FUEL CELL ELECTROCATALYST INK, ELECTROCATALYST LAYER, MEMBRANE-ELECTRODE ASSEMBLY, AND POLYMER ELECTROLYTE FUEL CELL

摘要

PPROBLEM TO BE SOLVED: To provide a fuel cell electrocatalyst ink, an electrocatalyst layer, a membrane-electrode assembly, and a polymer electrolyte fuel cell having a cell performance of high catalyst dispersibility, high power generation efficiency, and high catalyst using efficiency. PSOLUTION: An electrocatalyst ink used to form an electrocatalyst layer of a polymer electrolyte fuel cell comprises solvents and conductive particles carrying a polymer electrolyte and a catalyst. The solvents are of two or more kinds. In addition to this electrocatalyst ink, the present invention provides an electrocatalyst layer, a membrane electrode assembly, and a polymer electrolyte fuel cell using this electrocatalyst ink. PCOPYRIGHT: (C)2010,JPO&INPIT