203results about "Non-aqueous electrolyte accumulators" patented technology

The invention provides a preparation method of an SA / GO / metal ion functional coating diaphragm suitable for a chloride ion battery, which comprises the following steps: mixing SA (sodium alginate) and GO (graphene oxide) aqueous solution, grinding into gel, and uniformly coating the gel on the diaphragm; then, the diaphragm is sequentially put into an ethanol solution containing metal salt and absolute ethyl alcohol to be soaked; and finally, vacuum drying is performed to prepare the SA / GO / metal ion functional coating diaphragm. By introducing the sodium alginate, on one hand, the sodium alginate is crosslinked with the graphene oxide to construct a better network structure, so that an excellent effect can still be ensured while the dosage of the sodium alginate is reduced; on the other hand, carboxyl and hydroxyl on the sodium alginate can be cross-linked with multivalent metal ions to form a film layer capable of effectively preventing ions from passing through so as to prevent loss of active substances, and meanwhile, rich oxygen-containing functional groups can capture free multivalent metal ions. The synergistic effect finally greatly improves the discharge capacity and the cycle stability of the chloride ion battery.

A current collecting assembly, an energy storage apparatus, and an electric device. The current collecting assembly comprises a first connecting member and a second connecting member; the first connecting member comprises a first connecting portion, a second connecting portion, and a conducting portion; the conducting portion is provided with at least one first reinforcing rib and at least one second reinforcing rib, the first reinforcing rib protrudes out of a first surface of the conducting portion, and the second reinforcing rib protrudes out of a second surface of the conducting portion; the second connecting portion is mechanically connected to the surface of the second connecting member, and after the second connecting portion rotates, the second connecting member is located on the side of the second connecting portion facing away from the conducting portion.

The invention relates to a battery. In order to improve discharge performance, provided is a battery including a positive electrode, a negative electrode, and a separator, the negative electrode including a negative electrode current collector and a negative electrode active material layer, the negative electrode active material layer including a first region and a second region, the first region being disposed between the negative electrode current collector and the second region, and the second region being disposed between the first region and the second region. The density of the first region is greater than the density of the second region, the density of the second region is 1.3 g / cm3 or less, the mass per unit area of the negative electrode active material layer is 18 mg / cm2 or more, and the ratio of the mass per unit area of the second region to the mass per unit area of the negative electrode active material layer is 10% or more. The separator includes a first surface facing the positive electrode and a second surface facing the negative electrode, and a bonding layer is formed on the first surface and the second surface.

A secondary cell is provided. The secondary cell comprises a solid electrolyte to conduct oxygen ions, a positive electrode configured to be in contact with the solid electrolyte, and a negative electrode configured to be in contact with the solid electrolyte. The positive and the negative electrode comprise a mixed ionic and electronic structure for conducting oxygen ions and electrons. The mixed ionic and electronic structure comprises an ABO3 structure, wherein the A site corresponds to a first chemical element with a first covalent radius, wherein the B site corresponds to a second chemical element with a second covalent radius; and / or a CeMO2 structure, wherein the Ce is Cerium and M is a metal.

A negative electrode (12) according to an embodiment of the present invention comprises: a negative electrode core (40); and a negative electrode mixture layer (41) that is positioned on the negative electrode core (40), the negative electrode mixture layer (41) containing a negative electrode active material (50) and a water-soluble polymer (51). The water-soluble polymer (51) is present such that an amount of 0.50 mass % or more relative to the negative electrode active material (50) is adsorbed onto the negative electrode active material (50), and an amount of 1.05 mass % or less is separated from the negative electrode active material (50). The negative electrode active material (50) includes a carbon material and a silicon-containing material.

