SEPARATOR FOR POLYMER ELECTROLYTE FUEL CELL, POLYMER ELECTROLYTE FUEL CELL, METHOD OF EVALUATING SEPARATOR FOR POLYMER ELECTROLYTE FUEL CELL, AND METHOD OF MANUFACTURING SEPARATOR FOR POLYMER ELECTROLYTE FUEL CELL

摘要

PPROBLEM TO BE SOLVED: To provide a separator for a polymer electrolyte fuel cell having a surface with high capability of discharging condensate even if the pressure loss of the supply gas is low, and to provide a polymer electrolyte fuel cell using the separator for a polymer electrolyte fuel cell, and a method of evaluating the separator for a polymer electrolyte fuel cell. PSOLUTION: The separator for a polymer electrolyte fuel cell contains electrically conductive carbon and a binder that binds the electrically conductive carbon. Reaction gas passages 30C, 40C are formed on one of main surfaces. A water droplet falling angle of the surfaces of the passages 30C, 40C is not smaller than 5 degrees and not greater than 45 degrees when a water droplet of not less than 50 l and not more than 80 l is dropped under a condition in which the ambient temperature is not lower than 50 C and not higher than 90 C and the ambient relative humidity is not lower than 70% and not higher than 100%. PCOPYRIGHT: (C)2006,JPO&NCIPI