Open AccessEffects of Catalysis and Separator Functionalization on High‐Energy Lithium–Sulfur Batteries: A Complete Review
Author(s) -
Aslam Muhammad Kashif,
Jamil Sidra,
Hussain Shahid,
Xu Maowen
Publication year - 2023
Publication title -
energy and environmental materials
Language(s) - English
Resource type - Journals
ISSN - 2575-0356
DOI - 10.1002/eem2.12420
Subject(s) - polysulfide , separator (oil production) , surface modification , faraday efficiency , passivation , anode , catalysis , lithium–sulfur battery , materials science , energy storage , sulfur , nanotechnology , chemical engineering , chemistry , electrochemistry , layer (electronics) , organic chemistry , electrode , engineering , metallurgy , electrolyte , power (physics) , physics , quantum mechanics , thermodynamics
Lithium–sulfur (Li‐S) batteries have the advantages of high theoretical specific capacity (1675 mAh g −1 ), rich sulfur resources, low production cost, and friendly environment, which makes it one of the most promising next‐generation rechargeable energy storage devices. However, the “shuttle effect” of polysulfide results in the passivation of metal lithium anode, the decrease of battery capacity and coulombic efficiency, and the deterioration of cycle stability. To realize the commercialization of Li‐S batteries, its serious “shuttle effect” needs to be suppress. The commercial separators are ineffective to suppress this effect because of its large pore size. Therefore, it is an effective strategy to modify the separator surface and introduce functional modified layer. In addition to the blocking strategy, the catalysis of polysulfide conversion reaction is also an important factor hindering the migration of polysulfides. In this review, the principles of separator modification, functionalization, and catalysis in Li‐S batteries are reviewed. Furthermore, the research trend of separator functionalization and polysulfide catalysis in the future is prospected.