TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Composition: The particles are inorganic particles and/or organic particles. The inorganic particles contain silicon oxide, zinc oxide, tin oxide, magnesium oxide, An antimony oxide, aluminum oxide, magnesium sulfate, calcium sulfate, barium sulfate, strontium sulfate, magnesium carbonate, calcium carbonate, barium carbonate, lithium carbonate, magnesium hydroxide, aluminum hydroxide, zinc hydroxide, Boehmite, white carbon, zirconium oxide hydrate, magnesium oxide hydrate, magnesium hydroxide octahydrate, boron carbide, silicon nitride, boron nitride, aluminum nitride, titanium nitride, lithium fluoride, aluminum fluoride, calcium fluoride, barium fluoride, magnesium fluoride, trilithium phosphate, magnesium phosphate, hydrogen phosphate magnesium, ammonium polyphosphate, silicate mineral, carbonate mineral and/or oxide mineral. The silicate mineral is talc, calcium silicate, zinc silicate, zirconium silicate, aluminum silicate, magnesium silicate, kaolinite, sepiolite, imogolite, sericite, pyrophyllite, mica, zeolite, mullite, saponite, attapulgite and/or montmorillonite. The carbonate mineral is hydrotalcite and/or dolomite. The oxide mineral is spinel.    TECHNOLOGY FOCUS - POLYMERS - Preferred Composition: The organic particles are melamine, melamine cyanurate, melamine polyphosphate, crosslinked polymethyl methacrylate, polyethylene, polypropylene, polystyrene, polytetrafluoroethylene, polyvinylidene fluoride, polyamide, polyimide, melamine resin, phenol resin and/or epoxy resin. The high molecular compound is polyvinylidene fluoride, polytetrafluoroethylene, fluorinated vinylidene-tetrafluoroethylene copolymer, ethylene-tetrafluoroethylene copolymer, fluorinated vinylidene-tetrafluoroethylene copolymer, ethylene-tetrafluoroethylene copolymer, styrene-butadiene copolymer or its hydride, acrylonitrile-butadiene copolymer or its hydride, acrylonitrile-butadiene-styrene copolymer or its hydride, methacrylic acid ester-acrylic acid ester copolymer, styrene-acrylic acid ester copolymer, acrylonitrile-acrylic acid ester copolymer, ethylene propylene rubber, polyvinyl alcohol, polyvinyl acetate, ethyl cellulose, cellulose derivative, polyphenylene ether, polysulfone, polyether sulfone, polyphenylene sulfide, polyether imide, polyimide, polyamide, polyamidoimide, polyacrylonitrile, polyvinyl alcohol, polyether, acrylic acid resin, polyester and/or polyethylene glycol. Preferred Properties: The particles have D50 particle diameter, D40 particle diameter and D60 particle diameter of 50-450 nm or 750-10000 nm. The content of particles is 5.2-50 %mass with respect to total content of electrolyte. The content of high molecular compound and/or electrolytic salt is 5.6-30.8 %mass with respect to total content of electrolyte. The particles have shape of plate with thickness of 50-450 nm or needle with thickness of 50-450 nm. The electrolyte layer has thickness of 1-15 mu m.