| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the problems of proton conductors made of conventional polymers that they are poor in thermal resistance, chemical stability and dimensional stability and that they are not able to stably work under a high temperature over 100°C when used for an electrolyte of a fuel cell. <P>SOLUTION: The proton conductive silica is characterized by having at least a fixed anion group represented by formula (1) and proton conductivity of 0.1 S/cm or higher at 150°C and 100% relative humidity (wherein X indicates a substituent selected from C<SB>m</SB>H<SB>2m</SB>(m=1-10), C<SB>m</SB>F<SB>2m</SB>(m=1-10), C<SB>m</SB>Cl<SB>2m</SB>(m=1-10), C<SB>m</SB>Br<SB>2m</SB>(m=1-10), a phenyl group, benzyl group, naphthyl group and anthryl group). <P>COPYRIGHT: (C)2010,JPO&INPIT |
