Abstract:  To investigate the stability of graphite felt (GF) for all-vanadium redox flow battery(VRB), the electrochemical performance, mass change and morphology of GF were studied by cyclic voltammetry (CV), mass analysis, SEM, and charge-discharge test. The results showed that the GF was oxidized and absorbed the electrolyte as result in causing mass reduction, while the electrochemical performance of the GF basically kept stable. The Coulomb efficiency and energy efficiency respectively were about 96% and 80%.

摘要： 为了探究全钒氧化还原液流电池用石墨毡电极的稳定性，采用循环伏安、质量分析法、SEM和充放电实验研究了石墨毡的电化学性能、质量及形貌的变化。研究结果表明：实验选用的石墨毡电极在实验时间内因氧化而发生失重，同时吸附电解液，使电极质量随时间变化呈先减少后增加的趋势。但是，石墨毡的电化学性能仍然保持稳定，单片电池的能量效率及库仑效率维持在80%与96%左右。

关键词: 石墨毡, 全钒氧化还原液流电池, 电极材料