【摘要】 利用自行组装的实验室用钒氧化还原液流单电池,考察了25～45℃范围内温度对钒电池充放电电压、库仑效率、能量效率和自放电性能的影响,并对其影响机理进行了初步研究和讨论。结果表明:随着温度的升高,钒电池的平均库仑效率从25℃时的90.7%降到了45℃的87.4%;而电池的能量效率从25℃的81.6%降到了45℃的78.8%。研究表明:温度对电池自放电性能的影响尤为明显,在25℃时,电池的开路电压保持在0.8V以上的时间为27h,而在45℃则只能保持16h。更多还原

【Abstract】 Average coulombic efficiency,average energy efficiency,self-discharge and charge-discharge process of single vanadium redox flow cell was assembled and tested under temperature from 25—45 ℃.The mechanism of how temperature affecting the performance of VRB was investigated and discussed.Results showed that the average coulombic efficiency(CE) and average energy efficiency(EE) were reduced from 90.7%(25 ℃) to 87.4%(45 ℃) and from 81.6%(25 ℃) to 78.8%(45 ℃),respectively.At 25 ℃,open circuit voltage(OCV) of the cell during self-discharge process can keep 27 h beyond 0.8 V,while OCV can only keep 16 h beyond 0.8 V at 45 ℃更多还原