(US4828945-A)      A solid electrolyte sheet comprises an ion conductive inorganic solid electrolyte powder (I) and an insulating elastomer (II). (I) is uniformly dispersed in (II) in vol. fraction 55-95 %. The sheet has hardness (ASTM A) of 65-96 and is 10-250 micron thick. Pref. (I) is PbCu4I(2-x)Cl(3-x) where x = 0.2-0.6 and (II) is e.g. polybutadiene, natural rubber, polyisoprene, etc.. Also claimed is a solid electrolyte sheet comprising a reticulate material and a mixt. of (I) and (II) as above. At least the openings of the reticulate material are filled with the mixt..    USE/ADVANTAGE -   Used in microcells, etc. The sheets can be made thin with large surface area. Excellent ion-conductivity and good processability, productivity, storage stability, flexibility and adhesion to active substances are obtd..    (9pp)    (JP93076136-B)      A solid electrolyte sheet comprises (1) 55-95 vol.% ion-conductive inorganic solid electrolyte powder (I) uniformly dispersed in an insulating elastomer (II), the sheet having a hardness (ASTM A) of 65-96 and a thickness fo 10-250 microns; or (2) a non-conductive reticulated material and a mixt. of 55-95 vol.% (I) uniformly dispersed in (II), at least the openings of the reticulated material being filled with the mixt.    A variety of (I) may be used, pref. RbCu4I(2-x)Cl(3+2) (where x = 0.2-0.6). (II) may contain at least 50 vol.% elastomer having no unsaturation pref. (II) include 1,4-polybutadiene, natural rubber, polyisoprene, SBR, NBR, EPDM, EPR, urethane rubber, polyester rubber, chloroprene rubber, epichlorohydrin rubber, silicone rubber, SBS, SIS, SEBS, SEp, butyl rubber, phosphazene rubber, polyethylene, polypropylene, polyethylene oxide, polypropylene oxide, polystyrene, PVC, EVA, 1,2-polybutadiene, epoxy resin, phenol resin, cyclised polybutadiene, cyclised polyisoprene or PMMA.    USE/ADVANTAGE -   Useful in solid electrochemical elements, e.g. solid microcells, etc. The sheet has excellent ion-conductivity, with superior processability, productivity, storage stability, flexibility and adhesion to electrode active substances, and can be made thinner and with greater surface area. (J01122567-A)    (JP93076137-B)      A solid electrolyte sheet consists of an inorganic solid ion conductive electrolyte powder and a dielectric polymer elastomer. The inorganic solid electrolyte powder is in amt. 55-95 vol.% and uniformly dispersed in the polymer elastomer. The solid electrolyte sheet has hardness 65-96 (ASTM A hardness) and thickness 10-250 microns.    Pref. inorganic electrolyte powder is e.g. KyRb1-yCu4I2xCl3+x (y is 0-0.5, x is 0.2-0.6), MAg4I5 (M is Rb or K), 0.4LiSiO4.0.6Li3VO4, H3Mo12PO40.29H2O or H3W12PO40.29H2O etc. The dielectric polymer elastomer is e.g. 1,4-polybutadiene, natural rubber, polyisoprene, SRB, NBR, EPDM, EPM, urethane rubber, polyester rubber, polypropylene, polyethyleneoxide, polystyrene, PVC, epoxy resin, phenol resin or polymethyl methacrylate etc.    USE/ADVANTAGE -   Excellent ionic electroconductivity. Used in small electric cells used in IC or LSI devices for an electronic calculator, camera, watch. etc. (J63239774-A)    (JP93076139-B)      Solid electrolyte sheet consists of a dielectric net shape body, and an electroconductive compsn. composed of dielectric polymer elastomer and 55-95 vol.% of inorganic solid electrolyte powder having the ionic electroconductivity uniformly dispersing in the dielectric polymer elastomer matrix packed in the openings of the dielectric net shape body.    USE/ADVANTAGE -   The sheet shows an excellent ionic electroconductivity, and it is suitable for use in small electric cell used in IC or LSI device for electronic calculator, camera or watch etc. (J63239776-A)