Communication—Trace Montmorillonite Electrolyte Additive Producing Stable Lithium-Sulfur Batteries
Xin LiuTianle KongJie QuChao WangChao Lai
Abstract
In this paper, montmorillonite is used as an electrolyte additive to enhance the discharge and cycling performance of lithium-sulfur (Li-S) batteries. It is demonstrated that montmorillonite participates in the formation of a protective layer on the surface of lithium anode, which can effectively suppress shuttle effect and overcharge, leading to great enhancement of the cycle life of Li-S batteries. Even at a high current density of 1600 mA g−1 after 300 cycles, a high reversible capacity of 351 mAh g−1, as well as high coulombic efficiency, can still be obtained.
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