Influence of organic additives on electrochemical properties of the positive electrolyte for all-vanadium redox flow battery
Influence of organic additives on electrochemical properties of the positive electrolyte for all-vanadium redox flow battery
复制标题
有机添加剂对全钒氧化还原液流电池正极电解液电化学性能的影响
DOI：
10.1016/j.electacta.2012.06.065
复制
发表时间：
2012-09
影响因子：
6.6
通讯作者：
6. Xiaojuan Wu, Suqin Liu, Nanfang Wang, Sui Peng
中科院分区：
文献类型：
--
作者：
6. Xiaojuan Wu, Suqin Liu, Nanfang Wang, Sui Peng
采用肌醇和植酸作为全钒液流电池正极电解液的有机添加剂，以提高电池的稳定性和电化学可逆性。肌醇和植酸添加剂均能提高V（V）电解质的热稳定性。循环伏安（CV）、稳态极化曲线和电化学阻抗谱（EIS）测试结果表明，添加剂后电解液的电化学活性较空白电解液有所提高。V（IV）物种与肌醇的扩散系数从0.71-1.16×10− 6增加到3.11-5.15×10− 6cm 2 s − 1，交换电流密度从2.8×10− 3增加到11.7×10−3Acm−2。电化学测试结果表明，添加有机添加剂的正极电解液具有较好的循环稳定性。采用肌醇作为添加剂的正极电解液的VRFB表现出优异的充放电行为，在30 mAcm −2的电流密度下，平均能量效率为81.5%。紫外-可见光谱证实，添加肌醇和植酸的V（V）电解液中没有形成新的物质。
Inositol and phytic acid have been employed as organic additives of the positive electrolyte for all-vanadium redox flow battery (VRFB) to improve its stability and electrochemical reversibility. Thermal stability of the V(V) electrolyte could be improved by both inositol and phytic acid additives. The results of cyclic voltammetry (CV), steady polarization curve and electrochemical impedance spectroscopy (EIS) show that the electrochemical activity of the electrolyte with additives is improved compared to the blank one. The diffusion coefficient of V(IV) species with inositol has been increased from 0.71–1.16×10−6to 3.11–5.15×10−6cm2s−1and the exchange current density was raised from 2.8×10−3to 11.7×10−3Acm−2. Moreover, electrochemical results suggest that the positive electrolytes with organic additives have better cycling stability. The VRFB employing positive electrolyte with inositol as additive exhibits excellent charge–discharge behavior with an average energy efficiency of 81.5% at a current density of 30mAcm−2. The UV–visible spectroscopy confirms that new substances in V(V) electrolyte are not formed with both inositol and phytic acid additives.
登录
查看更多内容
影响因子：
--
作者：
M. Skyllas-Kazacos;Christina Peng;M. Cheng
通讯作者：
M. Skyllas-Kazacos;Christina Peng;M. Cheng
有机添加剂对钒氧化还原电池正极电解液的影响
影响因子：
6.6
作者：
Sha Li;Kelong Huang;Suqin Liu;Dong Fang;Xiongwei Wu;Dan Lu;Tao Wu
通讯作者：
Tao Wu
Ir改性碳毡作为全钒氧化还原液流电池正极的研究
影响因子：
6.6
作者：
Wang, W. H.;Wang, X. D.
通讯作者：
Wang, X. D.
影响因子：
9.2
作者：
F. Rahman;M. Skyllas-Kazacos
通讯作者：
F. Rahman;M. Skyllas-Kazacos
氧化还原液流电池中Mn(II)/Mn(III)对电极过程的研究
影响因子：
6.6
作者：
通讯作者：
--