06-04-2017 дата публикации
Номер: US20170098845A1
The present invention relates to a polymer electrolyte membrane, and a membrane-electrode assembly and a fuel cell containing the same, and the polymer electrolyte membrane comprises a polymer comprising repeating units represented by the following chemical formulas 1-3. Chemical formulas 1-3 are as defined in the specification. The polymer electrolyte membrane has excellent resistance to radical attack and has improved acid-base interaction, thereby maximizing the function of an ion conductive group, and thus can improve the operation performance of a fuel cell in a low humidification state. 2. The polymer electrolyte membrane according to claim 1 , wherein the polymer comprises 100 parts by mole of the repeat unit represented by Formula 3 claim 1 , 1 to 200 parts by mole of the repeat unit represented by Formula 1 and 1 to 200 parts by mole of the repeat unit represented by Formula 2.3. The polymer electrolyte membrane according to claim 1 , wherein the bivalent nitrogen-containing aromatic ring comprises any one selected from the group consisting of pyrrole claim 1 , thiazole claim 1 , isothiazole claim 1 , oxazole claim 1 , iso-oxazole claim 1 , imidazole claim 1 , imidazoline claim 1 , imidazolidine claim 1 , pyrazole claim 1 , triazine claim 1 , pyridine claim 1 , pyrimidine claim 1 , pyridazine claim 1 , pyrazine claim 1 , indole claim 1 , quinoline claim 1 , isoquinoline claim 1 , tetrazole claim 1 , tetrazine claim 1 , triazole claim 1 , carbazole claim 1 , quinoxaline claim 1 , quinazoline claim 1 , indolizine claim 1 , isoindole claim 1 , indazole claim 1 , phthalazine claim 1 , naphthyridine claim 1 , bipyridine claim 1 , benzimidazole claim 1 , imidazole claim 1 , pyrrolidine claim 1 , pyrroline claim 1 , pyrazoline claim 1 , pyrazolidine claim 1 , piperidine claim 1 , piperazine and indoline.5. The polymer electrolyte membrane according to claim 4 , wherein the polymer comprises 100 parts by moles of the repeat unit represented by Formula 3 claim 4 , 1 ...
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