| 摘要 |
<P>PROBLEM TO BE SOLVED: To further heighten an elution restraint effect of an acid component from an electrolyte film than in a prior art without greatly degrading protonic conductivity, in a laminated electrolyte film, and its manufacturing method, used as an electrolyte film for a fuel cell operated at high-temperature region and non-humidified conditions, a membrane electrode assembly using the laminated electrolyte film, and a fuel cell equipped with the membrane electrode assembly. <P>SOLUTION: The laminated electrolyte film is to be a structure laminating a first electrolyte film containing engineering plastic with an acid group, and crosslinked polymer crosslinking a polymer chain obtained by polymerizing an acid group and a first monomer having a polymerizable functional group, with an elution rate of an acid component into water of 60% or less, and a second electrolyte film having a second monomer with an acid group impregnated in a polymer film, in the order of the first electrolyte film, the second electrolyte film, and the first electrolyte film. <P>COPYRIGHT: (C)2010,JPO&INPIT |
