文献类型：期刊文献

英文题名：High-energy and low-cost membrane-free chlorine flow battery

作者：Hou, Singyuk[1];Chen, Long[1,2];Fan, Xiulin[1];Fan, Xiaotong[3];Ji, Xiao[1];Wang, Boyu[1];Cui, Chunyu[1];Chen, Ji[1];Yang, Chongyin[1];Wang, Wei[4];Li, Chunzhong[2];Wang, Chunsheng[1]

机构：[1]Univ Maryland, Dept Chem & Biomol Engn, College Pk, MD 20742 USA;[2]East China Univ Sci & Technol, Dept Chem Engn, Shanghai, Peoples R China;[3]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai, Peoples R China;[4]Pacific Northwest Natl Lab, Energy & Environm Directorate, Richland, WA 99352 USA

年份：2022

卷号：13

期号：1

外文期刊名：NATURE COMMUNICATIONS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000767892300001)】；

基金：This work was supported by the US Department of Energy ARPA-E Grant DEAR0000389.

语种：英文

摘要：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 asproduced Cl-2 is extracted and stored in the carbon tetrachloride (CCl4) or mineral spirit flow. The immiscibility between the CCl4 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.