298results about "Organic electrolyte cells" patented technology

A non-woven battery separator and processes for forming the non-woven battery separator includes a fiber blend including cellulose fibers, microfibrillated fibers, and optionally polyester and / or aramid fibers. Also disclosed are batteries including the non-woven battery separator. During fabrication, the non-woven battery separator can be effectively dried at temperatures between 120°C and 180°C, which results in the fibers absorbing water when in use. Some battery electrolytes such as lithium hexafluorophosphate react with water to form hydrogen fluoride (HF), which can be corrosive and shorten battery lifecycles and affect performance. Absorbing water from the electrolyte increases the battery life cycle by reducing HF generation.

A battery cell comprising a composite water-responsive safety layer and / or composite water- and pH-responsive safety layer to protect against bodily tissue damage and / or electrolysis, when the battery cell is exposed to aqueous solution or bodily tissue, is provided.

A disclosed cylindrical lithium primary battery (100) includes: an electrode group (10) in which a positive electrode (1), a negative electrode (2), and a separator (3) are wound; a short-circuit metal sheet (21) disposed on the negative electrode (1); and a battery case that accommodates the electrode group (10) and functions as a negative electrode terminal. The positive electrode (1) includes: a positive electrode current collector having a plurality of through holes; and a positive electrode mixture layer disposed on the positive electrode current collector. The positive electrode has a current collector exposed part (1c) where a part of the positive electrode current collector is exposed. The negative electrode (2) includes a lithium-containing metal sheet. The short-circuit metal sheet (21) contains at least one metal element M selected from the group consisting of copper, iron, nickel, and zinc. At least a part of the short-circuit metal sheet (21) and at least a part of the current collector exposed part (1c) face each other across the separator (3). The short-circuit metal sheet (21) is electrically connected to the battery case not through the lithium-containing metal sheet.

Disclosed is a cylindrical lithium primary battery (100) including: an electrode group (10) in which a positive electrode (1), a negative electrode (2), and a separator (3) are wound; an electrically insulating layer (22) disposed inside the electrode group (10); a short-circuiting metal sheet (21) disposed on the negative electrode (2); and a battery case (9). The positive electrode (1) includes a positive electrode mixture layer disposed on a positive electrode current collector. The negative electrode (2) includes a lithium-containing metal sheet. The short-circuiting metal sheet (21) contains at least one metal element M selected from the group consisting of copper, iron, nickel, and zinc. The lithium-containing metal sheet, the short-circuiting metal sheet (21), and the battery case (9) are electrically connected. The electrode group (10) has a layered portion (10x) in which the electrically insulating layer (22) is disposed. In the layered portion, the lithium-containing metal sheet, the short-circuiting metal sheet (21), the separator (3), the positive electrode (1), and the electrically insulating layer (22) are laminated in a prescribed order.

The invention provides positive electrode slurry of a low-temperature lithium carbon fluoride battery and a slurry homogenizing method, the positive electrode slurry comprises a positive electrode active material, perfluorooctyl sulfonate, a binder, a conductive agent and a solvent, and the mass ratio of the positive electrode active material to the perfluorooctyl sulfonate is (85-90): (1-6); the homogenizing method comprises the following steps: uniformly mixing a positive electrode active material, perfluorooctyl sulfonate and a conductive agent according to a ratio to obtain a first mixture; dissolving a binder in a solvent according to a ratio to obtain a second mixture; and uniformly mixing the first mixture and the second mixture to obtain the positive electrode slurry of the low-temperature lithium carbon fluoride battery. The perfluorooctyl sulfonate is introduced into the positive electrode slurry, and through the synergism of the following effects: the diffusion path of lithium ions is reduced, the desolvation energy barrier of the lithium ions is reduced, the conductive agent is uniformly dispersed and participates in electrochemical reaction to generate fluoride with conductivity better than that of lithium fluoride, and the electrochemical performance of the low-temperature lithium carbon fluoride battery is improved.

The invention discloses a fluorine ion stabilizer, a lithium carbon fluoride battery electrolyte and a lithium carbon fluoride battery, and belongs to the field of lithium batteries. The fluorine ion stabilizer is prepared from a 1-ethyl-3-methylimidazole cation compound and an alcohol compound; the alcohol compound is selected from at least one of ethylene glycol and polyethylene glycol; the molecular weight of the polyethylene glycol is 62 to 3000. The binding energy of the fluorine ion stabilizer and fluorine ions is low, a solvation product can be stabilized, the final discharge product of the Li / CFx battery is changed, and finally the purpose of reducing the heat produced in the discharge process of the battery is achieved.

