Abstract
AbstractElectrolyte additives have been widely used to solve critical problems of electrodes and electrolytes in various rechargeable batteries. However, due to the lack of well‐directed strategy, the selection for additives have consumed considerable efforts of researchers. In this study, a diversity‐driven electrolyte additive of 5‐bromo‐2‐(difluoro(3,4,5‐trifluorophenoxy)methyl)‐1,3‐difluorobenzene (BDTMD) is directed synthesized, two different substituent groups are designed in the structure. With this newly‐formulated electrolyte, the overpotential during the charging process of Li−CO2 cells can be reduced to 3.8 V without any catalyst. Li metal electrode also shows a stable solid electrolyte interface layer and long cycling life of 1600 h. Based on the synergistic effect between F and Br, this study demonstrates an efficiently and well‐directed strategy to synthesis electrolyte additives.
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