390results about "Non-aqueous electrolyte accumulators" patented technology

The invention provides a preparation method and application of a petroleum asphalt-based porous carbon material, and belongs to the technical field of porous carbon materials. The preparation method comprises the following steps: by taking petroleum asphalt as a carbon precursor, stirring and pre-oxidizing the petroleum asphalt and molten salt at a certain temperature, then pre-carbonizing, washing away the molten salt, and carbonizing with KOH to prepare the petroleum asphalt-based porous carbon material. The petroleum asphalt with low carbon yield (11%) is converted into the petroleum asphalt-based porous carbon material with obviously improved carbon yield (up to 30%) through an efficient and convenient method. When the petroleum asphalt-based porous carbon material prepared by the method provided by the invention is used as an electrode material of a lithium ion battery / zinc ion capacitor, the petroleum asphalt-based porous carbon material shows excellent electrochemical performance.

The embodiment of the invention provides a sodium battery positive electrode material as well as a preparation method, a precursor and application thereof. The sodium battery positive electrode material comprises a sodium-based metal oxide, an X-ray diffraction spectrum of the material comprises diffraction peaks of the following 12 crystal faces: (003), (006), (101), (012), (104), (107), (018), (110), (113), (1010), (116) and (024), and the ratio of the peak area of the diffraction peak of the crystal face (003) to the sum of the peak areas of the diffraction peaks of the 12 crystal faces is less than 25%. The positive electrode material meeting the conditions is high in particle sphericity degree and relatively round and full in structure, so that the material is relatively high in compaction density and relatively good in dynamic performance, and the energy density and the rate capability of the sodium battery are conveniently improved.

An electrolyte for sodium ion batteries can comprise a salt comprising one or more of sodium bis (fluoro sulfonyl) imide (NaFSI) salt, NaOTf, NaTFSI, NaBF4, NaPFe, and NaCICh, and an electrolyte solvent comprising at least one carboxylate ester as a dominant solvent. A sodium ion battery cell (100) can comprise the electrolyte (140) having a salt comprising one or more of NaFSI salt, NaOTf, NaTFSI, NaBF4, NaPFe, and NaC104, and an electrolyte solvent comprising at least one carboxylate ester as a dominant solvent. The battery cell (100) can also include an anode (130) in electrical contact with the electrolyte (140) and a cathode (150) in electrical contact with the electrolyte (140). A casing (120) can enclose the electrolyte (140), the anode (130), and the cathode (150) sufficient to prevent oxygen and moisture from entering the casing (120).

A battery (1100), a battery cell (10), and an electric device. The battery comprises a battery unit (1) and a sampling assembly (2). The battery unit (1) comprises a plurality of columns of battery cells (10) arranged in a first direction, and each column of battery cells (10) comprises a plurality of battery cells (10) arranged in a second direction. Each battery cell (10) is provided with a pressure relief mechanism (12), electrode terminals (13), and a first side wall (1111) in a third direction, and the electrode terminals (13) comprise a first electrode terminal (131) and a second electrode terminal (132) having different polarities. The first electrode terminal (131), the second electrode terminal (132), and the pressure relief mechanism (12) are arranged at intervals on the first side wall (1111) in the first direction, and the second electrode terminal (132) is located between the first electrode terminal (131) and the pressure relief mechanism (12); or the first electrode terminal (131) and the second electrode terminal (132) are spaced apart from each other on the first side wall (1111) in the first direction, and the pressure relief mechanism (12) is arranged on another side wall of the battery cell (10), wherein the first direction intersects with the second direction, and a third direction is perpendicular to the first direction and the second direction. The sampling assembly (2) comprises electrical connection members (21) and sampling members (22) used for being electrically connected to the electrical connection members (21), the electrode terminals (13) of two adjacent battery cells (10) are connected by means of the electrical connection members (21), and a sampling member (22) is provided between the electrode terminals (13) of every two adjacent columns of battery cells (10).

