Abstract: A dispersion, methods of making the same, applications of the dispersion to graphitic material and the resulting coated particles are disclosed. The dispersion includes ?55% wt. coal tar pitch (softening point 100° C.-195° C.), ?60% wt. dispersant, and the balance a non-aromatic solvent such as water or alcohol. Pitch particles in the dispersion are preferably <10 ?m with a distribution of D50<15 ?m. The pitch particles are micronized, such as by dry and/or wet milling with the dispersant and aqueous solvent to achieve the desired pitch particle size and distribution. This aqueous dispersion may be mixed with natural or synthetic graphitic material having a diameter of 5-20 ?m in a ratio of 5%-30% pitch to graphite, dried and carbonized to form coated particles having a graphitic core at least partially coated by pitch particles.

Abstract: An oxide composite positive electrode material coated with borate in situ, includes ?AxByOz—NaaLibNicCudMneMfO2+?. In the material, Li, Ni, Cu, Mn, and element M for doping and substituting a transition metal site together occupy the position of transition metal ions in the crystal structure. The space group of the layered oxide composite positive electrode material is P63/mmc or P63/mcm or R3m, or the corresponding structure is a P2 phase or an O3 phase. AxByOz is a coating layer that has a needle-like structure and is generated in situ on the surface of NaaLibNicCudMneMfO2+?, being formed by, during a sintering process, coating a material precursor and a layered oxide precursor for generating NaaLibNicCudMneMfO2+?; ? is the mass fraction of the coating material precursor in the layered oxide precursor, 0.1 wt %???10 wt %; and A is Li and/or Na.

Abstract: A cathode is disclosed. In some implementations, the cathode includes a current collector, a first cathode mixture layer on at least one surface of the current collector, and a second cathode mixture layer on the first cathode mixture layer. The first cathode mixture layer includes a first cathode active material having a layered crystal structure, and the second cathode mixture layer includes a second cathode active material having an olivine-based crystal structure. The first cathode mixture layer and the second cathode mixture layer have a thickness ratio of 1:9 to 4:6.

Abstract: An electrode film rolled web includes an adhesive layer, and a positive active material layer laminated on the adhesive layer, where the adhesive layer includes a particulate conductive material and a binder, the binder contains a first polyisobutylene that has a viscosity average molecular weight of 1,000,000 or more and a second polyisobutylene that has a viscosity average molecular weight of 10,000 or more and 100,000 or less, the conductive material is a carbon material, and the adhesive layer contains the conductive material in an amount of 15% by mass or more and 25% by mass or less, the first polyisobutylene in an amount of 25% by mass or more and 50% by mass or less, and the second polyisobutylene in an amount of 30% by mass or more and 60% by mass or less, based on 100% by mass in total of the conductive material and the binder.

Abstract: A secondary battery is provided and includes a positive electrode including a positive electrode active material layer, a negative electrode, and an electrolytic solution including an electrolyte salt. The positive electrode active material layer includes a plurality of positive electrode active material particles, and the positive electrode active material particles each include a central portion including a lithium composite oxide and a covering portion provided on a surface of the central portion. The lithium composite oxide has a crystal structure of a layered rock salt type and includes lithium, nickel, and other elements as constituent elements. The covering portion includes lithium, fluorine, boron, and oxygen as constituent elements. The electrolyte salt includes a fluorine-containing lithium salt.

Abstract: A positive electrode active material includes a lithium composite transition metal oxide in the form of a single particle composed of one single nodule and/or in the form of a pseudo-single particle, which is a composite of 30 or less nodules, and a coating layer formed on the surface of the lithium composite transition metal oxide particle. The coating layer contains aluminum (Al) and tungsten (W). The positive electrode active material satisfies Equation 1 below: 45?X×X??56??[Equation 1] wherein, X is the content of nickel among all metals except for lithium in the lithium composite transition metal oxide (unit: mol %), and X? is the BET specific surface area of the positive electrode active material (unit: m2/g).

Abstract: An electrochemical device includes a negative electrode plate. The negative electrode plate includes a negative current collector and a negative active material layer. The negative active material layer is located on the negative current collector. Along a thickness direction of the negative electrode plate, the negative active material layer includes a first layer and a second layer. The first layer is located between the negative current collector and the second layer. A porosity of the second layer is 5% to 20% higher than a porosity of the first layer. A thickness of the second layer is 5 ?m to 20 ?m.

