium solution, the battery according to the present invention can be produced more reliably.

[0075] The thickness of the separator (3) is preferably 0.5 μm or more, more preferably 1.0 μm or more, and even more preferably 2.0 μm or more, and is preferably 30 μm or less, more preferably 20 μm or less, and even more preferably 10 μm or less. The thinner the separator (3), the lower the internal resistance.

[0076] In the cell production step (S5), it is preferable to further laminate an insulator (4) on the outside of the positive electrode plate (1) or the negative electrode plate (2). For example, as shown in Fig. 6, it is preferable to laminate the positive electrode plate (1) (the surface coated with the positive electrode mixture (12) faces the separator), the separator (3), the negative electrode plate (2) (the surface coated with the negative electrode mixture (22) faces the separator), and the insulator (4) in this order.

[0077] Thereafter, the laminated material is preferably pressed together using a pressing roller.

[0078] In the cell manufacturing process, as shown in FIG. 8, it is preferable to unroll the rolls of the positive electrode plate (1), separator (3), negative electrode plate (2), and insulator (4), press them together with a pressing roll, and then wind up the stacked assembly into a roll.

[0079] The resulting laminate is then preferably rolled up, placed in a polycarbonate can, and the electrolyte is added and sealed. When the insulator (4) is stacked on the negative electrode plate (2), the laminate may be rolled with either the positive electrode plate (1) or the insulator (4) facing outward. When the insulator (4) is stacked on the positive electrode plate (1), the laminate may be rolled with either the negative electrode plate (2) or the insulator (4) facing outward.

[0080] <2> battery The present invention provides a battery, comprising: The battery includes a positive electrode plate (1), a negative electrode plate (2), and a separator (3), The positive electrode plate (1) has a positive electrode polymer resin metal complex and a positive electrode current collector plate (11), The polymer resin metal complex for the positive electrode contains an acrylic resin and a metal element, The negative electrode plate (2) has a negative electrode polymer resin metal complex and a negative electrode current collector plate (21), The polymer resin metal complex for the negative electrode contains an acrylic resin and a metal element whose oxidation number changes between divalent and trivalent. It's a battery.

[0081] The polymer resin metal complex for the positive electrode preferably contains an acrylic resin and a metal element whose oxidation number varies between pentavalent and tetravalent.

[0082] Each part will be described in detail below.

[0083] <2-1> Positive electrode plate (1) The structure of the positive electrode plate is shown in Figure 4. The positive electrode plate (1) has a positive electrode polymer resin metal complex and a positive electrode current collector plate (11), and the positive electrode polymer resin metal complex contains an acrylic resin and a metal element.

[0084] The polymer resin metal complex for the positive electrode preferably contains an acrylic resin and a metal element whose oxidation number varies between pentavalent and tetravalent.

[0085] The positive electrode plate (1) preferably includes a positive electrode current collector plate (11) and a positive electrode mixture (12), and the positive electrode mixture (11) includes a positive electrode polymer resin metal complex.

[0086] As a positive electrode current collector (11), <1> The method described in <1-2> above can be used.

[0087] As acrylic resin, <1> The one explained in <1-1> above can be used.

[0088] As a metal, <1> The one explained in <1-1> above can be used.

[0089] The metal element forms a coordinate bond with the oxygen atom and forms a complex with the carboxyl group and methyl group of the acrylic acid, forming a polymer metal complex for the positive electrode.

[0090] The ratio of the acrylic resin material to the metal element is preferably such that the acrylic resin material is in excess, i.e., the ratio of the acrylic resin material to the compound containing a metal with an oxidation number of 5 is also preferably such that the acrylic resin material is in excess. Specifically, the ratio of the acrylic resin material to the compound containing a pentavalent metal is preferably 1:0.03 to 0.20, more preferably 1:0.05 to 0.15, and even more preferably 1:0.08 to 0.12.

[0091] The positive electrode mixture (12) preferably further contains carbon, which is preferably carbon powder.

[0092] The ratio of the acrylic resin material, the compound containing a pentavalent metal, and carbon is preferably 1:0.03-0.20:0.03-0.20, more preferably 1:0.05-0.15:0.05-0.15, and even more preferably 1:0.08-0.12:0.08-0.12.

