摘要
Lithium–sulfur(Li–S)batteries stand out the energy storage systems because of extremely high energy density(2600 W h Kg−1)and low-cost sulfur cathode.Unfortunately,the sluggish deposition from liquid Li polysulfides(LiPSs)to solid Li2S leads to mild power density and short cycle life.Understanding and regulating Li_(2)S_(2)/Li2S deposition are conceived to be importance to deliver second-plateau capacity in acceptable kinetics,which has the potential to operation Li–S batteries under electrolyte-lean conditions.This perspective aims to summarize the proposed models that can describe the nucleation and propagation of three-dimensional Li_(2)S_(2)/Li2S,as well as affords critical views how electrolyte dictates LiPS conversion from liquid to solid.It hopes to encourage necessary scaffold strategies and electrolyte formulations to further improve energy density and life span of Li–S batteries.
基金
the National Natural Science Foundation of China(grant No.22379121)
Shenzhen Foundation Research Fund(grant No.JCYJ20220530112812028)
Fundamental Research Funds of Shaanxi Key Laboratory of Artificially Structured Functional Materials and Devices(grant No.AFMD-KFJ-22204)
Fundamental Research Funds for the Central Universities(grant No.G2022KY0606)
Open Project of State Key Laboratory of Environment-friendly Energy Materials(grant No.22kfhg05).