Metal–Organic-Framework-Based Gel Polymer Electrolyte with Immobilized Anions To Stabilize a Lithium Anode for a Quasi-Solid-State Lithium–Sulfur Battery

• DOI: 10.1021/acsami.9b03682
• Publication Date: 2019-05-07T21:54:17Z
• Authors: Dian-Dian Han; Zhen-Yu Wang; Gui-Ling Pan; Xue-Ping Gao
• Keywords: Polysulfide; Lithium–sulfur battery

A lithium-sulfur (Li-S) battery is widely regarded as one of the most promising technologies for energy storage because its high theoretical density and cost advantage. However, shuttling soluble polysulfides between cathode anode consequent lithium degradation strongly limit safety electrochemical performance in Li-S battery. Herein, a metal-organic-framework (MOF)-modified gel polymer electrolyte (GPE) employed order to stablize anode. In view abundant pores MOF skeleton, as-prepared GPE not only immobilizes large-size polysulfide anions but also cages into pores, thus facilitating uniform flux Li ions homogeneous deposition. Cooperated with sulfur-carbon composite cathode, MOF-modified exhibits surface morphology dense solid interphase (SEI) film, delivering good cycle stability high-rate capability.