钒液流电池在不同温度下的充放电特性

摘要

Influence of the temperature on the polarization curve, cyclic efficiency, charge-discharge capacity and self-discharge performance of vanadium redox flow battery was studied in temperature range 15℃~35℃ by using a 10-cell stack, and the mechanism was analyzed. The results show that, in the process of temperature rising, the current efficiency decreases, and voltage efficiency, charge-discharge capacity and self-discharge rate all gradually increase. In order to ensure stable operation of the vanadium battery, the temperature should be strictly controlled in the actual application.%利用10电池电堆考查了在15~35℃范围内温度对钒电池极化曲线、循环效率、充放电容量以及自放电性能的影响，并进行了机理分析，测试结果表明，在温度逐渐升高的过程中，除电流效率逐渐降低外，电压效率、充放电容量、自放电速率均逐渐升高，在实际应用过程中，应严格对温度进行控制以保证钒电池系统的稳定运行。