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首页> 外文期刊>Journal of industrial and engineering chemistry >Understanding the enhanced electrochemical performance of TEMPO derivatives in non-aqueous lithium ion redox flow batteries
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Understanding the enhanced electrochemical performance of TEMPO derivatives in non-aqueous lithium ion redox flow batteries

机译：了解在非水锂离子氧化还原流电池中的Tempo衍生物的增强电化学性能

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摘要

Non-aqueous lithium-ion redox flow batteries (Li-RFBs) have recently garnered much interest because of their high operating voltage and energy density. Albeit these outstanding advantages, challenges, such as poor cyclability and efficiency, still remain in employing the practical application. In an attempt to address these problems, a series of 2,2,6,6-tetramethylpiperidine 1-oxyl (TEMPO) and TEMPO derivatives catholytes were prepared and investigated as redox-active materials. Electrochemical evaluation exhibited that the introduction of polar and electron-withdrawing substituents to TEMPO was able to enhance the rate capability and cycling stability, when compared to those with the neat TEMPO. Extensive analysis of the electrochemical properties revealed that the electrophilic heteroatom stabilized the radical as well as alleviated the catholyte degradation. Overall, a careful selection of redox-active species demonstrates great promise in improving the current redox flow battery technology. (C) 2019 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
机译：非水锂离子氧化还原流量（Li-RFBs）最近由于其高工作电压和能量密度而获得了很多兴趣。尽管这些优势，挑战，可行性和效率差，仍然存在实际应用。为了解决这些问题，制备了一系列2,2,6,6-四甲基哌啶1-羟基（Tempo）和Tempo衍生物的阴极水溶液并研究作为氧化还原活性材料。电化学评估表明，与具有整齐节奏的人相比，将极性和电子抽出的取代基引入Tempo以提高速率能力和循环稳定性。对电化学性质的广泛分析表明，亲电杂原子稳定，稳定性，并且减轻了阴极降解。总的来说，精心选择的氧化还原活性物种在改善当前的氧化还原流电池技术方面表现出很大的承诺。 （c）2019年韩国工程化学学会。 elsevier b.v出版。保留所有权利。

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  • 作者

    Ok Byeori; Na Wonjun; Kwon Tae-Hoon; Kwon Young-Wan; Cho Sangho; Hong Soon Man; Lee Albert S.; Lee Jin Hong; Koo Chong Min;

  • 作者单位

    Korea Univ KU KIST Grad Sch Converging Sci &

    Technol Dept Converging Sci &

    Technol 145 Anam Ro Seoul 02841 South Korea;

    Korea Inst Sci &

    Technol Mat Architecturing Res Ctr Nwarangno 14 Gil 5 Seoul 02792 South Korea;

    Korea Inst Sci &

    Technol Mat Architecturing Res Ctr Nwarangno 14 Gil 5 Seoul 02792 South Korea;

    Korea Inst Sci &

    Technol Mat Architecturing Res Ctr Nwarangno 14 Gil 5 Seoul 02792 South Korea;

    Korea Univ KU KIST Grad Sch Converging Sci &

    Technol Dept Converging Sci &

    Technol 145 Anam Ro Seoul 02841 South Korea;

    Korea Univ KU KIST Grad Sch Converging Sci &

    Technol Dept Converging Sci &

    Technol 145 Anam Ro Seoul 02841 South Korea;

    Korea Univ KU KIST Grad Sch Converging Sci &

    Technol Dept Converging Sci &

    Technol 145 Anam Ro Seoul 02841 South Korea;

    Pusan Natl Univ Dept Organ Mat Sci &

    Engn 2 Busandaehak Ro 63beongil Busan 46241 South Korea;

    Korea Univ KU KIST Grad Sch Converging Sci &

    Technol Dept Converging Sci &

    Technol 145 Anam Ro Seoul 02841 South Korea;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学工业;
  • 关键词

    Redox flow battery; TEMPO; Lithium-RFB;

    机译：氧化还原流量;速度;锂 - rfb;

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