SOLID POLYMER ELECTROLYTE FUEL BATTERY HAVING IMPROVED PERFORMANCE AND RELIABILITY AND MANUFACTURING METHOD THEREOF

摘要

A fuel battery includes a solid polymer electrolyte film (114) formed by a first solid polymer electrolyte and catalyst electrodes (102, 108) attached to a rough surface. Here, the solid polymer electrolyte film (114) has a rough surface. The catalyst electrodes (102, 108) have catalyst layers (106, 112) and substrate layers (104, 110) holding the catalyst layers (106, 112). The catalyst layers (106, 112) contain a catalyst and a second solid polymer electrolyte. The catalyst layers (106, 112) are attached to the rough surface. The rough surface has a contour curve having an arithmetic average height (Ra) as follows: 0.5 <= nm Ra <= 100 nm. The contour curve elements of the rough surface have an average length (RSm) as follows: 0.5 <= nm RSm <= 1000 nm. However, the Ra and the RSm are defined by the JIS-B0601-2001 (ISO4287-1997).