Article Arrangement of Al Ions between Ionic Liquid and Graphite Electrode Interface by AFM Force Curve Measurement

Atsuki TABO ; Hisayoshi MATSUSHIMA ; Takahiro OHKUBO ; Kei NISHIKAWA SAMURAI ORCID (National Institute for Materials Science) ; Mikito UEDA

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Atsuki TABO, Hisayoshi MATSUSHIMA, Takahiro OHKUBO, Kei NISHIKAWA, Mikito UEDA. Arrangement of Al Ions between Ionic Liquid and Graphite Electrode Interface by AFM Force Curve Measurement. Electrochemistry. 2024, 92 (4), 23-69151. https://doi.org/10.5796/electrochemistry.23-69151
SAMURAI

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(abstract)

The arrangement of ions at the interface between highly oriented pyrolytic graphite (HOPG) and Aluminum chloride–1-ehtyl-3methylimidazolium chloride (AlCl3–EmImCl) ionic liquid was evaluated using Atomic Force Microscopy (AFM) force curve measurements. In the force curve measurements, three steps were observed towards the HOPG electrode. The width of each step was 0.3, 0.4, and 0.5nm in order from the final arrival point. Their step widths were regarded as the thicknesses of EmIm+, Al2Cl7−, or their mixed layers. The force curve measurements at each potential demonstrated that the width of the first layer close to the HOPG tended to decrease as the potential shifted towards the less noble side.

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Keyword: Ionic Liquid, AFM

Date published: 2024-04-01

Publisher: The Electrochemical Society of Japan

Journal:

  • Electrochemistry (ISSN: 13443542) vol. 92 issue. 4 p. 43011- 23-69151

Funding:

  • Japan Society for the Promotion of Science 21K04734

Manuscript type: Publisher's version (Version of record)

MDR DOI:

First published URL: https://doi.org/10.5796/electrochemistry.23-69151

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Updated at: 2024-10-13 08:30:29 +0900

Published on MDR: 2024-10-13 08:30:29 +0900

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