| 摘要 |
A fuel cell stack is constituted by a plurality of stacked fuel cells (1). Each fuel cell (1) comprises a membrane electrode assembly (5) in which a solid polymer electrolyte (2) is gripped between an anode membrane (3) and a cathode membrane (4), an anode gas separator plate (6A) provided with an anode gas channel (6C) facing the anode membrane (3), and a cathode gas separator plate (6B) provided with a cathode gas channel (6D) facing the cathode membrane (4). When stacked, the anode gas separator plate (6A) of a fuel cell (1) is in contact with the cathode gas separator plate (6B) of an adjacent fuel cell (1). The anode gas separator plate (6A) and the cathode gas separator plate (6B) have different flexural strength or flexural modulus so as to prevent damage to the gas separator plates during stacking and gas or cooling water leaks.
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