Abstract: The non-aqueous electrolyte battery is excellent in high-temperature storage characteristics and load characteristics at low temperature. A non-aqueous electrolyte battery of the present invention includes a positive electrode, a negative electrode, a separator, and a non-aqueous electrolyte. The negative electrode includes a lithium layer, a lithium-aluminum alloy layer formed on a surface of the lithium layer, and a carbon layer on the lithium-aluminum alloy layer. The non-aqueous electrolyte battery of the present invention can be manufactured by a method for manufacturing a non-aqueous electrolyte battery that includes providing an aluminum layer on the surface of the lithium layer to obtain a laminate, forming the carbon layer on a surface of the aluminum layer to obtain a laminate for a negative electrode, and causing the lithium layer and the aluminum layer of the laminate for a negative electrode to react with each other to form the lithium-aluminum alloy layer.

Abstract: A negative electrode for a lithium metal secondary battery according to an embodiment of the present invention includes a negative electrode current collector, and a lithium-containing metal layer disposed on at least one surface of the negative electrode current collector, at least a part of a surface of the lithium-containing metal layer has an uneven shape, the surface has a developed area ratio Sdr of 1.0 or more, and the surface is coated with an antioxidant film.

Abstract: The present disclosure provides an anode material and a preparation method therefor, and a battery. The anode material includes a first silicon material layer, and a buffer layer, a second silicon material layer, and a coating layer, which are sequentially arranged on a surface of the first silicon material layer. The density of the first silicon material layer is less than the density of the second silicon material layer. The anode material of the present disclosure has controllable volume expansion, a stable electrolyte solution interface, and high reversible capacity.

Abstract: A cathode lithium-supplementing additive, a preparation method, and an application thereof are provided. The cathode lithium-supplementing additive includes: a lithium-containing core, and a coating layer formed on a surface of the lithium-containing core, in which, a material of the coating layer is selected from a conductive hydrophobic polymer having a surface modified with a hydrophobic enhancer. On the one hand, the formed coating layer can make up for the defect that the lithium-containing compound itself has poor electronic conductivity and can improve the electronic conductivity, in the meanwhile reduce the amount of conductive agent to be added to the electrode plate; and on the other hand, since the polymer has the surface modified with the hydrophobic enhancer, hydrophobic groups are provided, which further provides a hydrophobic barrier, so as to effectively improve the stability of the lithium-containing core in the air.

Abstract: A solid-state lithium-ion battery with long cycle life and ultrafast charging is disclosed. The exceptional cycle life is enabled by an ultra-stable lithium vanadium oxide-based anode material, disordered rock salt Li3V2O5. This anode material has a working potential of ˜0.6 V versus Li/Li+, a 3D Li-ion transport pathway, and linear expansion less than 2%. These properties enable rapid lithium transport, eliminate lithium metal plating, and deliver extremely long cycle life. Furthermore, the use of a solid electrolyte such as Li5.4PS4.4Cl1.6 provides high-rate capability and a wide operating temperature due to the absence of phase changes or concentration polarization in the electrode. The solid-state lithium-ion battery may be configured to provide over 5,000 cycles to 80% capacity, a 3-minute ultrafast charge time to 80% state of charge, an energy density exceeding 200 W·h/kg and 650 W·h/L, and a wide operating temperature range from ?80° C. to 350° C.

Abstract: A positive electrode active material for a lithium secondary battery, containing a lithium metal composite oxide and an Li—X compound containing Li and an element X, in which the Li—X compound is a lithium-ion conductive oxide, the lithium metal composite oxide contains secondary particles, which are aggregates of primary particles, the secondary particles have gaps among the primary particles, the Li—X compound is present at least in the gap, the element X is one or more elements selected from the group consisting of Nb, W, and Mo, and the positive electrode active material for the lithium secondary battery satisfies (A). 4.

Abstract: The present disclosure provides a positive electrode piece and a lithium-ion battery. The positive electrode piece includes: a positive electrode current collector, a first coating layer disposed on at least one surface of the positive electrode current collector, and a positive electrode active material layer disposed on a surface of the first coating layer, where the first coating layer contains a first material and a conductive agent, a particle diameter of the first material is ?800 nm, and a sheet resistance of the first coating layer is not less than 500 m?/?. The positive electrode piece provided by the present disclosure can improve the impedance of a contact short-circuit site between the positive electrode current collector and a negative electrode active material, and reduce the heat generated by the short circuit, thereby effectively reducing safety problems such as battery cell catching fire caused by the short circuit.

