流动电池
电池(电)
储能
铬
流量(数学)
电流密度
氧化还原
材料科学
能量密度
工作(物理)
电气工程
核工程
冶金
工程类
机械
机械工程
热力学
工程物理
物理
功率(物理)
量子力学
作者
Y.K. Zeng,Xuelong Zhou,Liang An,Lei Wei,T.S. Zhao
标识
DOI:10.1016/j.jpowsour.2016.05.138
摘要
Unlike conventional iron-chromium redox flow batteries (ICRFBs) with a flow-through cell structure, in this work a high-performance ICRFB featuring a flow-field cell structure is developed. It is found that the present flow-field structured ICRFB reaches an energy efficiency of 76.3% with a current density of 120 mA cm−2 at 25 °C. The energy efficiency can be as high as 79.6% with an elevated current density of 200 mA cm−2 at 65 °C, a record performance of the ICRFB in the existing literature. In addition, it is demonstrated that the energy efficiency of the battery is stable during the cycle test, and that the capacity decay rate of the battery is 0.6% per cycle. More excitingly, the high performance of the flow-field structured battery significantly lowers the capital cost at $137.6 kWh−1, which is 28.2% lower than that of the conventional ICRFB for 8-h energy storage.
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