Recent progress on electrolyte functional additives for protection of nickel-rich layered oxide cathode materials
Recent progress on electrolyte functional additives for protection of nickel-rich layered oxide cathode materials
复制标题
DOI：
10.1016/j.jechem.2021.05.049
复制
发表时间：
2022
影响因子：
13.1
通讯作者：
Cui Guanglei
中科院分区：
文献类型：
--
作者：
Li Longshan;Wang Dingming;Xu Gaojie;Zhou Qian;Ma Jun;Zhang Jianjun;Du Aobing;Cui Zili;Zhou Xinhong;Cui Guanglei
In advantages of their high capacity and high operating voltage,the nickel (Ni)-rich layered transition metal oxide cathode materials (LiNi_xCo_yMn_zO_2 (NCMxyz,x + y + z = 1,x ≥ 0.5) and LiNi_(0.8)Co_(0.15)Al_(0.05)O_2 (NCA)) have been arousing great interests to improve the energy density of LIBs.However,these Nirich cathodes always suffer from rapid capacity degradation induced by unstable cathode-electrolyte interphase (CEI) layer and destruction of bulk crystal structure.Therefore,varied electrode/electrolyte interface engineering strategies (such as electrolyte formulation,material coating or doping) have been developed for Ni-rich cathodes protection.Among them,developing electrolyte functional additives has been proven to be a simple,effective,and economic method to improve the cycling stability of Nirich cathodes.This is achieved by removing unfavorable species (such as HF,H_2O) or constructing a stable and protective CEI layer against unfavorable reactive species (such as HF,H_2O).Herein,this review mainly introduces the varied classes of electrolyte functional additives and their working mechanism for interfacial engineering of Ni-rich cathodes.Especially,key favorable species for stabilizing CEI layer are summarized.More importantly,we put forward perspectives for screening and customizing ideal functional additives for high performance Ni-rich cathodes based LIBs.
