کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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182595 | 459434 | 2006 | 4 صفحه PDF | دانلود رایگان |
Submicron-scale silicon pillars produced by a novel lithography-free process were demonstrated to be excellent catalyst support structures for the depositions of Pt and Pt–Ru in liquid-fed microfabricated fuel cell applications. Operating conditions of the polysilicon CVD process and the etching duration were controlled in order to form the pillars with the desired dimension. The pillar-supported catalysts obtained from the electrochemical deposition exhibit good mass activity (0.220 A/mg at 0.5 V (vs. Ag/AgCl) for Pt–Ru) towards methanol oxidation compared to the carbon-supported counterparts. Moreover, the development of this pillar-based support structure is a step closer to the realization of the monolithic integration of a Si-based microfabricated fuel cell.
Journal: Electrochemistry Communications - Volume 8, Issue 8, August 2006, Pages 1235–1238