Electrolyte engineering and interphase chemistry toward high-performance nickel-rich cathodes:Progress and perspectives  

作　　者：Shangjuan Yang Ke Yang Jinshuo Mi Shaoke Guo Xufei An Hai Su Yanbing He 

机构地区：[1]Shenzhen All-Solid-State Lithium Battery Electrolyte Engineering Research Center,Institute of Materials Research(IMR),Tsinghua Shenzhen International Graduate School,Tsinghua University,Shenzhen,518055,China [2]School of Materials Science and Engineering,Tsinghua University,Beijing,100084,China

出　　处：《Materials Reports(Energy)》2025年第1期19-31,共13页材料导报(能源)(英文)

基　　金：supported by the National Key Research and Development Program of China(2021YFF0500600);National Natural Science Foundation of China(Nos.U2001220,52203298 and 523B2022);National Science Fund for Distinguished Young Scholars(No.52325206);Shenzhen Technical Plan Project(Nos.RCJC20200714114436091,JCYJ20220530143012027,JCYJ20220818101003008 and JCYJ20220818101003007);Tsinghua Shenzhen International Graduate School-Shenzhen Pengrui Young Faculty Program of Shenzhen Pengrui Foundation(No.SZPR2023006).

摘　　要：Nickel(Ni)-rich layered oxides have drawn great attention as cathode for lithium batteries due to their high capacity,high working voltage and competitive cost.Unfortunately,the operation of Ni-rich cathodes suffers from the notorious structural degradation and interfacial side reactions with electrolytes and thus incurs premature failure,especially at high charge cut-off voltages(≥4.4 V).For this,various structural and interphase regulation strategies(such as coating modification,element doping,and electrolyte engineering)are developed to enhance the cycling survivability of Ni-rich cathodes.Among them,electrolyte engineering by changing solvation structure and introducing additives has been considered an efficient method for constructing robust cathode-electrolyte interphases(CEI),inhibiting the formation of harmful species(such as HF and H_(2)O)or restraining the dissolution of transition metal ions.However,there is still an absence of systematic guidelines for selecting and designing competitive electrolyte systems for Ni-rich layered cathodes.In this review,we comprehensively summarize the recent research progress on electrolyte engineering for Ni-rich layered cathodes according to their working mechanisms.Moreover,we propose future perspectives of improving the electrolyte performance,which will provide new insights for designing novel electrolytes toward high-performance Ni-rich layered cathodes.

关 键 词：Ni-rich cathodes Solvation structure regulation Electrolyte additives Cathode-electrolyte interphase High charging cut-off voltage 

分 类 号：TM912[电气工程—电力电子与电力传动]