Electric Field-Dependence of Double Layer Capacitances by Current-Controlled Charge-Discharge Steps

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Author: He, Ridongほか

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Publication date: 2020-06-08

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Note (General)：: Voltage vs. time curves of double layer capacitances (DLCs) by current-controlled charge and discharge steps have been recognized to be composed of tr...

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Material Type: 文書・図像類
Title: Electric Field-Dependence of Double Layer Capacitances by Current-Controlled Charge-Discharge Steps
Author/Editor: He, Ridong
Jeremiah, Aoki Koichi
Chen, Jingyuan
Author Heading: He, Ridong
Jeremiah, Aoki Koichi
Chen, Jingyuan
Publication Date: 2020-06-08
Publication Date (W3CDTF): 2020-06-08
Periodical title: Electrochem
No. or year of volume/issue: 2020-1 2
Volume: 2020-1
Issue: 2
Pages: 217-225
ISSN (Periodical Title): ISSN : 2673-3293
Text Language Code: eng
Target Audience: 一般
Note (General): Voltage vs. time curves of double layer capacitances (DLCs) by current-controlled charge and discharge steps have been recognized to be composed of triangular waves. They are deviated slightly from triangles from the viewpoint of the time dependence or the constant phase element of the DLC. In order to evaluate the deviation, we measured DLCs of a platinum (Pt) electrode in KCl solution by current-control. Each time-voltage curve was convex rather a line, and was followed by the power law. Even if the time dependence was subtracted from each curve, the enhancement of the DLC was noticeable with an increase in the time well as the voltage. It can be attributed to the electric field e ect, in which dipoles of solvents are oriented on an electrode so strongly that the DLC may be increased. The field dependence can be justified with the kinetic theory of interacting dipoles of solvents on an electrode through the observed linearity of the logarithmic DLC with the net voltage. This concept was applied to a commercially
Access Restrictions: 限定公開
Rights (production): (C) 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license.
Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
https://irdb.nii.ac.jp
Original Data Provider (Database): 福井大学 : 福井大学学術機関リポジトリ