Lithium Iodide as a Promising Electrolyte Additive for Lithium-Sulfur Batteries: Mechanisms of Performance Enhancement
Lithium Iodide as a Promising Electrolyte Additive for Lithium-Sulfur Batteries: Mechanisms of Performance Enhancement
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DOI：
10.1002/adma.201404194
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发表时间：
2015-01-01
影响因子：
29.4
通讯作者：
Yushin, Gleb
中科院分区：
文献类型：
--
作者：
Wu, Feixiang;Lee, Jung Tae;Yushin, Gleb
碘化锂（LiI）是锂硫电池电解液添加剂的一种。它诱导在正极和负极上形成Li离子可渗透的保护涂层，这防止了阴极上多硫化物的溶解和阳极上多硫化物的还原。除了增强电池周期稳定性之外，LiI的添加还降低了电池过电位和电压滞后。
Lithium Iodide (LiI) is reported as a promising electrolyte additive for lithium-sulfur batteries. It induces formation of Li-ion-permeable protective coatings on both positive and negative electrodes, which prevent the dissolution of polysulfides on the cathode and reduction of polysulfides on the anode. In addition to enhancing the cell cycle stability, LiI addition also decreases the cell overpotential and voltage hysteresis.