Characterization of Pt-based transition metal alloy electrodes for PEFC

M. Uebayashi, Y. Sawada, Y. Sato, T. Itoh, B. Jeyadevan, K. Tohji

研究成果: 書籍の章/レポート/Proceedings会議への寄与査読

1 被引用数 (Scopus)

抄録

Pt metal is generally used as electrocatalyst in polymer electrolyte fuel cells (PEFC). However, the catalytic action of Pt anode is obstructed by the adsorption of CO gas molecules on to their surface and consequently the efficiency of the fuel cell decreases. Moreover, the activity of PEFC deteriorates even if the presence of CO is as low as 100 ppm. In this paper, attempts are being made to replace the Pt with Pt-based transition metal alloys such as PtFe and PtCo to overcome the above problem and also to improve the activity of fuel cells. The PtFe/C and PtCo/C necessary for the preparation of the electrodes were synthesized by depositing PtFe and PtCo particles synthesized using the polyol process on to the surface ketjenblack. From the results of cyclic voltammetry, we could confirm that PtFe/C could be used as an alternate material of Pt/C. However, Fe ions get eluted in the electrolyte. Thus, the study that can control the elution of Fe ion is necessary. Also in case of PtCo/C, we could confirm that Co ion doesn't get to elute, however the hydrogen oxidation reaction current is quite low.

本文言語英語
ホスト出版物のタイトルWATER DYANMICS
ホスト出版物のサブタイトル4th International Workshop on Water Dynamics
ページ162-165
ページ数4
DOI
出版ステータス出版済み - 2007
イベント4th International Workshop on Water Dynamics - Sendai, 日本
継続期間: 2006 11月 72006 11月 8

出版物シリーズ

名前AIP Conference Proceedings
898
ISSN(印刷版)0094-243X
ISSN(電子版)1551-7616

会議

会議4th International Workshop on Water Dynamics
国/地域日本
CitySendai
Period06/11/706/11/8

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