To provide a fluoride ion secondary battery capable of improving initial discharge capacity and capacity retention.SOLUTION: A fluoride ion secondary battery 10 includes: a positive electrode mixture layer 11a; and a positive electrode current collector layer 11b. The positive electrode current collector layer 11b has a modulus of elasticity of 1400 kgf / mm2 or less.SELECTED DRAWING: Figure 1

An active cathode material for a chloride-ion battery according to the present invention is a strontium ruthenium oxide with a layered perovskite structure. A process for producing an active cathode material according to the present invention comprises (a) preparing a raw material mixture by mixing strontium carbonate and ruthenium oxide, (b) pelletizing the raw material mixture into pellets, and (c) firing the pellets. A cathode composite material for a chloride-ion battery according to the present invention comprises the active cathode material according to the present invention. The chloride-ion battery according to the present invention comprises a layer of active cathode material, and the layer of active cathode material contains the cathode composite material according to the present invention.

The present invention relates to a polytetrafluoroethylene-based resin powder which is used as a binder for secondary batteries, and which has a degree of compression of 10-25% as determined by formula (1) and a uniformity of 4.5 or less as determined by formula (2).

Secondary battery, characterized in that it comprises an electrolyte solution and a positive electrode sheet, wherein the positive electrode sheet comprises a positive electrode active material, wherein the positive electrode active material comprises a core of lithium iron phosphate-based material and a carbon shell layer with which at least partially the outer surface of the core is coated, wherein in the Raman spectrum of the positive electrode active material the peak intensity at the wavenumber of 1360 ± 50 cm⁻¹ -1 as I d and the peak intensity at a wavenumber of 1580 ± 50 cm -1 as I g is, where the I d / I g The positive electrode active material has a value of 0.2 to 1.5, wherein the electrolyte solution comprises cyclic ester compounds that do not exceed 25% of the total mass of the solvent in the electrolyte solution.

This invention belongs to the field of batteries, specifically disclosing an alkali metal M-type electrodeless battery, its modified current collector, preparation method, and application. The preparation method of the modified current collector for the alkali metal M-type electrodeless battery is as follows: a precursor solution is composited on the surface of the current collector to be modified, followed by polymerization treatment to form a modified interface on the surface of the current collector, thus obtaining the modified current collector. The polymerization precursor solution includes ether monomers, modifiers, initiators, crosslinking agents, and alkali metal M salts. The modifiers include at least one of the structural formulas 1 () and 2 (). This invention innovatively uses modifiers of formulas 1 and 2 to participate in in-situ polymerization of the interface and modify the current collector. This can buffer the problem of high expansion of electrodeless current collectors. In addition, it can also solve the problems of poor initial efficiency, low rate capability, and especially unsatisfactory long-cycle stability at high rates in electrodeless batteries.

This invention discloses a secondary battery with a transfer electrode and an electrical device thereof. The secondary battery with the transfer electrode includes a positive electrode, a negative electrode body, a negative current collector layer, an extended negative current collector, and an electrolyte. The positive electrode and the negative electrode body are in contact with the electrolyte. The positive electrode, the negative electrode body, and the extended negative current collector are spaced apart. The extended negative current collector is positioned above the positive electrode. The distance between the positive electrode and the negative electrode body is greater than the distance between the positive electrode and the extended negative current collector. The negative electrode body is electrically connected to the negative current collector layer, and the negative current collector layer is used to electrically connect to the extended negative current collector. The secondary battery with the transfer electrode disclosed in this invention can solve the technical problem that existing flexible batteries are prone to forming metal dendrites during charging and discharging, which can cause short circuits and other faults, severely reducing battery life and posing safety hazards.

The present invention relates to the field of lithium battery raw material preparation technologies, in particular to a production apparatus for hydrothermal synthesis of lithium iron phosphate. The production apparatus comprises first stirring devices, a preheating device, a second stirring device, and a drying device, wherein there are two first stirring devices, and the preheating device comprises a housing, a heating box, two feeding pumps, two first transfer assemblies, and several first heating tubes; the two first transfer assemblies each comprise an inlet pipe, an outlet pipe, and several transfer branch tubes. In the present application, the arrangement of multiple transfer branch tubes increases the heated surface area of the slurry, enhances the thermal conduction efficiency, and improves the heating effect. The equidistant arrangement of the transfer branch tubes ensures uniform heating of the slurry within the multiple transfer branch tubes, guaranteeing the heating effect. The arrangement of the preheating device can reduce the heating time of the slurry, thereby enhancing the heating effect