Novel electrolyte compositions for lithium ion energy storage devices with silicon-based electrode materials have improved stability. The electrolyte composition may be used in an energy storage device that includes a first electrode and a second electrode, where at least one of the first electrode and the second electrode is a silicon-based electrode; a separator between the first electrode and the second electrode; and the electrolyte composition.

The purpose of the present disclosure is to provide: a composition for a fluoride-ion solid-state battery capable of improving battery capacity; and a fluoride-ion solid-state battery in which the same is used. The present disclosure is a composition for a fluoride-ion solid-state battery, said composition containing: a fluoride-ion conductive solid electrolyte and / or an active material for a fluoride-ion solid-state battery; and a fluoropolyether compound and / or a silicone compound.

The invention provides a diaphragm, a battery and an electric device, and aims to solve the technical problem that ion transmission on the diaphragm is easily blocked. The separator comprises: a base film; the metal organic framework layer is arranged on the base film, and the metal organic framework layer comprises a metal organic framework compound modified with dissociable groups. The metal-organic framework layer is further compounded on the basis of the base membrane, the metal-organic framework layer contains the metal-organic framework compound, and the metal-organic framework compound is a porous material and has the characteristics of high specific surface area and high porosity, so that the diaphragm is favorably infiltrated by electrolyte, and further, the performance of the diaphragm is improved. The metal organic framework compound is modified with the dissociable group, the dissociable group is easy to repel anions in the electrolyte, meanwhile, ion migration in the electrolyte is promoted through the ion-dipole effect, and the problem that ion transmission in the diaphragm is easy to block is solved, so that the internal resistance of the battery can be reduced, the cycle life of the battery is prolonged, and the rate capability of the battery is improved.

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.

The invention relates to the technical field of secondary batteries, in particular to an amphiphilic polymer as well as a preparation method and application thereof, and the amphiphilic polymer comprises a structure as shown in a formula (I) and / or a formula (II): # imgabs 0 # formula (I) and # imgabs 1 # formula (II). The amphiphilic polymer provided by the invention captures hydrogen fluoride (HF) under the action of electrostatic adsorption, hydrogen bonds and weak electrons in an acid environment, and realizes metal ion capture by virtue of coordination chelation of nitrogen atoms of a triazole ring and auxiliary enrichment and wrapping of a polyether chain in an alkaline environment, so that corrosion of internal materials of a battery is effectively prevented, and the service life of the battery is prolonged. The performance and the service life of the battery are improved.

An energy storage device according to an aspect of the present invention includes an electrode assembly in which a positive electrode including a positive active material layer and a negative electrode including a negative active material layer are stacked with each other with a separator interposed therebetween, in which the positive active material layer contains a positive active material particle, and the positive active material particle has an internal porosity of 15% or less, and the negative active material layer contains a graphite particle, and the graphite particle has an internal porosity of 2% or less.

Disclosed or provided are high melt temperature microporous Lithium-ion rechargeable battery separators, shutdown high melt temperature battery separators, battery separators, membranes, composites, and the like that preferably prevent contact between the anode and cathode when the battery is maintained at elevated temperatures for a period of time, methods of making, testing and / or using such separators, membranes, composites, and the like, and / or batteries, Lithium-ion rechargeable batteries, and the like including one or more such separators, membranes, composites, and the like.

The embodiment of the present invention relates to a method, material and application for improving the air stability of sodium ion layered oxide. The method for improving the air stability of sodium ion layered oxide positive electrode material comprises: regulating the air stability of copper-based sodium ion layered oxide positive electrode material Na x Cu y M z The weighted average ionic potential Φ of O2 ions except sodium ions M And adjust the crystal primary particle size r, so that 47.5 nanometers ‑1 ≤Φ M ≤50.5 nm ‑1 , and 1.4 microns ≤ r ≤ 100 microns, thereby reducing the amount of sodium loss after the sodium ion layered oxide positive electrode material deteriorates in the air, and obtaining a class of air-stable sodium ion battery layered oxide positive electrode materials; wherein M is selected from Ni 2+ 、Zn 2+ Mg 2+ 、Fe 3+ 、La 3+ 、Lu 3+ 、Sb 3+ 、Mn 4+ 、Ti 4+ 、Zr 4+ 、Sn 4+ 、Bi 5+ One or more of; 0.9≤x≤1, and y+z=1.

