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-AQPSH_(2))、2,6-二氧丙烷磺酸基蒽醌(2,6-AQDPSH_(2))和1-羟基-2-氧丙烷磺酸基蒽醌(1,4-AQPSH_(2))]。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-AQPSH_(2))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/cm^(2)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-AQPSH_(2)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。
In this study,three types of alkyl sulfonate anthraquinones,1-hydroxy-2-oxopropane sulfonic acid anthraquinone(1,2-AQPSH_(2)),2,6-dioxopropane sulfonic acid anthraquinone(2,6-AQDPSH_(2)),and 1-hydroxy-2-oxopropane sulfonic acid anthraquinone(1,4-AQPSH_(2)),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-AQPSH_(2) shows promise as an anolyte for neutral water-based organic redox flow batteries.
作者
吕腾
叶子祥
李泾
储富强
林本才
LYU Teng;YE Zixiang;LI Jing;CHU Fuqiang;LIN Bencai(School of Materials Science and Engineering,Changzhou University;Jiangsu Collaborative Innovation Center of Photovolatic Science and Engineering,Changzhou University,Changzhou 213164,Jiangsu,China)
出处
《储能科学与技术》
CAS
CSCD
北大核心
2021年第4期1317-1324,共8页
Energy Storage Science and Technology
基金
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)。
