电源技术2026，Vol.50Issue(1)：56-64,9.DOI:10.3969/j.issn.1002-087X.2026.01.007
Mg-Ti共掺杂对高镍三元正极材料性能的影响
Effect of Mg-Ti co-doping on performance for Ni-rich cathode materials
摘要
Abstract
To enhance the cycling performance of Ni-rich cathode materials,a series of Ni-rich cath-ode materials co-doped with Mg and Ti in different proportions were synthesized via a co-precipitation combined method with high-temperature solid-phase method.The results show that Mg-Ti co-doping can inhibit the volume shrinkage caused by lattice deformation,enhance the struc-tural stability of Ni-rich cathode materials,thereby suppressing the occurrence of irreversible phase transitions during cycling and reducing the formation of microcracks.The Ni-rich cathode material modified by Mg-Ti co-doping has excellent cycle life and rate capability.When the doping ratio of Mg-Ti is 0.3％,the capacity retention rate of the Ni-rich material after 100 cycles at 1 C between 2.75～4.3 V is 89.14％.The discharge specific capacities at 3 C and 5 C rates are 178.73 and 174.35 mAh/g,respectively.关键词
锂离子电池/高镍三元正极材料/Mg-Ti掺杂/循环稳定性/微裂纹Key words
Li-ion battery/Ni-rich cathode materials/Mg-Ti co-doping strategy/cycle stability/mi-crocracks分类
信息技术与安全科学引用本文复制引用
高永恩,侯栓弟..Mg-Ti共掺杂对高镍三元正极材料性能的影响[J].电源技术,2026,50(1):56-64,9.基金项目
中国石化科技项目(125039) （125039）