Abstract: A process for preparing a compound of formula (NaOH)x[Fe(OH)2]yFeS, may include: (a) mixing iron and sodium sulfide in equimolar amounts, in an NaOH aqueous solution; (b) heating the obtained mixture up to a temperature in a range of from 110 to 210° C. for a duration in a range of from 1 hour to 1 week; and (c) recovering the active material by filtering and drying in a neutral atmosphere.

Abstract: A nonaqueous electrolyte energy storage device according to one aspect of the present invention includes: a positive electrode including a lithium transition metal composite oxide containing a nickel element and a manganese element; and a negative electrode including solid graphite, the solid graphite has a porosity of 2% or less, and the content of the nickel element with respect to the transition metal element in the lithium transition metal composite oxide is 40 mol % or more.

Abstract: A lithium secondary battery includes a positive electrode including a first positive electrode active material and a second positive electrode active material and a negative electrode including a first negative electrode active material and a second negative electrode active material. The first positive electrode active material may have a higher specific capacity value than the second positive electrode active material, the first negative electrode active material may have a higher specific capacity value than the second negative electrode active material, and the lithium secondary battery may have an R value of 0.1 to 35 according to Equation 1 below. R ? = X / Y [ Equation ? 1 ] In Equation 1, X is a content ratio of a positive electrode active material and Y is a content ratio of a negative electrode active material.

Abstract: The present invention relates to a lithium composite oxide capable of improving capacity and lifetime characteristics of a lithium secondary battery and a lithium secondary battery including the same. According to the present invention, since the atomic ratio of boron (B) and nickel (Ni) in the surface region of the lithium composite oxide including primary particles enabling lithium intercalation and deintercalation and secondary particles formed by aggregating the primary particles is in a specific range, the stability of the lithium composite oxide may be improved, and thus it is possible to improve the capacity and lifetime characteristics of the lithium secondary battery using the lithium composite oxide as a positive electrode active material.

Abstract: A method of preparing a bimodal positive electrode active material precursor and a positive electrode active material prepared from the same are disclosed herein. In some embodiments, the method includes inputting a first reaction source material including a first aqueous transition metal solution into a reactor, precipitating at pH 12 or more to induce nucleation of a first positive electrode active material precursor particle, and at less than pH 12 to induce growth of the same, inputting a second reaction source material including a second aqueous transition metal solution into the reactor containing the first positive electrode active material precursor particle, precipitating at pH 12 or more to induce the nucleation of a second positive electrode active material precursor particle, and at less than pH 12 to induce simultaneous growth of the first and second positive electrode active material precursor particles, thereby preparing a bimodal positive electrode active material precursor.

Abstract: Disclosed herein is a porous substrate having silver and optionally silver oxide and a silver sulfide coating. Also disclosed herein is a battery having a cathode, an anode, and a separator between the cathode and the anode. The cathode includes a substrate having silver and optionally silver oxide and a silver sulfide coating. Also disclosed herein is a method of submerging a substrate having silver and optionally silver oxide in a solution of elemental sulfur in dimethyl sulfoxide to form silver sulfide on the surface of the substrate.

Abstract: The present application belongs to battery materials, and in particular, to a lithium-containing multi-phosphate cathode material and a preparation method therefor, and a secondary battery. The lithium-containing multi-phosphate cathode material includes a single-core multi-shell lithium manganese iron phosphate composite material, the composite material includes a core of lithium iron phosphate or lithium manganese iron phosphate, N lithium manganese iron phosphate coating layers coated on an outer surface of the core, and a carbon coating layer coated on an outermost layer of the composite material; N is an integer greater than or equal to 1; a manganese content in the N lithium manganese iron phosphate coating layers successively increases in a radially outward direction, and a particle size of the lithium manganese iron phosphate particles in the N lithium manganese iron phosphate coating layers successively decreases in the radially outward direction.

Abstract: Provided is a sodium-ion secondary battery having a high capacity and excellent safety. A sodium-ion secondary battery includes: a positive electrode containing a positive-electrode active material made of a crystallized glass containing crystals represented by a general formula NaxMyP2Oz (where 1?x?2.8, 0.95?y?1.6, 6.5?z?8, and M is at least one selected from among Fe, Ni, Co, Mn, and Cr); a negative electrode containing a negative-electrode active material made of hard carbon; and a non-aqueous electrolyte.

