Omni-functional simultaneous interfacial treatment for enhancing stability and outgassing suppression of lithium-ion batteries

作     者：Youbean Lee Chanjoo Park Kyoungmin Min Kwangjin Park 

作者机构：Department of Mechanical EngineeringGachon UniversityGyeonggi-do 13120Republic of Korea Department of Battery EngineeringGachon UniversityGyeonggi-do 13120Republic of Korea School of Mechanical EngineeringSoongsil UniversitySeoul 06978Republic of Korea 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2024年第94卷第7期

页      面：677-687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）] 0703[理学-化学] 

基　　金：supported by the National Research Foundation of Korea(NRF)grant funded by the Korea government(MSIP)(2021R1F1A1055946) SolarEdge Technologies Korea(GCU-202203070002) 

主　　题：Lithium-ion batteries Ni-rich NCM Acid solvent evaporation LiNO_(3)-derived coating Gasevolution 

摘      要：Ni-rich layered oxides in lithium-ion batteries have problems with gas generation and electrochemical performance reduction due to residual lithium s reaction on the surface with the *** address this issue,in this study,the Acid solvent evaporation(AsE)method has been proposed as a potential method to remove residual lithium while promoting the formation of a new LiNO_(3)-derived coating layer on the cathode *** reduction of residual lithium using the ASE method and the construction of a LiNO_(3)-derived coating layer suppresses gas evolution caused by the side effects of the electrolyte,improves electrochemical performance,and improves thermal stability by facilitating the smooth movement of lithium ***,the structural stability and resistance change due to the LiNO_(3)-derived coating layer effects is guaranteed through cycling and DCIR of the pouch *** a result,compared to Pristine,the capacity retention of coin cells increased by 8%after 100 cycles,and pouch cells increased by 25%after 160 *** addition,after cycling the pouch cell,CO_(2) gas has significantly reduced by about 30%compared to Pristine using gas *** ASE method effectively forms a robust LiNO_(3)-derived coating layer on the cathode active material,which helps minimize electrolyte reactivity,suppress ,CO_(2) emissions,enhance surface structure stability,improve thermal stability,and improveoverallbatteryperformance.