| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel cell stack for suppressing the backflow of impure gas into a fuel gas flow path, and to provide its manufacturing method. <P>SOLUTION: The fuel cell stack 100 comprises a plurality of laminated single cells 130 having the fuel gas flow paths, wherein a resistance part 25 is provided in each fuel gas flow path for suppressing the flow of fuel gas. It satisfies ΔOc/ΔPo≥r/(2(St2-1)), where ΔP<SB>c</SB>is pressure drop from the inlet to the outlet of the fuel gas flow path, ΔP<SB>o</SB>is pressure loss from the inlet of the fuel gas flow path to the resistance part, (1+r) is a maximum dispersion of flow path resistance from the inlet of the fuel gas flow path to the resistance part between the single cells, and St<SB>2</SB>is the stoichiometric ratio of fuel gas in the fuel gas flow path having minimum flow path resistance. <P>COPYRIGHT: (C)2009,JPO&INPIT |
