储能科学与技术 ›› 2021, Vol. 10 ›› Issue (4): 1317-1324.doi: 10.19799/j.cnki.2095-4239.2021.0025

• 储能材料与器件 • 上一篇    下一篇

烷基磺酸蒽醌电解质的合成及其在液流电池中的应用

吕腾1(), 叶子祥1, 李泾1, 储富强1, 林本才1,2()   

  1. 1.常州大学材料科学与工程学院
    2.江苏省光伏科学与工程协同创新中心,江苏 常州 213164
  • 收稿日期:2021-01-15 修回日期:2021-03-03 出版日期:2021-07-05 发布日期:2021-06-25
  • 通讯作者: 林本才 E-mail:2972403627@qq.com;linbencai@cczu.edu.cn
  • 作者简介:吕腾(1996—),男,硕士研究生,主要研究液流电池,E-mail:2972403627@qq.com
  • 基金资助:
    国家自然科学基金面上项目(51973022);国家重点研发计划项目(2018YFB1500304);江苏省高等学校自然科学研究重大项目(18KJA430004);常州市国际合作项目(CZ20200034)

Synthesis of anolyte based on alkyl sulfonate anthraquinone and its application in flow batteries

Teng LYU1(), Zixiang YE1, Jing LI1, Fuqiang CHU1, Bencai LIN1,2()   

  1. 1.School of Materials Science and Engineering, Changzhou University
    2.Jiangsu Collaborative Innovation Center of Photovolatic Science and Engineering, Changzhou University, Changzhou 213164, Jiangsu, China
  • Received:2021-01-15 Revised:2021-03-03 Online:2021-07-05 Published:2021-06-25
  • Contact: Bencai LIN E-mail:2972403627@qq.com;linbencai@cczu.edu.cn

摘要:

分别以1, 2 -二羟基蒽醌、2, 6-二羟基蒽醌和1, 4-二羟基蒽为原料与丙烷磺内酯反应,合成了3种烷基磺酸基蒽醌[1-羟基-2-氧丙烷磺酸基蒽醌(1, 2-AQPSH2)、2, 6-二氧丙烷磺酸基蒽醌(2, 6-AQDPSH2)和1-羟基-2-氧丙烷磺酸基蒽醌(1, 4-AQPSH2)]。研究了3种烷基磺酸基蒽醌在1 mol/L NaCl水溶液中的溶解性及其在中性条件下的氧化还原性质。选取溶解性最好的烷基磺酸基蒽醌(1, 4-AQPSH2) 作为阳极电解质,与2, 2, 6, 6-四甲基哌啶醇(4-OH-TEMPO)阴极电解液搭配使用,以 Nafion212作为离子交换膜,组装了中性水系有机氧化还原液流电池单电池,该液流电池的开路电压约为1.0 V,在60 mA/cm2电流密度下进行循环性能测试,电池的能量密度为68%,库仑效率为97%,电压效率为69%,经过75个充放电循环测试后电池的放电容量没有明显的降低,表明1, 4-AQPSH2在该体系下运行具有良好的稳定性。这些结果表明1, 4-AQPSH2作为中性水系有机氧化还原液流电池阳极电解液具有很好的应用前景。

关键词: 水系有机液流电池, 蒽醌, 丙烷磺内酯, 溶解性, 阳极电解质

Abstract:

In this study, three types of alkyl sulfonate anthraquinones, (1-hydroxy-2-oxopropane sulfonic acid anthraquinone (1,2-AQPSH2), 2,6-dioxopropane sulfonic acid anthraquinone (2,6-AQDPSH2), and 1-hydroxy-2-oxopropane sulfonic acid anthraquinone (1,4-AQPSH2), were synthesized using propane sultone from 1,2-dihydroxyanthraquinone, 2,6-dihydroxyanthraquinone and 1,4-dihydroxyanthracene, respectively. Solubility and the oxidation-reduction properties of these three anthraquinones in 1 mol/L NaCl aqueous solution under neutral conditions were studied in detail. 1,4-AQPSH2 was selected and used as an anodolyte, 2,2,6,6-tetramethylpiperidinol (4-OH-TEMPO) was used as a catholyte, and Nafion 212 was used as an ion-exchange membrane to assemble a neutral water-based organic redox flow battery cell. Open circuit voltage of the flow battery was about 1.0 V; at a current density of 60 mA·cm-2, the Coulombic efficiency, energy efficiency, and voltage efficiency of the cell were 97%, 68%, and 69%, respectively. At a current density of 60 mA·cm-2, there was no substantial reduction in the discharge capacity of the battery after 75 charging and discharging cycles. These results demonstrate that 1,4-AQPSH2 shows promise as an anolyte for neutral water-based organic redox flow batteries.

Key words: flow batteries, anthraquinone, propane sultone, solubility, anolyte

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