Abstract: An anode active material for a battery and a preparation method thereof, a battery anode, and a secondary battery. The anode active material for a battery includes anode active substance particles, where the anode active substance particles include silicon oxide compounds and lithium; in the X-ray diffraction using Cu-K? radiation, the anode active substance particles have a first diffraction peak in a range of 2?=18.78°±0.2° and a second diffraction peak in a range of 2?=47.4°±0.3°; and a full width at half maximum of the first diffraction peak is set as A, A is greater than 0.34°, a full width at half maximum of the second diffraction peak is set as B, and B/A?1.3. The anode active material for a battery has superior electrochemical properties, including high energy density and excellent kinetic performance when employed in batteries.

Abstract: A negative electrode for a lithium secondary battery and a lithium secondary battery including the same are provided. The negative electrode includes a negative electrode current collector, and a negative electrode mixture layer on at least one surface of the negative electrode current collector. The negative electrode mixture layer includes an negative electrode active material and carbon fiber, and the carbon fiber has an average cross-sectional diameter of 5 to 20 ?m.

Abstract: Provided are a negative active material, a negative electrode plate, a battery, a battery module, and an electric device. A particle size distribution A of the negative active material is (D90?D10)/D50. a defect degree B of the negative active material is ID/IG. A ratio of the particle size distribution A of the negative active material to the defect degree B of the negative active material is 6.0?A/B?7.2.

Abstract: A negative active material and a rechargeable lithium battery including the same, the negative active material including a core including a carbon material; and a carbon nitride on a surface of the core, and the rechargeable lithium battery including a negative electrode including the negative active material; a positive electrode; and an electrolyte.

Abstract: The present application provides a sodium-ion battery, a battery module, a battery pack, and an electrical device. The sodium-ion battery includes a positive electrode plate, a negative electrode plate, and a separator; the positive electrode plate includes a positive electrode current collector and a positive electrode active material layer arranged on at least one surface of the positive electrode current collector, the negative electrode plate includes a negative electrode current collector and a negative electrode active material layer arranged on at least one surface of the negative electrode current collector, and the separator is arranged between the positive electrode plate and the negative electrode plate; the positive electrode active material layer has a porosity denoted as ?, the negative electrode active material layer has a porosity denoted as ?, and the separator has a porosity denoted as ?, which satisfy 0?(???)/??1.5, and ???.

Abstract: An electrode active material, an electrode, an electrochemical device, a module, and a method, each utilizing a fluoride ion reaction to improve the charge-discharge cycle performance, are provided. The electrode active material includes a carbon material. During discharge, a metal fluoride is generated. During charge, a fluoride ion is desorbed from the metal fluoride and reacts with the carbon material to form a C—F bond.

Abstract: An electrochemical apparatus includes a negative electrode plate, where the negative electrode plate includes a negative electrode current collector, a first layer, and a second layer. The first layer is disposed between the negative electrode current collector and the second layer. The first layer and the second layer both include graphite, and a ratio of crystallinity of graphite in the second layer to crystallinity of graphite in the first layer is 0.4 to 0.8. Using graphite with higher crystallinity in the first layer can achieve a higher capacity, increasing the energy density of the electrochemical apparatus; and using graphite with lower crystallinity in the second layer can avoid the problem of lithium precipitation on the surface of the high crystallinity graphite of the first layer, improving the kinetic performance of the electrochemical apparatus.

Abstract: A modified electrode includes a conductive substrate and a crosslinked branched polymer disposed on at least a portion of a surface of the conductive substrate. The crosslinked branched polymer comprises a plurality of tertiary amino groups and a plurality of carboxylic acid groups, carbonyl groups, hydroxyl groups, or any combination thereof. The electrode is useful in a battery, such as a redox flow battery.

Abstract: An aspect of the present disclosure relates to an aqueous slurry composition for a positive electrode that can replace the existing positive electrode slurry composition using organic solvents and fluorine-based polymers. The aqueous slurry composition for a positive electrode contains an aqueous electrolyte containing a metal salt containing a kosmotropic anion and water, a positive electrode active material, and an aqueous polymer.

Abstract: A secondary battery is provided and including a positive electrode; a negative electrode; and an electrolyte, wherein the secondary battery is operable to be subject to a low-temperature cycle, followed by high-temperature storage or a room-temperature cycle, and on a surface of the negative electrode, a fluorine atom concentration is higher than an oxygen atom concentration based on X-ray photoelectron spectroscopy after the high-temperature storage or the room-temperature cycle, compared to after the low-temperature cycle.

