POLYELECTROLYTE COMPOSITION, POLYELECTROLYTE MEMBRANE, MEMBRANE ELECTRODE ASSEMBLY, AND SOLID POLYMER ELECTROLYTE FUEL CELL

摘要

The present invention provides a polymer electrolyte composition comprising a polymer electrolyte (A component) having an ion exchange capacity of from 0.5 to 3.0 meq/g, a compound (B component) having a thioether group and a compound (C component) having an azole ring, wherein a mass ratio (B / C) of the B component to the C component is 1 / 99 to 99 / 1, and a total content of the B component and C component is 0.01 to 50% by mass based on the solid content in the polymer electrolyte composition.