Lithium iodide as a promising electrolyte additive for lithium-sulfur batteries: mechanisms of performance enhancement.
Adv Mater, 2015/1/07;27(1):101-8.
Wu F[1], Lee JT, Nitta N, Kim H, Borodin O, Yushin G
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PMID: 25367318DOI: 10.1002/adma.201404194
Impact factor: 32.086
Abstract
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.
Keywords: Li/S; cathode; lithium iodide; lithium sulfide; sulfur
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