Fabrication of an Organic Redox Capacitor with a Neutral Aqueous Electrolyte Solution
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- NAKAGAWA Yuto
- Faculty of Pure and Applied Sciences, University of Tsukuba
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- TSUJIMURA Seiya
- Faculty of Pure and Applied Sciences, University of Tsukuba
抄録
<p>Organic redox capacitors using neutral aqueous electrolyte solutions are environmentally friendly and safe. In this study, we report on the fabrication of an all-organic redox capacitor using NaCl solution. We used a 2,2,6,6-tetramethylpiperidinyl-N-oxyl (TEMPO) benzene derivative (4-hydroxy TEMPO benzoate, HTB) and 9,10-anthraquinone (AQ) as active materials for the positive electrode and negative electrode, respectively. The former has a positive redox potential, and the latter reacts with two electrons, which enhances the energy density. The capacitor fabricated with HTB and AQ has an energy density of 8.36 W h kg−1 at a rate of 10 C, which is nearly two times higher than that of the electric double-layer capacitor consisting of Ketjen black. The cycle test indicates that important factors affecting its performance are the ion diffusion and the dispersion of the active materials.</p>
収録刊行物
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- Electrochemistry
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Electrochemistry 89 (3), 317-322, 2021-05-05
公益社団法人 電気化学会
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詳細情報 詳細情報について
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- CRID
- 1390006440920950656
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- NII論文ID
- 130008034699
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- ISSN
- 21862451
- 13443542
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用可