PROTON-CONDUCTING CRYSTALLIZED GLASS SOLID ELECTROLYTE

摘要

PROBLEM TO BE SOLVED: To provide a proton conductor for a fuel cell, hydrogen sensor, water electrolysis device, gas generator or humidity control device higher in heat resistance and moisture resistance than a conventional glass conductor, and having an electric conductivity above 10-3Scm-1at practical levels; and to provide its manufacturing method. SOLUTION: This proton conductor is formed of heated steam-treated phosphate-based crystallized glass crystallized by subjecting phosphate-based glass containing phosphate not smaller than 50 mol% and smaller than 75 mol% in P2O5equivalent to a heated steam treatment in an atmosphere in a condition at a temperature not lower than 250°C and lower than 400°C. The glass contains a metal oxide selected from BaO, CaO, Al2O3and ZnO. COPYRIGHT: (C)2008,JPO&INPIT