An electrolyte composition includes: a sulfonylimide compound represented by the following general formula (1) as an electrolyte salt; and an amidosulfuric acid component.LiN(X1SO2)(X2SO2)  (1)(where X1 and X2 are identical to or different from each other, and each represent a fluorine atom, an alkyl group with a carbon number of 1 to 6, or a fluoroalkyl group with a carbon number of 1 to 6).

To provide a sheet-like lithium primary battery having an excellent storage characteristic, and a manufacturing method for the same.SOLUTION: A sheet-like lithium primary battery of the present invention, is formed by housing a negative electrode, a positive electrode, a separator, and a non-aqueous electrolyte that contain a lithium or a lithium alloy in an outer casing constructed by a laminate film having a heat deposition resin layer. A volume of a gas increased in a battery when it is stored for 30 days under an atmosphere of 70°C and 90% of a relative humidity, and is 20% of a content volume in the battery before the storage. A manufacturing method of the sheet-like lithium primary battery of the present invention, includes: a temporal sealing step of sealing a power generation element in an outer housing; a preparation discharge step of discharging one part of a capacitance provided in a temporal assembly; a storage step of holding the temporal assembly in a heating state; a degasification step of opening a part of the outer casing after that, and removing a gas in an inner part; and a main sealing step of sealing the outer casing after the degasification step.SELECTED DRAWING: Figure 4

Provided in the present application are a button lithium primary battery and a preparation method therefor, and an electronic device. The button lithium primary battery comprises a battery casing (10) and a battery cell assembly located inside the battery casing (10), wherein the battery cell assembly comprises a negative electrode (3), a negative-electrode modification membrane (4), separators (5, 6) and a positive electrode (7), which are sequentially stacked; a recess (9) is provided on the surface of the side of the negative electrode (3) that is close to the negative-electrode modification membrane (4); and the negative-electrode modification membrane (4) is tightly embedded in the recess (9). By means of optimizing the structure and the material of the button lithium primary battery in the present application, the button lithium primary battery has an excellent discharge performance, and good levels of stability and reliability.

To provide a composition for an electrolyte capable of suppressing gas generation during high-temperature storage, and to provide an electrochemical device, a secondary battery and a lithium ion secondary battery using the composition for the electrolyte.SOLUTION: The composition for an electrolytic solution contains a compound (A) represented by formula (A). (A) Rf1-O-CH2-CH2-O-R1 (wherein Rf1 is a fluoroalkyl group having 1 to 6 carbon atoms, and R1 is H, Li, Na, K or Cs); ) SELECTED DRAWING: None

A lithium primary battery including: a positive electrode; a negative electrode; a separator disposed between the positive electrode and the negative electrode; and a non-aqueous electrolyte solution, in which the positive electrode contains a positive electrode active material and a conductive material, the positive electrode active material contains at least one of manganese dioxide and graphite fluoride, the conductive material contains carbon black, the carbon black contains a metal element in an amount of 0.02 atomic % or more and 0.4 atomic % or less, the negative electrode contains a lithium alloy, the lithium alloy contains magnesium, and the content of the magnesium in the lithium alloy is 0.01 mass % or more and 11 mass % or less.

To provide an electrode mixture capable of improving capacity of a battery, and a battery containing such an electrode mixture.SOLUTION: An electrode mixture contains hard carbons. The electrode mixture contains a metal oxide, a metal element constituting the metal oxide is a d-block element of the fourth period, and a ratio of a mass of the metal oxide with respect to a total mass of the hard carbons and the metal oxide is less than 10 mass%. A battery 1 successively includes an anode collector layer 10, an anode active material layer 20, an electrolyte layer 30, a cathode active material layer 40 and a cathode collector layer 50 and any one of the anode active material layer and the cathode active material layer contains the electrode mixture.SELECTED DRAWING: Figure 1

The invention provides a lithium primary battery negative electrode with deep sea pressure bearing capacity and a preparation method thereof, and belongs to the technical field of deep sea lithium primary battery manufacturing, the lithium primary battery negative electrode comprises a negative electrode current collector, a lithium layer is arranged on the surface of the negative electrode current collector through electrochemical plating lithium, the surface of the lithium layer is coated with an SEI film layer, and an electroplating electrolyte of electrochemical plating lithium comprises a lithium salt and a solvent, the lithium salt comprises LiPF6, and the solvent comprises DMC. According to the present invention, with the electrochemical lithium plating method, the compact metal lithium layer can be deposited on the surface of the negative electrode current collector, and the metal lithium layer prepared through the method can maintain the close connection with the negative electrode current collector in the 0-127 MPa hydrostatic pressure environment, and can maintain the pressure resistance stability between the metal lithium layer and the SEI film in the pressure environment.