[0093] <2-2> Negative electrode plate (2) The structure of the negative electrode plate (2) is shown in FIG. The negative electrode plate (2) has a negative electrode polymer resin metal complex and a negative electrode current collector plate (21), and the negative electrode polymer resin metal complex contains an acrylic resin or polyvinyl alcohol and a metal element whose oxidation number changes between divalent and trivalent.

[0094] The negative electrode plate (2) preferably includes a negative electrode current collector plate (21) and a negative electrode mixture (22), and the negative electrode mixture (21) includes a negative electrode polymer resin metal complex.

[0095] As a negative electrode current collector (21), <1> The method described in <1-4> above can be used.

[0096] As acrylic resin, <1> The one explained in <1-1> above can be used.

[0097] As a metal whose oxidation number changes between divalent and trivalent, <1> The method described in <1-3> above can be used.

[0098] Metal elements whose oxidation number varies between divalent and trivalent can coordinate with oxygen atoms to form complexes with the carboxyl and methyl groups of acrylic acid, forming a polymer metal complex for the negative electrode.

[0099] The ratio of the acrylic resin material or polyvinyl alcohol to the metal element whose oxidation number varies between divalent and trivalent is preferably such that the acrylic resin material is in excess. That is, the ratio of the acrylic resin material or polyvinyl alcohol to the compound containing a metal whose oxidation number is divalent is also preferably such that the acrylic resin material or polyvinyl alcohol is in excess. Specifically, the ratio of the acrylic resin material or polyvinyl alcohol to the compound containing a divalent metal is preferably 1:0.05 to 0.15, and more preferably 1:0.08 to 0.12. By setting the ratio within the above range, it is possible to add a sufficient amount of acrylic resin material or polyvinyl alcohol, and the battery according to the present invention can be produced more reliably.

[0100] The negative electrode mixture (22) preferably further contains carbon, which is preferably carbon powder.

[0101] The ratio of the acrylic resin material or polyvinyl alcohol, the compound containing a divalent metal, and carbon is preferably 1:0.05-0.15:0.05-0.15, and more preferably 1:0.08-0.12:0.08-0.12. By setting the ratio within the above range, it is possible to add a sufficient amount of acrylic resin material or polyvinyl alcohol, and the battery according to the present invention can be produced more reliably.

[0102] <2-3> Separator (3) As a separator, <1> The method described in <1-5> above can be used.

[0103] <2-4> Battery The structure of the battery is shown in Figure 6. The battery according to this embodiment preferably has a structure in which a separator (3) is sandwiched between a positive electrode plate (1) and a negative electrode plate (2). The positive electrode plate (1) and the negative electrode plate (2) are preferably stacked so that the surface to which the positive electrode mixture (12) is applied and the surface to which the negative electrode mixture (22) is applied face the separator (3).

[0104] The battery according to this embodiment preferably further includes an insulator 4. Specifically, it is preferable to laminate the insulator 4 on the outside of the positive electrode plate 1 or the negative electrode plate 2.

[0105] The battery according to this embodiment is preferably a laminate of a positive electrode plate (1), a separator (3), a negative electrode plate (2), and an insulator (4) wound with the positive electrode plate (1) or the insulator (4) facing outward, and more preferably placed in a polycarbonate can, to which an electrolyte is added, and then sealed.

[0106] During charging, an oxidation reaction occurs at the positive electrode and a reduction reaction occurs at the negative electrode.

[0107] During discharge, a reduction reaction occurs at the positive electrode and an oxidation reaction occurs at the negative electrode. [Example]

[0108] <Material> Polyacrylic acid (5,000 Polyacrylic Acid): Wako First Grade, Fujifilm Wako Pure Chemical Industries, Ltd., molecular formula [-CH2CH(COOH)-], average molecular weight approximately 5,000 Ammonium vanadate (V): Fujifilm Wako Pure Chemical Industries, Ltd. Carbon graphite: Toyo Tanso, 0.05mm~0.1mm ·Copper plate Iron(II) Chloride Tetrahydrate, Reagent Grade, Fujifilm Wako Pure Chemical Industries, Ltd., Molecular Formula: FeCl2 4H2O Formaldehyde Aluminum plate Cellulose acetate: Mitsubishi Paper Mills, NanoBase2 Fluoroplastic resin (fluoroplastic resin, PTFE, tetrafluoroethylene), thickness 0.05 mm

[0109] [1] Positive electrode mixture manufacturing process (S1) 80 to 120 g of acrylic resin and 8 to 12 g of ammonium vanadate (V) were mixed and reacted, and 8 to 12 g of carbon and 3 g of water were further mixed into the resulting mixture. Through the above reaction, vanadium forms a coordinate bond with the oxygen atom and forms a complex with the carboxyl group and methyl group of the acrylic acid.