Abstract: Provided herein are composite materials for use in electrical energy storage systems (e.g., high-capacity batteries) and methods for preparing the same. The composite materials of the present disclosure include a plurality of covalently functionalized silicon particles and a polymer network. Individual silicon particles within the plurality of silicon particles are dispersed throughout the polymer network. Covalently attached functional groups to a surface of the plurality of the silicon particles enable dispersion of the silicon particles throughout the polymer network.

Abstract: A secondary battery includes a positive electrode, a negative electrode, and an electrolytic solution. The positive electrode includes a positive electrode active material and a carbon-nitrogen-containing metal compound. The positive electrode active material includes sulfur. The carbon-nitrogen-containing metal compound includes carbon, nitrogen, and a metal element as constituent elements.

Abstract: An anode electrode comprises an anode current collector. An anode active material layer comprises anode active material comprising at least one of lithium silicon oxide, silicon oxide, lithium silicon oxide and graphite, and silicon oxide and graphite. The anode active material layer further comprises a binder comprising a mixture of styrene butadiene rubber (SBR), sodium carboxymethyl cellulose (NaCMC) and sodium polyacrylic acid (NaPAA), wherein SBR comprises greater than 60% wt of the binder.

Abstract: Provided is a binder composition for a non-aqueous secondary battery electrode with which it is possible to produce a slurry composition that has excellent viscosity stability and is capable of producing an electrode having excellent peel strength. The binder composition contains a particulate polymer and water. The particulate polymer includes an aromatic vinyl monomer unit, a conjugated diene monomer unit, and an acidic group-containing monomer unit, wherein an acidic group of the acidic group-containing monomer unit is at least partially in a form of a salt. The particulate polymer has an average particle diameter X according to cumulant method analysis as measured by dynamic light scattering of 140 nm to 300 nm. A particle diameter ratio X/Y calculated as a ratio of the average particle diameter X relative to a volume-average particle diameter Y of the particulate polymer measured by laser diffraction/scattering is 1.05 to 2.00.

Abstract: An electrode mixture layer-forming composition for a lithium-sulfur secondary battery, said composition contains a carboxyl group-containing polymer or a salt thereof serving as a binder, a carbon-sulfur composite in which sulfur is supported by pores of a porous carbon powder, a fibrous conducting aid, and water.

Abstract: A secondary battery is provided and includes a positive electrode, a negative electrode, and an electrolytic solution. The negative electrode includes a negative electrode active material layer containing a negative electrode binder and a coating film provided on a surface of the negative electrode active material layer, and the negative electrode binder contains a copolymer of acrylamide, lithium acrylate, and acrylonitrile. A C1s spectrum, an N1s spectrum, and an Li1s spectrum are detected by surface analysis of the negative electrode using X-ray photoelectron spectroscopy, a first concentration ratio as calculated by Equation (1) is 0.4 or more and 2.7 or less, and a second concentration ratio as calculated by Equation (2) is 3.4 or more and 5.9 or less.

Abstract: The present invention provides a nanoporous carbon composite (NCC) for use as an electrode material. NCC comprises active electrode material, one or more additives in a form of particles or fibers, and a nanoporous carbon phase that binds pieces of the active electrode material and pieces of the additive with each other. NCC further comprises micro-cracks distributed throughout the NCC to build a three-dimensional (3D) network, wherein the micro-crack is bounded in one or more parts by a surface of the active electrode material or the additive.

Abstract: A conductive pigment paste contains a pigment dispersion resin (A), a conductive pigment (B), a solvent (C), a fluororesin (D), and a high-polarity low-molecular weight component (E). The pigment dispersion resin (A) contains at least one polar functional group selected from the group consisting of an amide group, an imide group, a hydroxyl group, a carboxyl group, a sulfonate group, a phosphate group, a silanol group, a cyano group, and a pyrrolidone group. A concentration of the polar functional group in the pigment dispersion resin (A) is 0.3 mmol/g or greater and 23 mmol/g or less. The conductive pigment (B) contains carbon nanotubes (B1). The high-polarity low-molecular weight component (E) contains an amine compound (E1). The conductive pigment paste can be use for a mixture paste and a lithium ion battery electrode.