The disclosed lithium primary battery is provided with a positive electrode, a negative electrode, and a non-aqueous electrolyte solution. The positive electrode contains a positive electrode mixture, and the positive electrode mixture contains LixMnO2 (0 < = x < = 0.05) and a boron compound. The amount of boron atoms contained in the positive electrode mixture is from 0.01 parts by mass to 1.65 parts by mass (inclusive) per 100 parts by mass of manganese atoms contained in the positive electrode mixture. The negative electrode contains an alloy containing lithium and magnesium. The content of lithium in the alloy exceeds 88% by mass, and the content of magnesium in the alloy is 0.01-10% by mass (inclusive).

A cylindrical battery includes a battery element, an outer can having a bottomed cylindrical shape with an opening on one side, a sealing body that seals the opening of the outer can, and a welded portion in which the outer can and the sealing body are welded. The outer can houses the battery element, and the welded portion extends in a first direction along a boundary between the outer can and the sealing body. A value obtained by dividing a maximum welding depth from an outermost surface of the welded portion in the first direction by a maximum thickness of a thickness of the outer can and a thickness of the sealing body is 0.4 or more and 1.5 or less.

The invention belongs to the technical field of electrode materials, and provides a silver-vanadium oxide positive electrode material and a preparation method and application thereof, the chemical formula of the silver-vanadium oxide positive electrode material is Ag2V4O11, and the specific surface area is 0.6-1.5 m < 2 > / g; under the instantaneous current of 20mA / cm < 2 >, the average lag voltage is less than 350mV; under the instantaneous current of 40mA / cm < 2 >, the average lag voltage is less than 580mV; the BET is controlled within the range of 0.6-1.5 m < 2 > / g, so that the silver vanadium oxide positive electrode material capable of sufficiently reducing or avoiding the influence of internal resistance increase and voltage delay can be obtained. According to the design of the preparation method, low-temperature pre-calcination is carried out based on a decomposition window determined by DSC to form a segmented heat treatment process, the crystallinity and integrity of the silver-vanadium oxide crystal are remarkably improved, and the specific surface area (BET) of the material can be synchronously reduced, so that the specific surface area of the material reaches 0.6-1.5 m < 2 > / g.

The invention relates to the technical field of batteries, and discloses an electrolyte and application thereof, and a lithium carbon fluoride battery. The electrolyte comprises a lithium salt and an organic solvent; wherein the lithium salt is lithium bis (fluorosulfonyl) imide; the organic solvent is selected from one of ethylene glycol dimethyl ether, diethylene glycol dimethyl ether, triethylene glycol dimethyl ether, tetraethylene glycol dimethyl ether, ethylene glycol diethyl ether, ethylene carbonate, propylene carbonate, dimethyl carbonate, ethyl methyl carbonate, dimethylformamide, dimethylacetamide and dimethyl sulfoxide. The electrolyte can be applied to preparation of a lithium primary battery. The invention also relates to a lithium carbon fluoride battery comprising the electrolyte. The electrolyte system provides an optimized solution for the preparation of the high-energy-density lithium carbon fluoride battery, has a wide application prospect, can remarkably improve the performance of the battery, reduces the production cost, and promotes the further development of the lithium carbon fluoride battery technology.

The invention discloses a lithium / carbon fluoride battery electrolyte and application thereof. The lithium / carbon fluoride battery electrolyte comprises a lithium salt, an ester solvent and a ferrocene derivative. Ferrocene molecules are modified, and electron donating groups including amino, alkoxy, ester group and alkyl are introduced, so that the redox potential of ferrocene is reduced. The reduction potential is close to the potential of a carbon fluoride discharge platform, the purpose of accelerating carbon fluoride conversion is achieved, the solid-solid reaction of the battery is converted into the liquid-solid reaction, so that the polarization phenomenon is reduced, and heat generated when the carbon fluoride battery discharges is remarkably reduced. And meanwhile, the discharge capacity and the discharge rate capability of the battery are improved. Therefore, the battery has the characteristics of high energy density and high power, and is better in safety performance.

