储能科学与技术2026，Vol.15Issue(1)：22-30,9.DOI:10.19799/j.cnki.2095-4239.2025.0858
Ca和P协同掺杂O3-NaNi1/3Fe1/3Mn1/3O2正极材料的制备与电化学性能
Synthesis and electrochemical performance of Ca and P co-doped O3-NaNi1/3Fe1/3Mn1/3O2 materials
摘要
Abstract
O3-type NaNi1/3Fe1/3Mn1/3O2(NFM)is a promising cathode material due to its relatively high reversible capacity and cost-effectiveness;however,its practical application is limited by pronounced lattice distortion.In this study,a Ca/P dual-site doping strategy was applied to enhance diffusion kinetics and structural stability.Ca2+occupies Na sites and acts as a structural pillar,whereas P5+enters the tetrahedral interstitial sites of the oxygen layers,strengthening TM—O bonding and stabilizing the crystal framework.With this synergistic modification,the optimized composition Na0.86Ni1/3Fe1/3Mn1/3Ca0.09P0.13O2 delivers markedly improved electrochemical performance,retaining 80.6%of its initial capacity after 200 cycles at 1 C,compared with only 43.4%for pristine NFM.关键词
钠离子电池/层状氧化物正极材料/双位点掺杂Key words
sodium-ion battery/layered oxides cathode material/dual-site doping分类
化学化工引用本文复制引用
袁子颖,段振,牛靖瑞,赖飞燕,张晓辉,谢泉文,杨广场..Ca和P协同掺杂O3-NaNi1/3Fe1/3Mn1/3O2正极材料的制备与电化学性能[J].储能科学与技术,2026,15(1):22-30,9.基金项目
贺州学院博士教授科研启动基金(2025BSQD01). （2025BSQD01）
