| 摘要 |
<p>A polyelectrolyte material, a polyelectrolyte component, a membrane electrod e composite body, and a polyelectrolyte type fuel cell. The above material is used in the above fuel cell or the like as the above component or the composite body. In addition to a conventional fuel cell using hydrogen gas a s a fuel, a direct type fuel cell using methanol as a fuel is also attracting our attention. Although a material having performances excellent in proton conductivity and excellent in methanol shielding property and mechanical strength is required for the direct type fuel cell, the conventional materia l is short of satisfying the requirements. The above material is immersed in 1 - 30 wt.% methanol solution at 40-80~C for 12 hours, and then is immersed in pure water at 20~C for 24 hours to obtain a polyelectrolyte material having Rw, represented by the following expression, of 75-100 wt.% and an ionic radical in a water-containing state immediately after pulled up, whereby the above problems are solved. Rw= [Wnf/(Wfc+Wnf)] ~ 100, in the expression, Wnf : non-frozen water amount per weight one gram of dry polyelectrolyte material Wfc: low-melting point water amount per weight one gram of dry polyelectroly te material</p> |