To provide a technique which can obtain a power storage device having a wound electrode body with high productivity.SOLUTION: A manufacturing method of a power storage device (for example, battery) of one embodiment disclosed herein includes: winding step S2 of winding a positive electrode 22 and a negative electrode 24 through a separator 26 to manufacture a wound body 20A; and pressing step S3 of press-molding the wound body 20A after the winding step S2 to form flat wound electrode bodies 20a, 20b, 20c. In the winding step S2, the separator which has an adhesive layer 6 partially on at least one surface is used. The adhesive layer 6 includes: a first adhesive area 6A; and a second adhesive area 6B. A thickness T1 of the first adhesive area 6A is 1.5 times or more of a thickness T2 of the second adhesive area 6B. Furthermore, herein, the method further includes formation step S1 before the winding step S2.SELECTED DRAWING: Figure 1

The present invention belongs to the technical field of lithium batteries, and particularly relates to a high-rate lithium / carbon monofluoride primary battery electrolyte and its application. By using sodium salts and / or potassium salts, the present invention changes the discharge mechanism of Li / CF x batteries, playing a dual role in the ion intercalation reaction mechanism and the nucleation and growth of discharge products. Compared with solvated Li + , the desolvation energy of solvated Na + with the same structure is about 30% lower, which transforms the original desolvation and intercalation mechanism involving lithium salts throughout the process into an early reaction between sodium ions and fluoride ions, reducing the reaction energy barrier of the early electrochemical reaction. At the same time, in various solvents, the Stokes radius of K + is smaller than that of Li + , which means that the diffusion rate of K + is faster, which can not only reduce polarization but also increase the ion intercalation rate, achieving good rate performance. Finally, the present invention realizes an increase in the discharge specific capacity and specific power of the battery, without sacrificing the specific capacity and specific power due to the increase in the mass of non-active substances.

To provide a production method for a non-aqueous electrolyte battery excellent in high-temperature storage characteristics and load characteristics at low temperature.SOLUTION: A production method for a non-aqueous electrolyte battery according to the present invention is a method for producing a non-aqueous electrolyte battery having a positive electrode, a negative electrode, a separator, and a non-aqueous electrolyte, and in the non-aqueous electrolyte battery, the negative electrode has a lithium layer with a lithium-aluminum alloy layer formed on its surface, and further has a carbon layer on the lithium-aluminum alloy layer, the carbon layer having a basis weight of 0.15 mg / cm2 or more, and the method includes the steps of laminating an aluminum layer on the surface of the lithium layer, further forming a carbon layer on the surface of the aluminum layer, and causing the lithium layer and the aluminum layer to react each other to form a lithium-aluminum alloy layer on the surface of the lithium layer.SELECTED DRAWING: Figure 1

The present application provides an electrolyte, a battery, and an electrical device. The electrolyte of the present application comprises a first additive represented by formula (I), wherein R is selected from one or more of halogen and MO-, and M is selected as an alkali metal. According to the electrolyte of the present application, the erosion of HF on cathode and anode SEI films can be inhibited, the redox reaction between the electrolyte and an anode or a cathode is reduced, the consumption of active lithium is reduced, the decomposition of a solvent in the electrolyte is inhibited, the amount of gas produced during the decomposition of the solvent is reduced, the cycle and storage performance of a secondary battery is improved, and the volume expansion and impedance of a battery cell are decreased.

A lithium primary battery including a wound electrode group, and a nonaqueous electrolyte solution. The electrode group includes a positive electrode having a belt shape, and a negative electrode having a belt shape, which are spirally wound with a separator disposed between the positive electrode and the negative electrode. The positive electrode contains both manganese dioxide and fluorinated graphite. The negative electrode includes a lithium alloy. The lithium alloy contains magnesium, and the content of the magnesium in the lithium alloy is 0.01 mass% or more and 11 mass% or less.

This lithium primary battery is provided with a positive electrode, a negative electrode, and a non-aqueous electrolyte solution. The positive electrode contains a positive electrode mixture that contains manganese dioxide and an oxide of a metal Me. The metal Me has a valence of 2 or more, an ion radius of 0.8 or less, and an electronegativity of 1.65 or less. The amount of the oxide of the metal Me contained in the positive electrode mixture is 0.1-5 parts by mass per 100 parts by mass of the manganese dioxide contained in the positive electrode mixture. The negative electrode contains an alloy containing lithium and magnesium. The content of lithium in the alloy is greater than 88% by mass, and the content of magnesium in the alloy is 0.01-10% by mass (inclusive).

