化学工程2025，Vol.53Issue(4)：36-42,7.DOI:10.3969/j.issn.1005-9954.2025.04.007
Al掺杂修饰LiNi0.8Co0.1Mn0.1-xAlxO2正极材料的合成及电化学性能
Synthesis and electrochemical properties of Al-doped modified LiNi0.8Co0.1Mn0.1-xAlxO2 cathode materials
摘要
Abstract
Using lithium acetate,nickel acetate,cobalt acetate,manganese acetate and aluminum acetate as raw materials and citric acid as complexing agent,LiNi0.8Co0.1Mn0.1-xAlxO2 materials were firstly synthesized using the sol-gel method,and LiNi0.8Co0.1Mn0.1-xAlxO2 materials with different amount of Al doping were obtained by varying the dosage of aluminum acetate.The sample were characterized by XRD,SEM and EDS.The results show that LiNi0.8Co0.1Mn0.1-xAlxO2 with different amount of Al doping all has α-NaFeO2 layered structure,which causes distortion of the crystal lattice.Al3+doping can broaden the channel for lithium ion diffusion,and the layered structure is more stable and ordered,when Al doping amount is 0.03.The electrochemical test results show that the first discharge specific capacity of NCM811-Al0.03 at 1C reaches 146.02 mA·h/g,and the capacity retention rate after 200 cycles is 82.3％,with better electrochemical reversibility and lower charge transfer resistance.关键词
锂离子电池/正极材料/高镍三元锂材料/铝掺杂/电化学性能Key words
lithium-ion battery/cathode material/high-nickel ternary lithium materials/Al doping/electrochemical property分类
化学化工引用本文复制引用
冯国威,汪洋,王冰,唐立丹,刘亮,齐锦刚..Al掺杂修饰LiNi0.8Co0.1Mn0.1-xAlxO2正极材料的合成及电化学性能[J].化学工程,2025,53(4):36-42,7.基金项目
辽宁省教育科研资助项目(JJL201915409) （JJL201915409）
