School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia, 30332, USA; School of Metallurgy and Environment, Central South University, Changsha, 410083, P.R. China.
Adv Mater. 2015 Jan 7;27(1):101-8. doi: 10.1002/adma.201404194. Epub 2014 Nov 3.
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.
碘化锂(LiI)被报道为一种很有前途的锂硫电池电解质添加剂。它在正负极上诱导形成锂离子渗透的保护涂层,防止了阴极多硫化物的溶解和阳极多硫化物的还原。除了提高电池循环稳定性外,LiI 的添加还降低了电池的过电位和电压滞后。