[0110] [2] Positive electrode plate manufacturing process (S2) The positive electrode mixture (12) obtained in the positive electrode mixture manufacturing process (S1) was applied to a positive electrode current collector (copper plate) (11). The size of the positive electrode current collector (11) was 60 mm (length) × 70 mm (width) × 0.05 mm (thickness). The thickness of the applied positive electrode mixture (12) was 10 μm or more and 100 μm or less. Thereafter, the positive electrode mixture (12) applied to the positive electrode current collector plate (11) was completely dried.

[0111] [3] Negative electrode mixture manufacturing process (S3) 80 to 120 g of aqueous acrylic resin and 8 to 12 g of iron (II) chloride were mixed and reacted, and the resulting mixture was further mixed with 8 to 12 g of carbon, 4 to 6 g of water, and 4 to 6 g of formaldehyde. Through the above reaction, the iron ions form coordinate bonds with the oxygen atoms of the carboxyl groups of the acrylic acid to form complexes.

[0112] [4] Negative electrode plate manufacturing process (S4) The negative electrode mixture (22) obtained in the negative electrode mixture production step (S3) was applied to a negative electrode current collector (aluminum plate) (21). The size of the negative electrode current collector (21) was 60 mm × 70 mm × 0.05 mm. The thickness of the applied negative electrode mixture (22) was 10 μm or more and 100 μm or less. Thereafter, the negative electrode mixture (22) applied to the negative electrode current collector plate (21) was completely dried.

[0113] [5] Cell manufacturing process (S5) A cell was manufactured by stacking the positive electrode plate (1) obtained by [1] to [2], the negative electrode plate (2) obtained by [3] to [4], a separator (3), and a fluororesin (insulator (4)). Cellulose acetate having a thickness of 0.9 μm to 10 μm was used as the separator 3. An organic germanium solution was sprayed onto the cellulose acetate as an electrolyte.

[0114] The stacking order was the positive electrode plate (1), separator (3), negative electrode plate (2), and insulator (4), as shown in Fig. 6. The positive electrode plate (1) was stacked so that the surface coated with the positive electrode mixture (12) and the surface coated with the negative electrode mixture (22) faced the separator (3). The laminate was pressed together with a pressing roller.

[0115] The resulting laminate was rolled up with the positive electrode facing outward, placed in a polycarbonate can, to which an electrolyte solution was added, and the can was then sealed.

[0116] The characteristics of the battery are shown in Table 1.

[0117] [Table 1]

[0118] [6] Charging The resulting battery was charged using a charger. Specifically, the positive electrode was connected to the positive charge side and charging was performed at 10 mA to 40 mA. Charging was performed at approximately 20,000 mW / sec. Charging was stopped when the voltage fell below 3.0 V.

[0119] During charging, an oxidation reaction occurs at the positive electrode and a reduction reaction occurs at the negative electrode.

[0120] Figure 9 shows the discharge data before the first charge, and Figure 10 shows the charging power data during the first charge.

[0121] The vertical axis of Figure 9 represents the discharge power (mW) at each time. Figure 9 shows that there is a slight discharge even before charging.

[0122] The line graph in FIG. 10 represents the charging power (mW) at each time (corresponding to the vertical axis on the left), and the bar graph represents the total charging power (mW) up to that time (corresponding to the vertical axis on the right). From FIG. 10, it can be seen that the battery manufactured in this example can be charged.

[0123] [7] Discharge The charged battery was then discharged at a power output limit of 20 mA / sec.

[0124] During discharge, a reduction reaction occurs at the positive electrode and an oxidation reaction occurs at the negative electrode.

