Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1290559 | Journal of Power Sources | 2008 | 4 Pages |
Abstract
A Pt catalyst film with dendritic microcrystalline structure has been prepared by reducing PtO2 deposited by reactive sputtering. It is to be employed as the cathode catalyst of a polymer electrolyte fuel cell (PEFC). Despite using no support material, this dendritic Pt film exhibits a very low density of 3.3 g cmâ3. When applying the dendritic Pt as the cathode catalyst layer for a single fuel cell, the dendritic Pt provided higher performance, larger electrochemical surface area (ECA) and improved diffusion characteristics compared to a conventional sputtered Pt film. The activity based on unit ECA of the dendritic Pt was higher than that of Pt/C.
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Authors
Kazuhiro Yamada, Kazuya Miyazaki, Shinosuke Koji, Yoshinobu Okumura, Masaaki Shibata,