METHOD AND SYSTEM FOR STARTING UP FUEL CELL STACK AT SUBZEROTEMPERATURES, AND METHOD OF DESIGNING FUEL CELL STACK

摘要

A method of starting up at a subzero temperature a solid polymer electrolyte fuel cell stack that is formed by stacking a plurality of layers of separators an d membrane electrode assemblies having a solid polymer electrolyte membrane and electrodes. The method includes a step of using a solid polymer electrolyte fuel cell stack in which the separators are made from metal and have a cross-sectional waveform structure , and a space that is formed between at least a portion of the separators and separators that are placed adjacent to this portion of the separators is used as a coolant flow passage .