The invention provides a benzo [b] phenazine-1, 2, 3, 4, 6, 11-hexanone derivative and a preparation method and application thereof.The benzo [b] phenazine-1, 2, 3, 4, 6, 11-hexanone derivative is of an asymmetric multi-carbonyl quinone phenazine structure, contains a plurality of oxidation-reduction active sites and can show excellent oxidation-reduction performance, molecules of the benzo [b] phenazine-1, 2, 3, 4, 6, 11-hexanone derivative are of a conjugated structure, hydrogen bonds exist between the molecules, and the structure of the benzo [b] phenazine-1, 2, 3, 4, 6, 11-hexanone derivative can be used for preparing the benzo [b] phenazine-1, 2, 3, 4, 6, 11-hexanone derivative. And the material is difficult to dissolve in an electrolyte, and has stable electrochemical performance in an ion battery. The preparation method of the benzo [b] phenazine-1, 2, 3, 4, 6, 11-hexanone derivative comprises the following steps: carrying out condensation reaction on a 2, 3-diaminonaphthalene-1, 4-diketone derivative and 2, 3, 5, 6-tetrahydroxy-1, 4-benzoquinone to obtain an intermediate; and then oxidizing the intermediate to obtain the benzo [b] phenazine-1, 2, 3, 4, 6, 11-hexanone derivative disclosed by the invention.

The application relates to the technical field of secondary batteries, in particular to an electrolyte and a secondary battery. The electrolyte comprises an additive; the additive comprises a first additive and a second additive; the first additive comprises a pinacol borate compound; and the second additive comprises a fluoroborate compound. The pinacol borate compound and the fluoroborate compound are used in the electrolyte; the ring-opening polymerization of the pinacol borate compound and the branched structure of the fluoroborate compound can both promote the construction of a crosslinked network structure in the organic components of SEI and CEI, are beneficial to the improvement of the mechanical properties of the electrode / electrolyte interface, inhibit the interface damage caused by the volume expansion of the electrode or the side reaction, and improve the interface structure stability.

A cathode active material for a chloride-ion battery according to the present disclosure is a strontium ruthenium oxide having a layered perovskite structure. A method for producing a cathode active material according to the present disclosure includes (a) preparing a raw material mixture by mixing strontium carbonate and ruthenium oxide, (b) pelletizing the raw material mixture into pellets, and (c) firing the pellets. A cathode composite material for a chloride-ion battery according to the present disclosure includes the cathode active material according to the present disclosure. The chloride-ion battery according to the present disclosure includes a cathode active material layer, and also the cathode active material layer contains the cathode composite material according to the present disclosure.

An electrode sheet and a manufacturing method therefor, a battery cell, a battery and an electrical apparatus, belonging to the technical field of batteries. The electrode sheet includes a current collector, a first insulating layer and a second insulating layer, where the current collector includes a main body part and tabs, the tabs extend from the first end of the main body part, and the first end is one end of the main body part in a first direction. Each tab includes a first portion and a second portion, the first portion being close to the main body part with respect to the second portion, the surfaces of the two sides of the first portion are respectively provided with the first insulating layer and the second insulating layer, and the thickness d2 of the second insulating layer being greater than the thickness d1 of the first insulating layer. The electrode sheet helps to improve the reliability of battery cells.

The application provides a composite current collector, a secondary battery and a power consumption device. The composite current collector comprises an organic layer and a metal layer arranged on at least one surface of the organic layer; the metal layer has pores, at least part of the pores has a pore size of 10 nm to 200 nm, and the porosity of the metal layer is 3% to 20%; the composite current collector satisfies the following relationship: 0.5*σ1*T 有 / (T 有 +T 金 )≤σ s ≤0.8*σ1*T 有 / (T 有 +T 金 ); wherein σ1 is the breaking strength of the organic layer, in MPa; T 有 is the thickness of the organic layer, in μm; T 金 is the total thickness of the metal layer, in μm; and σ s is the yield strength of the composite current collector, in MPa. The composite current collector can improve the rate performance and stability of the secondary battery.

