Abstract
Development trend of fluorinated polymer electrolyte membrane was reviewed. Membrane characteristics and cell performance of various fluorinated membrane were measured under operating condition of fuel cell. Mechanical properties of PTFE fibril-reinforced membranes developed by Asahi Glass company such as modulus and tear strength were investigated, and compared with non-reinforced membranes. The fibril-reinforced membranes have shown conspicuous improvement while their electric resistance and cell performance were almost same as those of non-reinforced ones. Good durability of the fibril-reinforced membrane has been confirmed in the cell operation at 80 °C for 5800 hrs.
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