title: Lithium iodide as a promising electrolyte additive for lithium-sulfur batteries: mechanisms of performance enhancement.
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.
authors.affiliation: 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.
authors.forename: Feixiang
authors.initials: F
authors.lastname: Wu
authors.forename: Jung Tae
authors.initials: JT
authors.lastname: Lee
authors.forename: Naoki
authors.initials: N
authors.lastname: Nitta
authors.forename: Hyea
authors.initials: H
authors.lastname: Kim
authors.forename: Oleg
authors.initials: O
authors.lastname: Borodin
authors.forename: Gleb
authors.initials: G
authors.lastname: Yushin
keywords: Li/S; cathode; lithium iodide; lithium sulfide; sulfur