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  1. 学術雑誌論文

Electrolyte Dependency on Ca2+ Insertion and Extraction Properties of V2O5

https://repo.lib.tut.ac.jp/records/2173
https://repo.lib.tut.ac.jp/records/2173
395326bf-4562-4313-baf9-7fe42f16df95
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j00134651-0168-020528.pdf j00134651-0168-020528.pdf (1.2 MB)
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Item type 学術雑誌論文 / Journal Article(1)
公開日 2021-03-02
タイトル
タイトル Electrolyte Dependency on Ca2+ Insertion and Extraction Properties of V2O5
タイトル
タイトル Electrolyte Dependency on Ca2+ Insertion and Extraction Properties of V2O5
言語 en
言語
言語 eng
資源タイプ
資源タイプ journal article
著者 村田, 芳明

× 村田, 芳明

村田, 芳明

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稲田, 亮史

× 稲田, 亮史

稲田, 亮史

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櫻井, 庸司

× 櫻井, 庸司

櫻井, 庸司

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Murata, Yoshiaki

× Murata, Yoshiaki

en Murata, Yoshiaki

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Inada, Ryoji

× Inada, Ryoji

en Inada, Ryoji

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Sakurai, Yoji

× Sakurai, Yoji

en Sakurai, Yoji

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抄録
内容記述タイプ Abstract
内容記述 The influence of the electrolyte structure on the Ca2+ ion insertion and extraction properties of V2O5 was studied by changing the electrolyte concentration or solvent. The electrolyte structure was analyzed by Raman spectroscopy. The most significant changes were found in the molar ratio of the contact ion pair (CIP) in the total ionic species. Among the various electrolytes, 0.3 M Ca(TFSI)2 dissolved in ethylene carbonate and dimethyl carbonate (0.3 M EC:DMC) and 0.5 M Ca(TFSI)2 dissolved in triglyme (0.5 M G3) have relatively small molar ratios of CIPs. The electrochemical performance was strongly related to the molar ratio of the CIPs. A high coulombic efficiency and high capacity were observed when using 0.3 M EC–DMC. Moreover, 0.5 M G3 showed the highest capacity despite its low coulombic efficiency. This could be related to the formation of solvent-separated ion pairs (SSIPs) due to the low polarity of G3 and its solvation form that encapsulates Ca2+. SSIPs had a reductively unstable character as that of the CIPs. Surface analysis revealed that the thinner the surface film produced, the lower the CIP content. This was deemed responsible for the rate performance enhancements, given the potential electrochemical instability of the Ca-containing CIPs.
書誌情報 Journal of The Electrochemical Society
en : Journal of The Electrochemical Society

巻 168, p. 020528, 発行日 2021
出版者
出版者 The Electrochemical Society
ISSN
収録物識別子タイプ ISSN
収録物識別子 0013-4651
DOI
関連タイプ isVersionOf
識別子タイプ DOI
関連識別子 10.1149/1945-7111/abdfe4
権利
権利情報 © 2021 The Author(s). Published on behalf of The Electrochemical Society by IOP Publishing Limited.This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 License (CC BY, http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse of the work in any medium, provided the original work is properly cited.
関連サイト
識別子タイプ URI
関連識別子 https://iopscience.iop.org/article/10.1149/1945-7111/abdfe4
関連名称 The Electrochemical Society
著者版フラグ
出版タイプ AM
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