作者: Makoto Yoshino , Fumio Takei
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摘要: An electrolyte composition containing a sulfonated polyimide-polypyrrolone with specified structure. The polyimide can be obtained through, for example, reaction of 1,4,5,8-naphthalenetetracarboxylic dianhydride, diamine compound and tetramine compound. Thus, there novel obtaining solid membrane that exhibits large ion exchange capacity high proton conductivity, excelling in water resistance low methanol permeability coefficient.