期刊
CHEMISTRY OF MATERIALS
卷 26, 期 1, 页码 381-393出版社
AMER CHEMICAL SOC
DOI: 10.1021/cm401445h
关键词
fuel cells; ionomer; polymer electrolyte membranes; catalyst layers; catalyst inks; membrane electrode assemblies
The polymeric ionomer plays a vital role in PEM fuel cell device technology, not simply as the membrane that transports protons and water from one electrode to another but as the binder and transport medium responsible for electrochemical activity within the catalyst layer. This perspective examines critical features of the catalyst layer ionomer. It highlights the current understanding of interactions of ionomer in catalyst inks, where the microstructure of the catalyst layer is largely formed, and in the catalyst layer itself. Properties important to the design and function of next generation ionomers and the challenges faced in replacing PFSA ionomers with hydrocarbon-based analogues are closely examined.
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