流动电池
储能
氧化还原
电解
电解质
电池(电)
氯
化学
化学工程
可再生能源
材料科学
作者
Singyuk Hou,Long Chen,Xiulin Fan,Xiaotong Fan,Xiao Ji,Boyu Wang,Chunyu Cui,Ji Chen,Chongyin Yang,Wei Wang,Neng Li,Chongmin Wang
标识
DOI:10.1038/s41467-022-28880-x
摘要
Abstract Grid-scale energy storage is essential for reliable electricity transmission and renewable energy integration. Redox flow batteries (RFB) provide affordable and scalable solutions for stationary energy storage. However, most of the current RFB chemistries are based on expensive transition metal ions or synthetic organics. Here, we report a reversible chlorine redox flow battery starting from the electrolysis of aqueous NaCl electrolyte and the as-produced Cl 2 is extracted and stored in the carbon tetrachloride (CCl 4 ) or mineral spirit flow. The immiscibility between the CCl 4 or mineral spirit and NaCl electrolyte enables a membrane-free design with an energy efficiency of >91% at 10 mA/cm 2 and an energy density of 125.7 Wh/L. The chlorine flow battery can meet the stringent price and reliability target for stationary energy storage with the inherently low-cost active materials (~$5/kWh) and the highly reversible Cl 2 /Cl − redox reaction.
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