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首页> 外文期刊>International Journal of Electrochemical Science >Carbon Felts Electrode Treated in Different Weak Acid Solutions through Electrochemical Oxidation Method for All Vanadium Redox Flow Battery
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Carbon Felts Electrode Treated in Different Weak Acid Solutions through Electrochemical Oxidation Method for All Vanadium Redox Flow Battery

机译：钒氧化还原液流电池电化学氧化法在不同弱酸溶液中处理的碳毡电极

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摘要

Electrochemical oxidation method in different weak acid (citric acid, oxalic acid and ethylene diaminetetraacetic acid) solutions was used to modify the carbon felts (CFs) electrode for all vanadium redoxflow battery (VRFB). The CFs electrode was investigated through scanning electron microscopy(SEM), X-ray photoelectron spectroscopy (XPS), cyclic voltammetric (CV) and linear sweepvoltammetry (LSV). The electrochemical activity of the CFs was improved with little morphologieschanging after it was treated in the weak solutions. Single cell was assembled to test the batteryperformances and the energy efficiency (EE) increases from 81.4% to 85.4% after the CFs wasoxidized in ethylene diamine tetraacetic acid for 2 h. The enhanced electrochemical activity wasascribed to the increase of oxygen content on the surface of the treated CFs. The treated CFs aresupposed to be used in the VRFB and improve the storage efficiency.
机译：采用电化学氧化方法在不同的弱酸（柠檬酸，草酸和乙二胺四乙酸）溶液中对所有钒氧化还原液流电池（VRFB）的碳毡（CFs）电极进行改性。通过扫描电子显微镜（SEM），X射线光电子能谱（XPS），循环伏安法（CV）和线性扫描伏安法（LSV）研究了CFs电极。在弱溶液中处理后，CF的电化学活性得到改善，几乎没有形态变化。将CFs在乙二胺四乙酸中氧化2小时后，组装单个电池以测试电池性能，并且能量效率（EE）从81.4％增加到85.4％。增强的电化学活性归因于处理过的CF表面氧含量的增加。处理过的CF应该用于VRFB中并提高存储效率。

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