| 摘要 |
A proton conductive membrane according to the invention includes layere d clay mineral powder which is a cation exchanger or an anion exchanger, and a crosslinking structure including an -O-SO2-O- group which crosslinks particl es of the layered clay mineral powder. The proton conductive membrane may be obtained by applying a modifying agent which contains one or more compounds selected fro m the group consisting of sulfuric acid and metal sulfates, to the layered clay mineral powder, each particle of the layered clay mineral powder having an acid site on a surface thereof. Thus, a phosphoric acid-derived compound which crosslinks t he particles of the layered clay mineral powder is replaced by the sulfuric aci d which isa stronger acid, whereby the proton conducting ability of the proton conductiv e membrane can be improved. |
