Suppressed activation energy for interfacial charge transfer of a Prussian blue analog thin film electrode with hydrated ions (Li+, Na +, and Mg2+)

Yoshifumi Mizuno, Masashi Okubo*, Eiji Hosono, Tetsuichi Kudo, Haoshen Zhou, Katsuyoshi Oh-Ishi

*この研究の対応する著者

研究成果: Article査読

115 被引用数 (Scopus)

抄録

Interfacial charge transfer is one of the most important fundamental steps in the charge and discharge processes of intercalation compounds for rechargeable batteries. In this study, temperature-dependent electrochemical impedance spectroscopy was carried out to clarify the origin of the high power output of aqueous batteries with Prussian blue analog electrodes. The activation energy for the interfacial charge transfer, Ea, was estimated from the temperature dependence of the interfacial charge transfer resistance. The Ea values with Li+ and Na+ aqueous electrolytes were considerably smaller than those with organic electrolytes. The small Ea values with aqueous electrolytes could result from the fact that the Coulombic repulsion at the interface is largely suppressed by the screening effect of hydration.

本文言語English
ページ(範囲)10877-10882
ページ数6
ジャーナルJournal of Physical Chemistry C
117
21
DOI
出版ステータスPublished - 2013 5 30
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • エネルギー(全般)
  • 物理化学および理論化学
  • 表面、皮膜および薄膜

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