Electrochemical structural stability of au-modified Pt nanoparticles prepared by arc-plasma deposition

Shuntaro Takahashi, Hiroshi Chiba, Naoto Todoroki, Toshimasa Wadayama

研究成果: Conference contribution

3 被引用数 (Scopus)

抄録

The electrochemical structural stability of Au-modified Pt nanoparticles (Aux/Pt100 NPs, where x is the atomic ratio of Au) was investigated. Aux/Pt100 samples were fabricated on a highly oriented pyrolytic graphite substrate at 773 K through sequential arc plasma depositions of Pt followed by Au. In cyclic voltammograms of Aux/Pt100, characteristic currents correlated to the corner and edge sites of the Pt NPs (0.13 V vs. RHE) decreased with increasing x. Electrochemical surface area decay, observed after applying potential cycling between 0.6 and 1.0 V, clearly show that surface modification of the Pt NPs with appropriate amounts of Au atoms located at the corner and edge sites improved the structural stability of the Pt NPs.

本文言語English
ホスト出版物のタイトルPolymer Electrolyte Fuel Cells 15, PEFC 15
編集者H. A. Gasteiger, V. K. Ramani, J. M. Fenton, T. J. Schmidt, D. J. Jones, K. E. Ayers, K. A. Perry, T. F. Fuller, B. S. Pivovar, K. Shinohara, F. N. Buchi, R. A. Mantz, C. Coutanceau, P. Strasser, A. Z. Weber, K. Swider-Lyons, H. Uchida, M. Edmundson, S. Mitsushima, S. R. Narayanan
出版社Electrochemical Society Inc.
ページ657-661
ページ数5
17
ISBN(電子版)9781607685395
DOI
出版ステータスPublished - 2015
イベントSymposium on Polymer Electrolyte Fuel Cells 15, PEFC 2015 - 228th ECS Meeting - Phoenix, United States
継続期間: 2015 10 112015 10 15

出版物シリーズ

名前ECS Transactions
番号17
69
ISSN(印刷版)1938-5862
ISSN(電子版)1938-6737

Other

OtherSymposium on Polymer Electrolyte Fuel Cells 15, PEFC 2015 - 228th ECS Meeting
CountryUnited States
CityPhoenix
Period15/10/1115/10/15

ASJC Scopus subject areas

  • Engineering(all)

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