Surface engineering of Li-and Mn-rich layered oxides for superior Li-ion battery

作     者：Lu-Xiang Ma Tian-Dong Chen Chun-Xi Hai Sheng-De Dong Xin He Qi Xu Hang Feng AXin Ji-Tao Chen Yuan Zhou 

作者机构：College of Materials and Chemistry and Chemical EngineeringChengdu University of TechnologyChendu 610000China Qinghai Building and Materials Research Co.LtdXining 810000China Beijing National Laboratory for Molecular SciencesCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China 

出 版 物：《Tungsten》 (钨科技（英文）)

年 卷 期：2024年第6卷第1期

页      面：259-268页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：financial support from the National Key Research and Development Program of China (Grant No.2021YFB2400401) Project of Development Fund of Key Laboratory of Green Plateau and Ecological Community of Qinghai Province (Grant No.SL-2020-019) 

主　　题：LiPAA interphase layer Interface side reaction Cathode cracks Capacity and voltage fading suppression Liand Mn-rich cathode 

摘      要：The Li-and Mn-rich layered oxides(R-LNCM)are considered as promising cathode materials for high-energy density lithium-ion batteries(LIBs).However,the interface side reaction aggravates the voltage and capacity fading between cathode material and electrolyte at high voltage,which severely hinders the practical application of LIB ***,lithium polyacrylate(LiPAA)as the binder and coating agent is applied to suppress the voltage and capacity fading of R-LNCM *** flexible LiPAA layers with high elasticity are capable of impeding cathode cracks on the particle surface via mechanical stress ***,superior voltage and capacity fading suppression on R-LNCM electrode is finally *** a result,LiPAA-R-LNCM cathode exhibits a remarkable specific capacity of 186 mA·h·g^(-1)with~73%retention at 1℃after ***,the corresponding average discharge potential is maintained to~3.1 V with only~0.4 V falling.