[0125] Figure 11 shows the discharge data after the first charge. The bar graph shows the discharge power (mW) at each time (corresponding to the vertical axis on the left), and the line graph shows the total discharge power (mW) up to that time (corresponding to the vertical axis on the right). From FIG. 11, it can be seen that the battery manufactured in this example is capable of discharging. [Industrial Applicability]

[0126] According to the present invention, a novel battery can be provided. [Explanation of symbols]

[0127] 1: Positive electrode plate 11: Positive current collector plate 12: Mixture for positive electrode 2: Negative electrode plate 21: Negative electrode current collector plate 22: Negative electrode mixture 3: Separator 4: Insulator 5:Battery

Claims

1. A method for manufacturing a battery, comprising: a positive electrode mixture manufacturing step for manufacturing a positive electrode polymer resin metal complex; a positive electrode plate manufacturing step of manufacturing a positive electrode plate by forming a layer containing the positive electrode polymer resin metal complex on a positive electrode current collector plate; a negative electrode mixture manufacturing step for manufacturing a negative electrode polymer resin metal complex; a negative electrode plate manufacturing step of manufacturing a negative electrode plate by forming a layer containing the negative electrode polymer resin metal complex on a negative electrode current collector plate; A cell manufacturing process includes manufacturing a cell using the positive electrode plate and the negative electrode plate, the positive electrode mixture preparation step includes mixing an acrylic resin material with a compound containing a metal element to obtain a positive electrode polymer resin-metal complex; the negative electrode mixture preparation step includes mixing an acrylic resin material or polyvinyl alcohol with a compound containing a metal element whose oxidation number changes between divalent and trivalent to obtain a polymer resin-metal complex for a negative electrode; How batteries are manufactured.

2. the positive electrode mixture production step includes a step of mixing an acrylic resin material with a compound containing a metal having an oxidation number of five, the negative electrode mixture production step includes a step of mixing an acrylic resin material or polyvinyl alcohol with a compound containing a metal having an oxidation number of divalent; A method for manufacturing the battery according to claim 1.

3. The cell manufacturing process is a process of sandwiching a separator between the positive electrode plate and the negative electrode plate. The method for manufacturing the battery according to claim 1 or 2.

4. The positive electrode mixture manufacturing step further includes mixing carbon, The negative electrode mixture manufacturing step further includes mixing carbon. The method for manufacturing the battery according to claim 1 or 2.

5. A battery, A positive electrode plate, a negative electrode plate, and a separator, The positive electrode plate includes a positive electrode polymer resin metal complex and a positive electrode current collector plate, The polymer resin metal complex for the positive electrode contains an acrylic resin and a metal element, The negative electrode plate includes a negative electrode polymer resin metal complex and a negative electrode current collector plate, The polymer resin metal complex for the negative electrode contains an acrylic resin and a metal element whose oxidation number changes between divalent and trivalent. battery.

6. The separator is sandwiched between the positive electrode plate and the negative electrode plate, The positive electrode plate and the negative electrode plate are laminated such that a surface of the positive electrode plate coated with the positive electrode polymer complex and a surface of the negative electrode plate coated with the negative electrode polymer complex are on the separator side. The battery of claim 5.

7. A method for manufacturing a positive electrode plate, a positive electrode mixture manufacturing step for manufacturing a positive electrode polymer resin metal complex; a positive electrode plate manufacturing step of manufacturing a positive electrode plate by forming a layer containing the positive electrode polymer resin metal complex on a positive electrode current collector plate, the positive electrode mixture preparation step includes mixing an acrylic resin material with a compound containing a metal element to obtain a positive electrode polymer resin-metal complex; Manufacturing method of positive electrode plate.

8. A positive electrode plate, The positive electrode plate includes a positive electrode polymer resin metal complex and a positive electrode current collector plate, The polymer resin metal complex for the positive electrode contains an acrylic resin and a metal element. Positive electrode plate.

9. A method for manufacturing a negative electrode plate, a negative electrode mixture manufacturing step for manufacturing a negative electrode polymer resin metal complex; a negative electrode plate manufacturing step of manufacturing a negative electrode plate by forming a layer containing the negative electrode polymer resin metal complex on a negative electrode current collector plate, the negative electrode mixture preparation step includes mixing an acrylic resin material or polyvinyl alcohol with a compound containing a metal element whose oxidation number changes between divalent and trivalent to obtain a polymer resin-metal complex for a negative electrode; Method for manufacturing negative electrode plates.

10. A negative electrode plate, The negative electrode plate includes a negative electrode polymer resin metal complex and a negative electrode current collector plate, The polymer resin metal complex for the negative electrode contains an acrylic resin or polyvinyl alcohol and a metal element whose oxidation number changes between divalent and trivalent. Negative electrode plate.

Images