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.

An end cover assembly, an energy-storage apparatus, and an electricity-consumption device are provided. The end cover assembly includes an upper cover, a lower plastic member, a first terminal-post, and a first pressing ring. The upper cover includes a first protrusion and defines a first mounting recess. The lower plastic member defines a first accommodating recess. The lower plastic member is stacked with and connected to the upper cover. At least a part of the first accommodating recess is positioned in the first mounting recess. The first terminal-post passes through the upper cover and the lower plastic member. The first pressing ring is sleeved on the first terminal-post and fixedly connected to the first terminal-post. At least a part of the first pressing ring is positioned in the first accommodating recess and fixed connected to a recess wall of the first accommodating recess.

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.

The invention relates to a method for producing an anode of an alkali-ion battery, comprising: - providing a preferably molecularly dispersed fullerene Cx, where x is a number between 20 and 100 and the fullerene Cx is dissolved in a solvent or is present as a molecular beam comprising evaporated fullerene molecules; - providing an electrically conductive substrate; and - coating at least one surface of the electrically conductive substrate with the molecularly dispersed fullerene Cx. The invention also relates to a battery anode material comprising a fullerene Cx which is designed to reversibly bind at least one of the cations Na+, Li+, K+ and Cs+.

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

Provided is a fluoride ion secondary battery having a capacity larger than that of a conventional one. The fluoride ion secondary battery has a negative electrode including zirconium fluoride as a negative electrode active material. The zirconium fluoride may be in the form of particles with an average particle size of 100 nm or less, and the negative electrode may have a zirconium fluoride content of less than 50 % by mass. The negative electrode active material may further include metallic zirconium, which may be in the form of particles with an average particle size of 75 μm or less. The negative electrode may have a metallic zirconium content of 8% by mass or less.

The battery roll core structure comprises a positive pole piece, a negative pole piece, an inner diaphragm and an outer diaphragm, the outer diaphragm, the negative pole piece, the inner diaphragm and the positive pole piece are sequentially stacked and then curled into a battery roll core, and the negative pole piece and the positive pole piece are respectively stacked in wrapping areas of the outer diaphragm and the inner diaphragm when the battery roll core is curled. According to the battery roll core, only the outer diaphragm and the inner diaphragm are widened to wrap the wrapping areas of the negative plate and the positive plate, so that the negative plate and the positive plate can be completely separated by the outer diaphragm and the inner diaphragm, short circuit caused by direct contact of the two plates is prevented, the volume of the battery roll core is not increased, the content of electrolyte in the battery is increased, and the service life of the battery is prolonged. And the capacity of the battery with the same volume is higher.

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).

The utility model relates to the field of batteries, and discloses a battery monomer, a battery device and a power utilization device, the battery monomer comprises: a housing part, which comprises a first wall provided with a mounting hole; an electrode member housed in the case member; the pole component is mounted at the mounting hole and comprises a pole body, a connecting component and a first insulating part, the pole body is connected with the electrode component, and the connecting component is connected with the first wall and is in insulated connection fit with the pole body through the first insulating part; wherein the connecting component comprises a vertical arm, the vertical arm extends in the direction away from the first wall, and the projection of the vertical arm on the first wall at least partially overlaps the projection of the pole body on the first wall in the thickness direction of the first wall. The pole component disclosed by the utility model has relatively high structural strength, the probability of shaking, deformation or displacement when the pole body is matched with the connecting component is reduced, the mounting stability of the pole body is improved, the reliability of the pole component is improved, and the reliability of the single battery is further improved.

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.