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首页> 外文期刊>Journal of industrial and engineering chemistry >In-situ observation of the degradation of all-vanadium redox flow batteries with dynamic hydrogen reference electrode under real operation conditions
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In-situ observation of the degradation of all-vanadium redox flow batteries with dynamic hydrogen reference electrode under real operation conditions

机译：原位观察在实际操作条件下具有动态氢参比电极的全钒氧化还原流电池的降解

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摘要

To identify the major degradation mechanism of vanadium redox flow batteries (VRFBs) during cycling under practical operation conditions, an electrochemical impedance analysis is conducted by using dynamic hydrogen electrode (DHE) as a reference electrode. The increased ohmic resistance and charge transfer resistances of the electrodes with cycling are responsible for the performance fade. Spectroscopic and postmortem analysis indicate that the degradation of the carbon felt electrode, which lowers surface conductivity, results in the increases in ohmic and charge transfer resistances. Therefore, the chemical stability of electrode should be improved for achieving more durable VRFBs. (C) 2018 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
机译：为了在实际操作条件下循环期间识别钒氧化还原流量电池（VRFB）的主要劣化机制，通过使用动态氢电极（DHE）作为参比电极进行电化学阻抗分析。 具有循环的电极的增加的欧姆电阻和电荷转移电阻增加了性能褪色的原因。 光谱和后模拟分析表明，碳毡电极的劣化，降低了表面传导性，导致欧姆和电荷转移的增加。 因此，应该改善电极的化学稳定性以实现更耐用的VRFB。 （c）2018年韩国工程和工程化学学会。 elsevier b.v出版。保留所有权利。

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