一种用于高效钾金属电池的高浓度电解质。
A highly concentrated electrolyte for high-efficiency potassium metal batteries.
作者信息
Xu Wenxin, Wang Huwei, Hu Junyang, Zhang Haodong, Zhang Biao, Kang Feiyu, Zhai Dengyun
机构信息
Advanced Materials Institute, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China.
Shenzhen Environmental Science and New Energy Technology Engineering Laboratory, Tsinghua-Berkeley Shenzhen Institute (TBSI), Tsinghua University, Shenzhen 518055, China.
出版信息
Chem Commun (Camb). 2021 Feb 1;57(8):1034-1037. doi: 10.1039/d0cc07266d.
We report a highly concentrated electrolyte consisting of 4 M potassium bis(fluorosulfonyl)imide (KFSI) in diethylene glycol dimethyl ether (DEGDME). This new electrolyte enables stable cycling of K metal anodes with a high CE (over 98% over 400 cycles), and excellent capacity retention (99.7% after 500 cycles) of K||potassium Prussian blue (KPB) batteries.
我们报道了一种高浓度电解质，它由4M双（氟磺酰）亚胺钾（KFSI）溶解于二乙二醇二甲醚（DEGDME）中组成。这种新型电解质能够使钾金属阳极实现稳定循环，库仑效率高（400次循环中超过98%），并且钾||普鲁士蓝钾（KPB）电池具有出色的容量保持率（500次循环后为99.7%）。
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