The invention relates to the field of lithium primary batteries, in particular to an all-weather double-high lithium / carbon fluoride battery as well as a preparation method and application thereof. According to the invention, mixed acid pretreatment is carried out on the surface of CFx, an oxygen-containing functional group is introduced for surface oxygen modification, and the components of a discharge product are obviously changed through the design of a low-melting-point electrolyte, so that the lithium / carbon fluoride primary battery which can be used in all weathers is designed. The technical problems that a traditional Li / CFx primary battery electrolyte is high in melting point, high in viscosity, slow in ion transport kinetics at low temperature, high in electrode / electrolyte interface resistance and the like are solved, and the energy density and the power density of the Li / CFx primary battery in a wide temperature range are comprehensively improved. The preparation process of the electrolyte is simple, the yield is high, and the electrolyte is suitable for large-scale production and has a wide application prospect.

A lithium primary battery includes a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and a nonaqueous electrolyte solution. The positive electrode includes manganese dioxide, and the negative electrode includes a lithium alloy. The lithium alloy contains magnesium in an amount of 0.02 mass% or more and 11 mass% or less. A ratio N / P of a capacity N of the negative electrode to a capacity P of the positive electrode is 0.85 or more and 1.00 or less.

A lithium primary battery according to the present invention comprises a winding-type electrode group and a non-aqueous electrolyte. The electrode group is configured by winding, in a spiral shape, a strip-shaped positive electrode, a strip-shaped negative electrode, and a separator arranged between the positive electrode and the negative electrode. The positive electrode contains at least one material selected from the group consisting of manganese dioxide and graphite fluoride, and the negative electrode contains a lithium alloy. The lithium alloy is one or more selected from the group consisting of Mg and Al, and contains at least Mg, and the total content of Mg and Al in the lithium alloy is 0.02-11 mass%. The negative electrode has an outermost circumferential area arranged at the outermost circumference of the electrode group, and a main area further to an inner circumferential side than the outermost circumferential area. The ratio T1 / T2 of a thickness T1 of the outermost circumferential area to a thickness T2 of the main area is greater than 0.5 and less than 1.

A non-aqueous electrolyte solution contains a sulfonylimide compound represented by the general formula (1): LiN(R1SO2)(R2SO2) (wherein R1 and R2 are identical or different from each other and each represents a fluorine atom, an alkyl group having 1 to 6 carbon atoms, or a fluoroalkyl group having 1 to 6 carbon atoms) as an electrolyte salt, an electrolyte solution solvent, and at least one of carbon dioxide (CO2), carbon monoxide (CO), a bicarbonate ion (HCO3-), or a carbonate ion (CO32-) dissolved therein. The electrolyte solution solvent includes at least one selected from the group consisting of a carbonate solvent, a lactone solvent, an ether solvent, a nitrile solvent, and a chain ester solvent, and a total amount of the at least one of CO2, CO, HCO3-, or CO32- dissolved is 20 ppm by mass or more.

A lithium primary battery includes a positive electrode, a negative electrode, and a liquid non-aqueous electrolyte. The positive electrode contains a positive electrode material mixture including LixMnO2 where 0≤x≤0.05. The negative electrode contains at least one of metal lithium and a lithium alloy. The liquid non-aqueous electrolyte contains a cyclic imide component and an organic silyl borate component. The concentration of the cyclic imide component in the liquid non-aqueous electrolyte is 1 mass % or less, the concentration of the organic silyl borate component in the liquid non-aqueous electrolyte is 5.5 mass % or less, and the mass ratio of the cyclic imide component to the organic silyl borate component contained in the liquid non-aqueous electrolyte is 0.02 or more and 10 or less.

The present invention relates to: a nonaqueous electrolyte solution which contains an electrolyte salt and a phosphonic acid ester that is represented by general formula (I), and which satisfies at least one of the condition (A) and the condition (B) described below; and a power storage device which comprises a positive electrode, a negative electrode and the nonaqueous electrolyte solution. (In general formula (I), R1 represents an alkyl group, and each of R2 and R3 independently represents an alkynyl group having 3 to 6 carbon atoms.) Condition (A): In the formula, R1 is an alkyl group having 1 to 5 carbon atoms; at least one selected from among an anion-containing compound having an S=O bond and an S=O group-containing compound (excluding the anion-containing compound having an S=O bond) is additionally contained; and if (A1) is the content of a compound represented by general formula (I) on a mass basis, (A2) is the content of an anion-containing compound having an S=O bond on a mass basis, and (A3) is the content of an S=O group-containing compound on a mass basis, at least one of [(A1) / (A2) is 0.001 to 10], and [(A1) / (A3) is 0.001 to 1.5], is satisfied. Condition (B): In the formula, R1 is a branched alkyl group having 3 to 6 carbon atoms; and a carbon atom adjacent to a phosphorus atom is a secondary carbon atom or a tertiary carbon atom.