Oxygen reduction reaction properties of dry-process-synthesized Pt/graphene/SiC(0001) model catalyst surfaces

M. Watanabe, J. Moon, T. Tanabe, N. Todoroki, T. Wadayama

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

We investigated the electrochemical properties of Pt/graphene/SiC(0001) model nanostructures prepared by thermal annealing of the SiC(0001) substrates at 1300-1600 °C in vacuum, followed by the vacuum deposition of Pt. Thermal annealing of the Si-terminated 4H-and 6H-SiC(0001) substrate surfaces generated graphene layers as a result of the sublimation of Si atoms of the substrates: the thickness of the graphene layer depended on the annealing temperatures. For example, annealing of the 4H-and 6H-SiC(0001) substrates at 1600°C generated fewer than ca. 20 monolayers and ca. 40 monolayers of graphene, respectively, as judged by cross-sectional scanning transmission electron microscopy (STEM) images. Then, Pt was deposited on the prepared graphene/SiC(0001) surfaces at room temperature by electron-beam deposition in ultra-high vacuum (~10' Pa). The electrochemical properties of the prepared nanostructures are discussed on the basis of the cyclic voltammetry and linear sweep voltammetry results.

本文言語English
ホスト出版物のタイトルECS Transactions
編集者D.J. Jones, H. Gasteiger, H. Uchida, T.J. Schmidt, F. Buechi, K.E. Swider-Lyons, B.S. Pivovar, P.N. Pintauro, V.K. Ramani, J.M. Fenton, P. Strasser, K.E. Ayers, A.Z. Weber, T.F. Fuller, R.A. Mantz, H. Xu, C. Coutanceau, S. Mitsushima, S. Narayan, P. Shirvanian, Y.-T. Kim, Y. Gochi-Ponce
出版社Electrochemical Society Inc.
ページ525-530
ページ数6
13
ISBN(電子版)9781607688600
ISBN(印刷版)9781510871731
DOI
出版ステータスPublished - 2018
外部発表はい
イベントSymposium on Polymer Electrolyte Fuel Cells and Electrolyzers 18, PEFC and E 2018 - AiMES 2018, ECS and SMEQ Joint International Meeting - Cancun, Mexico
継続期間: 2018 9 302018 10 4

出版物シリーズ

名前ECS Transactions
番号13
86
ISSN(印刷版)1938-6737
ISSN(電子版)1938-5862

Conference

ConferenceSymposium on Polymer Electrolyte Fuel Cells and Electrolyzers 18, PEFC and E 2018 - AiMES 2018, ECS and SMEQ Joint International Meeting
国/地域Mexico
CityCancun
Period18/9/3018/10/4

ASJC Scopus subject areas

  • 工学(全般)

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