کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
181192 | 459397 | 2009 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Improved lifetime of PEM fuel cell catalysts through polymer stabilization Improved lifetime of PEM fuel cell catalysts through polymer stabilization](/preview/png/181192.png)
A novel approach to increase lifetime of Pt/C catalysts was demonstrated and shown that Nafion-stabilized Pt catalyst (denoted here as Nafion-Pt/C) synthesized by a colloid route gives rise to an enhanced durability as compared to a conventional Pt/C catalysts commonly used in PEM fuel cell. A high catalytic activity of the catalyst is also observed by both CV (cyclic voltammetry) and ORR (oxygen reduction reaction) measurements. This catalyst durability in comparison with conventional Pt/C is increased directly by electrochemically-accelerated durability test (ADT). The loss rate of electrochemical active area (ECA) for Nafion-Pt/C catalysts is only 0.004 m2 g−1 cycle−1, compared to a value of 0.012 m2 g−1 cycle−1 for Pt/C. This indicates the catalyst is three times higher durability than Pt/C.
Journal: Electrochemistry Communications - Volume 11, Issue 8, August 2009, Pages 1610–1614