Dissolution of platinum single crystal surfaces under potential cycling in sulfuric acid solution

Yu Sugawara, Mayu Sasaki, Izumi Muto, Nobuyoshi Hara

研究成果: Conference contribution

4 被引用数 (Scopus)

抄録

The dissolution of Pt(100), Pt(110), and Pt(111) single crystal surfaces under potential cycling conditions in 0.5 M H2SO4 solution was investigated by electrochemical measurements, ICPMS analyses, and EC-STM observations. Pt(111) surface had higher corrosion resistance than Pt(100) and Pt(110) during potential cycles in 0.5 M H2SO4 solution, and hardly dissolved in the potential range below 1.2 V. EC-STM observations revealed the step structures became straight in the Pt(100) surface and the roughness in Pt(111) terraces gradually increases by the potential cycling in the range of 0.5 - 1.4 V. The formation of Pt islands with a higher surface energy by the potential cycling brought the increase of Pt dissolution rate in the Pt(111) surface with the number of cycle.

本文言語English
ホスト出版物のタイトルPolymer Electrolyte Fuel Cells 14
編集者K. Shinohara, S. R. Narayanan, K. Swider-Lyons, A. Weber, C. Coutanceau, R. Mantz, H. A. Gasteiger, D. Jones, M. Edmundson, S. Mitsushima, V. Ramani, Y. Meas, T. Fuller, H. Uchida, F. N. Buchi, K. A. Perry, T. J. Schmidt, J. M. Fenton, P. Strasser
出版社Electrochemical Society Inc.
ページ81-87
ページ数7
3
ISBN(電子版)9781607685395
DOI
出版ステータスPublished - 2014 1 1
イベント14th Polymer Electrolyte Fuel Cell Symposium, PEFC 2014 - 226th ECS Meeting - Cancun, Mexico
継続期間: 2014 10 52014 10 9

出版物シリーズ

名前ECS Transactions
番号3
64
ISSN(印刷版)1938-5862
ISSN(電子版)1938-6737

Other

Other14th Polymer Electrolyte Fuel Cell Symposium, PEFC 2014 - 226th ECS Meeting
国/地域Mexico
CityCancun
Period14/10/514/10/9

ASJC Scopus subject areas

  • 工学(全般)

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