A current collecting assembly, an energy storage apparatus, and an electric device. The current collecting assembly comprises a first connecting member and a second connecting member; the first connecting member comprises a first connecting portion, a second connecting portion, and a conducting portion; the conducting portion is provided with at least one first reinforcing rib and at least one second reinforcing rib, the first reinforcing rib protrudes out of a first surface of the conducting portion, and the second reinforcing rib protrudes out of a second surface of the conducting portion; the second connecting portion is mechanically connected to the surface of the second connecting member, and after the second connecting portion rotates, the second connecting member is located on the side of the second connecting portion facing away from the conducting portion.

A polyolefin microporous membrane is provided, which has a film thickness of 1 to 30 μm and a gas permeability of 500 sec / 100 cm 3 Hereinafter, and under conditions of a temperature of 70°C, a pressure of 8 MPa, and a compression time of 3 minutes, the post-compression porosity measured in a compression test is 30% or more.

Provided is a polyolefin microporous film having a film thickness of 1-30 [mu] m, an air permeability of 500 sec / 100 cm3 or less, and a post-compression porosity of 30% or more as measured in a compression test under conditions of a temperature of 70 DEG C, a pressure of 8 MPa, and a compression time of 3 minutes.

The invention provides a sodium ion secondary battery, the sodium ion secondary battery comprises a positive pole piece, the positive pole piece comprises a positive current collector and a positive film layer arranged on the positive current collector, the positive film layer comprises a positive active material and a binder, the binder comprises a copolymer, and the positive active material comprises a negative active material. The copolymer contains a first structural unit shown in a formula I and a second structural unit shown in a formula II, R11, R12, R13, R14, R21, R22 and R23 are independently selected from hydrogen and unsubstituted or substituted C1-3 alkyl, and a substituent group in the substituted C1-3 alkyl is selected from at least one of an ester group, carboxyl salt, anhydride, hydroxyl, acylamino and carboxyl; r24 is selected from hydrogen, inorganic cations and unsubstituted or substituted C1-3 alkyl groups, and substituent groups in the substituted C1-3 alkyl groups are selected from at least one of ester groups, carboxyl salts, acid anhydrides, hydroxyl groups, acylamino groups and carboxyl groups.

The invention provides a diaphragm binder composition, a diaphragm binder, a diaphragm and a battery. The diaphragm binder composition comprises a granular polymer A and a granular polymer B, the glass transition temperature of the granular polymer A is not higher than 30 DEG C; the D50 particle size of the granular polymer B is larger than the D90 particle size of the granular polymer A; wherein the granular polymer B is a polyvinylidene fluoride polymer or a fluorine-free polymer, and when the granular polymer B is the fluorine-free polymer, the glass transition temperature of the granular polymer B is not lower than 50 DEG C. The diaphragm obtained by using the diaphragm binder composition can realize better bonding force by pressurizing at normal temperature, has a room-temperature bonding function, can reduce energy consumption and save cost, and the diaphragm bonded at room temperature does not generate self-adhesion after being rolled. The binder used by the diaphragm is not easy to form a film at high temperature, and the battery prepared by adopting the diaphragm has excellent high-temperature cycle performance.

The present disclosure provides a novel positive electrode active material for a chloride ion battery, a method for manufacturing the same, a positive electrode mixture for a chloride ion battery comprising such a positive electrode active material, and a chloride ion battery comprising such a positive electrode mixture. The positive electrode active material for a chloride ion battery according to the present disclosure is strontium ruthenium oxide having a layered perovskite structure. A method for producing a positive electrode active material for a chloride ion battery according to the present disclosure comprises the steps of: (a) preparing a raw material mixture by mixing strontium carbonate and ruthenium oxide; (b) granulating the raw material mixture to form granules; and (c) firing the particles. The positive electrode mixture for a chloride ion battery according to the present disclosure contains the positive electrode active material for a chloride ion battery according to the present disclosure. The chloride ion battery of the present disclosure has a positive electrode active material layer, and the positive electrode active material layer contains the positive electrode mixture for the chloride ion battery of the present disclosure.

