▎ 摘　　要

NOVELTY - An electrode assembly comprises anode(s), cathode(s), and separator(s) interposed between the anode and cathode. The anode comprises an anode current collector and an anode electrode layer comprising an anode material and a binder material. The cathode comprises a cathode current collector and a cathode electrode layer comprising a cathode material and a binder material. The cathode and anode electrode layers have a void volume of 10-35%. The separator is made of polymeric fibers e.g. polyamide, polyimide, and/or polyetherether ketone. The cathode layer and anode layers further comprise only one conductive agent chosen from carbon, carbon black, graphite, expanded graphite, graphene, graphene nanoplatelets, carbon fibers, carbon nano-fibers, graphitized carbon flakes, carbon tubes, carbon nanotubes, activated carbon and mesoporous carbon, and have a density of 1-6.5 g/cm^3. The binder materials are e.g. styrene-butadiene rubber, polyimide and/or chlorinated polymer. USE - Electrode assembly is used for lithium-ion battery (claimed). Uses include but are not limited to cellular phone, laptop computer, electric vehicle, and grid energy storage. ADVANTAGE - The electrode assembly has excellent electrode electroconductivity and reduces water content in the battery. Since a roll electrode assembly is tightly packed, there is little or no void space between the electrode layer and separator layer, thus reducing airflow and drying efficiency. DETAILED DESCRIPTION - An electrode assembly comprises at least one anode, at least one cathode, and at least one separator interposed between the anode and cathode. The anode comprises an anode current collector and an anode electrode layer comprising an anode material and a binder material. The cathode comprises a cathode current collector and a cathode electrode layer comprising a cathode material and a binder material. The cathode and anode electrode layers have a void volume of 10-35%. The content of binder materials is at least 3 wt.%. The separator is made of at least one polymeric fibers chosen from polyamide, polycarbonate, polyimide, polyetherether ketone, polysulfones, polyphenylene oxide, polyphenylene sulfide, polyacrylonitrile, polyvinyl pyrrolidone, polyester, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalene, and polybutylene naphthalate. The cathode layer and anode layers further comprise only one conductive agent chosen from carbon, carbon black, graphite, expanded graphite, graphene, graphene nanoplatelets, carbon fibers, carbon nano-fibers, graphitized carbon flakes, carbon tubes, carbon nanotubes, activated carbon and mesoporous carbon, and have a density of 1-6.5 g/cm3. The binder materials are at least one chosen from styrene-butadiene rubber, acrylated styrene-butadiene rubber, acrylonitrile copolymer, acrylonitrile-butadiene rubber, nitrile butadiene rubber, acrylonitrile-styrene-butadiene copolymer, acryl rubber, butyl rubber, fluororubber, polytetrafluoroethylene, polyethylene, polypropylene, ethylene/propylene copolymers, polybutadiene, polyethylene oxide, chlorosulfonated polyethylene, polyvinylpyrrolidone, polyvinylpyridine, polyvinyl alcohol, polyvinyl acetate, polyepichlorohydrin, polyphosphazene, polyacrylonitrile, polystyrene, latex, acrylic resin, phenolic resin, epoxy resin, carboxymethyl cellulose, hydroxypropyl cellulose, cellulose acetate, cellulose acetate butyrate, cellulose acetate propionate, cyanoethylcellulose, cyanoethylsucrose, polyester, polyamide, polyether, polyimide, polycarboxylate, polycarboxylic acid, polyacrylic acid, polyacrylate, polymethacrylic acid, polymethacrylate, polyacrylamide, polyurethane, fluorinated polymer, chlorinated polymer, salt of alginic acid, polyvinylidene fluoride, and poly(vinylidene fluoride)-hexafluoropropene.