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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

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.

Original languageEnglish
Title of host publicationPolymer Electrolyte Fuel Cells 14
EditorsK. 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
PublisherElectrochemical Society Inc.
Pages81-87
Number of pages7
Edition3
ISBN (Electronic)9781607685395
DOIs
Publication statusPublished - 2014 Jan 1
Event14th Polymer Electrolyte Fuel Cell Symposium, PEFC 2014 - 226th ECS Meeting - Cancun, Mexico
Duration: 2014 Oct 52014 Oct 9

Publication series

NameECS Transactions
Number3
Volume64
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

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

ASJC Scopus subject areas

  • Engineering(all)

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    Sugawara, Y., Sasaki, M., Muto, I., & Hara, N. (2014). Dissolution of platinum single crystal surfaces under potential cycling in sulfuric acid solution. In 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 (Eds.), Polymer Electrolyte Fuel Cells 14 (3 ed., pp. 81-87). (ECS Transactions; Vol. 64, No. 3). Electrochemical Society Inc.. https://doi.org/10.1149/06403.0081ecst