| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide technique decreasing the change of a bonding load applied to a fuel cell stack. <P>SOLUTION: In the fuel cell stack, a power generation part bonding member 12a applying the bonding load to a power generation part 200 containing an electrolyte membrane 20 and a non-power generation part bonding member 12b applying the bonding load to a non-power generation part 300 not containing the electrolyte membrane 20 are constituted with different constituting members. A coefficient of linear expansion αce of the power generation part bonding member 12a is made lower than an average coefficient of linear thermal expansion αe obtained by weighted-averaging a coefficient of linear expansion of the constituting member of each layer constituting the power generation part 200 by the thickness of each layer. A coefficient of linear expansion αcn of the non-power generation part bonding member 12b is made the same as or almost equal to an average coefficient of linear thermal expansion αn of the non-power generation part 300. <P>COPYRIGHT: (C)2008,JPO&INPIT |
