TECHNOLOGY FOCUS - CERAMICS AND GLASS - Preferred Component: The resin frame contains glass fiber.    TECHNOLOGY FOCUS - ELECTRICAL POWER AND ENERGY - Preferred Property: The resin frame and resin layer of the exterior material are heat-fused.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Absorber: The water-absorption layer contains absorbers chosen from sodium sulfate, magnesium sulfate, calcium sulfate, copper sulfate, magnesium oxide, calcium oxide, aluminum oxide, silicon oxide, calcium chloride, aluminum oxide, silicon oxide, calcium chloride, magnesium chloride, sodium nitrate, calcium hydroxide, magnesium perchlorate, zeolite, diphosphorus pentaoxide, and calcium carbonate. The content of absorber in the layer is 0.1-75 wt.%, preferably 5-75 wt.%. Preferred Film: The outer and/or inner wall of the resin frame consists of aluminum vapor-deposition film, carbon coating film, silicon-oxide vapor-deposition film, aluminum oxide vapor-deposition film, and/or phyllosilicate film.    TECHNOLOGY FOCUS - METALLURGY - Preferred Metals: The metal layer consists of hard metal chosen from aluminum, stainless steel, titanium, copper, tin, zinc, and nickel. The thickness of the hard metal is 50-100 microns. The hard aluminum is 3003H18, 3004H18, 1N30H18, and/or No. 5000 group. The stainless steel is austenite.    TECHNOLOGY FOCUS - POLYMERS - Preferred Absorber: The absorber is polyacrylate of formula: (-CH2-CH(COOM)-)n, where M is sodium, potassium, magnesium and/or calcium. Preferred Components: The resin frame contains polyethylene, polypropylene, ethylene vinyl acetate copolymer, ethylene vinyl acetate alcohol copolymer, ethylene acrylic acid copolymer, ethylene ethylacrylate copolymer, ethylene methyl acrylate copolymer, ethylene methacrylic acid copolymer, ethylene methyl methacrylic acid copolymer, ionomer, polyacrylonitrile, polyvinylidene chloride, PTFE, polychloro trifluoroethylene resin, polyphenylene ether, polyethylene terephthalate hot-melt agent, and/or polyamide hot-melt agent. The outer and/or inner wall of the resin frame consists of polyvinylidene chloride coating membrane. The resins of the resin frame and resin layer of the exterior material have the same molecular structure. The portion which opposes the joint surface of the electrode terminal is covered by resin material chosen from maleic acid anhydride modified polyethylene, maleic acid anhydride modified polypropylene, polyethylene added with titanate group coupling agent, polypropylene added with titanate group coupling agent, ionomer, ethylene acrylic acid copolymer, ethylene methacrylic acid copolymer, and ethylene vinyl acetate copolymer. The exterior material has an inner side resin layer in the inner surface of a metal layer, and an outer-side resin layer in the outside face of metal layer. The inner side resin layer contains polyethylene, polypropylene, ethylene vinyl acetate copolymer, ethylene vinyl acetate alcohol copolymer, ethylene acrylic acid copolymer, ethylene ethylacrylate copolymer, ethylene methyl acrylate copolymer, ethylene methacrylic acid copolymer, ethylene methyl methacrylic acid copolymer, ionomer, polyacrylonitrile, polyvinylidene chloride, PTFE, polychloro trifluoroethylene resin, polyphenylene ether, polyethylene terephthalate hot-melt agent, and polyamide hot-melt agent. The outer-side resin layer contains extended nylon, extended polyethylene naphthalate, extended polybutylene terephthalate, extended polybutylene naphthalate, extended polypropylene, and/or extended polyethylene.