无机材料学报2026，Vol.41Issue(2)：193-200,8.DOI:10.15541/jim20250085
高镍单晶层状三元正极材料的高熵策略掺杂改性研究
High-entropy Doping Modification of High-nickel Single-crystal Layered Ternary Cathode Material
摘要
Abstract
LiNixCoyMn1-x-yO2(NCM,x≥0.8),a promising cathode material for lithium-ion batteries,possesses high energy density and excellent discharge performance.However,it also appears drawbacks such as severe cation disorder,poor cycling performance and insecurity at high temperatures and high cut-off voltages.In this study,a high-entropy(HE)doping modification strategy was introduced into a high-nickel and low-cobalt LiNi0.86Co0.04Mn0.1O2 cathode material,and a high-nickel single-crystal layered ternary cathode material was synthesized by a high-temperature solid-state reaction method.The results show that at 0.1C(1C=180 mA·g-1)and 25℃,the battery equipped with modified material has a reversible discharge capacity of 197 mAh·g-1 and exhibits excellent discharge performance at high temperatures and high cut-off voltages.At 0.5C,55℃and 4.3 V,the discharge capacity reaches 281 mAh·g-1,while at 0.5C,25℃and 4.5 V,the discharge capacity is as high as 194 mAh·g-1.This material has a good layered structure with a uniform arrangement of nanoscale primary particles at microscale and a smaller total impedance.This work significantly improves cycling performance and safety of high-nickel ternary cathode materials at high temperatures and high cut-off voltages,providing a good modification method for the cobalt-free,high-nickel and practical application of ternary materials.关键词
高熵/单晶/高镍低钴/三元正极材料Key words
high-entropy/single crystal/high nickel and low cobalt/ternary cathode material分类
化学化工引用本文复制引用
侯佳兵,胡强,崔久治,黄云迪,王心蕊,刘兴泉..高镍单晶层状三元正极材料的高熵策略掺杂改性研究[J].无机材料学报,2026,41(2):193-200,8.基金项目
四川省科技支撑项目(22ZC0248)Sichuan Provincial Science and Technology Support Project(22ZC0248) （22ZC0248）