The application provides a preparation method and application of a hydrotalcite / MXene positive electrode material of a chlorine ion battery; the hydrotalcite is first obtained by intercalating nitrate; the hydrotalcite dispersion solution is obtained by delaminating the hydrotalcite in a formamide solution; then MXene is added into the formamide to obtain an MXene dispersion solution; finally, the two dispersion solutions are dropped into a high-concentration sodium chloride solution to react, and the hydrotalcite / MXene superlattice heterostructure with high-order arrangement characteristics and intercalated chlorine anions is obtained as the positive electrode material of the chlorine ion battery based on the delamination strategy from top to bottom, the charge density difference is used to drive the colloidal co-assembly technology, the hydrotalcite / MXene superlattice heterostructure has high-order arrangement characteristics in the ab plane and the like, and the material has the advantages of high chlorine storage capacity, excellent rate characteristics, long cycle life and the like.

The invention belongs to the field of materials, and relates to an amorphous high-entropy fluorine ion solid electrolyte material and a preparation method and application thereof. The chemical formula of the amorphous high-entropy fluorine ion solid electrolyte material is AM < x > EM < y > RM < z > F < x + 2y + 3z >, wherein AM is a alkali metal elements with different compositions, EM is b alkaline earth metal elements with different compositions, and RM is c rare earth metal elements with different compositions; 0 < = a < = 5, 0 < = b < = 5, 0 < = c < = 5, a + b + c = N and N > = 5; x is equal to a / N, y is equal to b / N, z is equal to c / N, and subscripts corresponding to the AM, EM and RM are all 1 / N.

This disclosure provides a fluoride ion conductor with high ionic conductivity, and a fluoride ion battery containing such a fluoride ion conductor. [Solution] The fluoride ion conductor of this disclosure is represented by the following compositional formula (1): A 1-x AE x M2F 7+x … (1) (In formula (1) above, A = Na, K, Rb, Cs, or a combination thereof; AE = Ca, Sr, Ba, or a combination thereof; M = Sc, Y, Ln (Ln is a lanthanide element), Al, Ga, In, or a combination thereof; and 0

The invention relates to an oxygen ion battery, comprising a solid-state electrolyte (6) which is suitable for conducting oxygen ions, a first electrode (4,4') which is configured as a positive electrode and is in contact with a part of the surface of the solid-state electrolyte (6), a second electrode (5,5') which is configured as a negative electrode and is in contact with a part of the surface of the solid-state electrolyte (6), wherein the positive and negative electrode have a distance from each other such that an electron-conducting or physical contact between the positive and negative electrode is avoided, an insulation layer which partially surrounds the positive electrode and negative electrode and preferably insulates same from the gas atmosphere, characterised in that the insulation layer preferably consists of a cover layer (1) and a metal substrate (12, 12') and that the oxygen ion battery has at least a third electrode, which is configured as a measuring or control electrode (10, 11) and is in contact with a part of the surface of the solid-state electrolyte (6).

The present disclosure relates to a cell assembly having varied coating thicknesses and a method for its preparation. The cell assembly of the present disclosure serves the purpose of corrosion resistance, enables the welding joint effectively, improves the quality by enabling the hardness, and reduces the overall cost of the cell.

An electrolyte, a battery, an energy storage device, and an energy storage system. The electrolyte of the present application comprises a lithium salt and an additive, wherein the structural formula of the additive is: formula I, wherein R1 is one of hydrogen, an alkyl group containing 1 to 5 carbon atoms, a trifluoromethyl group, an acyl group, and an alkylsilyl group; R2 is one of hydrogen, an alkyl group containing 1 to 5 carbon atoms, a trifluoromethyl group, an acyl group, and an alkylsilyl group; and R3 is one of hydrogen, an alkyl group containing 1 to 5 carbon atoms, a trifluoromethyl group, an acyl group, and an alkylsilyl group.

The present application provides a secondary battery and an electrical apparatus. The secondary battery includes a battery case having an accommodating cavity, a cell assembly disposed in the accommodating cavity, and an electrolyte. The electrolyte contains a chain carboxylate compound, where based on the total mass of the electrolyte, a mass percentage W of the chain carboxylate compound satisfies: 0.03≤W / R≤7. The secondary battery has excellent fast charge performance and long service life.