In-situ Electrochemical Atomic Force Microscopy on Au(100) in Room Temperature Ionic Liquid: 1-Ethyl-3-methyl-imidazolium Bis(trifluoromethanesulfonyl) Imide

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概要

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• A Au(100) single crystal surface in 1-ethyl-3-methyl-imidazolium bis(trifluoromethanesulfonyl) imide (EMImTFSI) was investigated by means of in-situ electrochemical atomic force microscopy (EC-AFM). High-resolution EC-AFM images with fourfold symmetry and an interatomic distance of 0.3 nm, corresponding to a bare and unreconstructed Au(100)-($1\times 1$) structure, were observed in the potential range from $-0.9$ to 0.3 V vs Ag/Ag+ in 1-ethyl-3-methyl-imidazolium tetrafluoroborate (EMImBF4). The top layer of a multilayered island on Au(100) in EMImTFSI collapsed at a constant decay rate and the decay rate had a positive potential dependence when the Au(100) electrode was kept at any potential between $-0.6$ and 0.9 V vs Ag/Ag+ in EMImBF4. It was also found that the decay rate in EMImTFSI was higher than that in EMImBF4 in the potential region from 0.1 to 0.9 V vs Fc/Fc+ electrode.

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2006-03-15

著者

• Hirai Nobumitsu

  Department Of Materials Science And Processing Graduate School Of Engineering Osaka University

• Yokogawa Tomohiko

  Department Of Applied Biochemistry Kyoto Prefectural University

• Tanaka Toshihiro

  Department Of Applied Chemistry Graduate School Of Engineering Osaka City University

• Tanaka Toshihiro

  Department of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan

• Yokogawa Tomohiko

  Department of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan

• Hirai Nobumitsu

  Department of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan

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