METHOD OF PROPERTY RECOVERY OF POLYMER ELECTROLYTE FUEL CELL

摘要

PROBLEM TO BE SOLVED: To recover characteristics of a polymer electrolyte fuel cell whose performance is degraded as a result of metal ion or other pollutants eluted from a separator and other members getting accumulated inside the cell during a long-time continuous operation. SOLUTION: A cell with degraded performance is loaded with at high-current density, and the current is reversed or cleansed by passing acid water with pH not more than 7 through a gas flow path.