Abstract: The invention pertains to the use of porous, chemically interconnected, carbon nanofibres-comprising carbon networks as a conductive additive in lithium or sodium batteries. It has been found that said carbon-nanofibre comprising carbon networks can beneficially be used in the cathode of lithium or sodium batteries when added in an amount of 0.1-20 wt %, and/or in the anode of lithium or sodium batteries when added in an amount of 0.1-10 wt %. The benefits include a high lifetime (stability over extended cycling), high charge and discharge rate and being resilient during manufacture and use. The porous, chemically interconnected, carbon nanofibres-comprising carbon networks can be used as conductive additive in the anode and/or cathode of lithium or sodium batteries of many areas of technology, such as smartphones, laptops and electric and hybrid vehicles.

Abstract: A method for producing a battery cell may include forming a positive electrode and a negative electrode before interposing a separator therebetween. A disk of a non-lithium sacrificial material, such as zinc (Zn), may be secured to a case. A sheet of materials including the separator interposed between the positive electrode and the negative electrode may be inserted into the case, either wound into a jellyroll or left as is. In some cases, a negative tab extending from the negative electrode may be extended through an opening in the disk of non-lithium sacrificial material. The negative tab may then be welded to the disk and the case of the battery cell to provide an electrical connection between the negative electrode and the non-lithium sacrificial material as well as an electrical connection between the negative electrode and a negative terminal of the battery cell.

Abstract: Lithium metal anodes have a current collector foil laminated to a layer of lithium metal (or alloy) which has particulate materials at least partially embedded therein to reduce dendrite formation and thus improve the performance and cycle of the anode. The lithium anodes are conveniently produced using a roller press process.

Abstract: A method for manufacturing an electrode for a secondary battery comprises the steps of (a) preparing an electrode sheet comprising a current collector partitioned into a coating portion and a non-coating portion and having an insulating layer laminated on the non-coating portion; and (b) forming an electrode tab by notching the non-coating portion on which the insulating layer is laminated. The notching is performed using a laser having a pulse width of 100 ps to 10?6 ps. An electrode for a secondary battery and an electrode manufacturing system used in the method described above is also provided.

Abstract: A rechargeable battery electrode includes a substrate including a first pressurized region and a second pressurized region, and an active material layer on the substrate, the active material layer including a first portion on the first pressurized region and a second portion on the second pressurized region, and a thickness of the first portion being thicker than a thickness of the second portion.

Abstract: An electrode sheet, a battery cell, and a battery are provided. The electrode sheet includes an electrode sheet body. The electrode sheet body includes a first side edge and a second side edge connected. A connection position between the first side edge and the second side edge is provided with a first chamfer. The first chamfer includes a first arc segment and at least one first transition segment. The first arc segment is connected to the first side edge and/or the second side edge through the at least one first transition segment. The first arc segment protrudes toward a direction away from a center of the electrode sheet body.

Abstract: An assembly of lithium-based solid anodes to be formed into a lithium-ion battery. The anodes are formed with a fibrous ceramic or polymer framework having open spaces and an active surface material having lithiophilic properties. Open spaces within the fibrous framework and lithiophilic coatings deposited upon the surface of the fibrous framework allow for the free transport of solid lithium-ions within the anodes. In solid-state, lithium batteries can achieve higher capacity per weight, charge faster, and be more durable to extreme handling and temperature. A method for manufacturing a solid-state lithium battery having such an anode.

Abstract: The present disclosure relates to a secondary solid-state battery, with a current collector configuration that includes a metal foam sandwiched between two microporous carbon layers. The current collector directly interfaces with both the negative electrode and the solid electrolyte separator. Alternatively, the current collector can comprise an elastomer sandwiched between a pair of metal foil layers, enabling responsive expansion and contraction in accordance with the electrodes' changes during charge-discharge cycles. Another embodiment contemplates a carbon fiber paper current collector situated between two microporous layers.

Abstract: The invention relates to method for producing a gas diffusion layer (10) for a fuel cell (200), the method having the following steps: mixing (120) elongated, electrically and thermally conductive fibers, electrically and thermally conductive conductivity particles, a binder for bonding the fibers and the conductivity particles, by means of at least one solvent to form at least one gas diffusion layer mixture (100a, 100b), providing (140) a carrier body (30), arranging (160) at least one layer (104a, 104b) of the at least one gas diffusion layer mixture (100a, 100b) on an upper face (31) of the carrier body (30), removing (180) the solvent from the at least one gas diffusion layer mixture (100a, 100b) to produce the gas diffusion layer (10) on the upper face (31) of the carrier body (30).

Abstract: Disclosed is a nonaqueous liquid electrolyte including a solute, a nonaqueous solvent, an isocyanate component, and a phenol component. The nonaqueous liquid electrolyte is used in a power storage device.