| 摘要 |
To provide a simple and compact fuel cell system that prevents degradation of the performance of a fuel cell stack due to accumulation of impurities and improves fuel efficiency by reducing discharge of a fuel gas. An impurity storage section 30 that communicates with an outlet of an anode gas passage of each cell 20 and stores an impurity in a fuel gas is formed in a fuel cell stack 2. The volume of the impurity storage section 30 is preferably larger than the volume of a fuel gas inlet manifold 26.
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