Regulating interfacial chemistry and kinetic behaviors of F/Mo co-doping Ni-rich layered oxide cathode for long-cycling lithium-ion batteries over-20°C-60°C

作     者：Siqi Guan Lin Tao Pei Tang Ruopian Fang Huize Wu Nan Piao Huicong Yang Guangjian Hu Xin Geng Lixiang Li Baigang An Feng Li 

作者机构：Institute of Energy Materials and Electrochemistry ResearchUniversity of Science and Technology LiaoningAnshan 114051LiaoningChina Shenyang National Laboratory for Materials ScienceInstitute of Metal ResearchChinese Academy of SciencesShenyang 110016LiaoningChina School of Materials Science and EngineeringUniversity of Science and Technology of ChinaShenyang 110016LiaoningChina Shenyang King Power Tech.Co.Ltd.Shenyang 110016LiaoningChina School of Chemical EngineeringThe University of New South WalesSydney 2052NSWAustralia 

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：449-457页

核心收录：

学科分类：0820[工学-石油与天然气工程] 0808[工学-电气工程] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：the financial support from the National Natural Science Foundation of China(51972156,52072378,52102054 and 51927803) the National Key R&D Program of China(2022YFB3803400,2021YFB3800301) the Shenyang Science and Technology Program(22-322-3-19) the Youth Fund of the Education Department of Liaoning Province(LJKQZ20222324) and the Outstanding Youth Fund of University of Science and Technology Liaoning(2023YQ11). 

主　　题：Anion-cation co-doping Wide temperature operation Ni-richlayered cathode Phase transition Surface/interface 

摘      要：Ni-rich layered oxide cathodes have shown promise for high-energy lithium-ion batteries(LIBs)but are usually limited to mild environments because of their rapid performance degradation under extreme temperature conditions(below0°C and above 50 °C).Here,we report the design of F/Mo co-doped LiNi_(0.8)Co_(0.1)iMn_(0.1)O_(2)(FMNCM)cathode for high-performance LIBs from-20 to 60°C.F^(-) doping with high electronegativity into the cathode surface is found to enhance the stability of surface lattice structure and protect the interface from side reactions with the electrolyte by generating a LiF-rich surface layer.Concurrently,the Mo^(6+)doping suppresses phase transition,which blocks Li^(+)/Ni^(2+)mixing,and stabilizes lithium-ion diffusion pathway.Remarkably,the FMNCM cathode demonstrates excellent cycling stability at a high cutoff voltage of 4.4 V,even at 60°C,maintaining 90.6%capacity retention at 3 C after 150 cycles.Additionally,at temperatures as low as-20°C,it retains 77.1%of its room temperature capacity,achieving an impressive 97.5%capacity retention after 500 cycles.Such stable operation under wide temperatures has been further validated in practical Ah-level pouch-cells.This study sheds light on both fundamental mechanisms and practical implications for the design of advanced cathode materials for wide-temperature LIBs,presenting a promising path towards high-energy and long-cycling LIBs with temperatureadaptability.