固体高分子形燃料電池の低温運転において膜物性がセル性能に与える影響

抄録

Polymer electrolyte fuel cells (PEFCs) have less environmental impact and higher efficiency, so that they have been applied for vehicles. PEFCs are usually operated at about 70°C, but it is necessary to operate them stably at lower temperatures for wide application. The properties of a polymer electrolyte membrane might be dependent on temperature and have effect on cell performance. In this study, we used a two-dimensional model incorporating electrochemical kinetics and transport phenomena of mass, charge and heat to investigate the effect of membrane properties on cell performance at lower temperatures.