| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a polymer electrolyte membrane useful as a constituting material of a solid polymer fuel cell, a direct liquid fuel cell, and a direct methanol fuel cell, having superior protonic conductivity and high methanol shielding properties, and to provide its manufacturing method, and a polymer film that is a material for the polyelectrolyte membrane and its manufacturing method. <P>SOLUTION: The polyelectrolyte membrane has a protonic conductive group, introduced in an aromatic unit of a polymer film which contains as an essential component at least three kinds of polymer compounds, of a polymer compound having an aromatic unit in the main chain skeleton, a polymer compound having no aromatic unit in the main chain skeleton and has the aromatic unit in a side chain, and a polymer compound having no aromatic unit. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
