煅烧温度对钠离子电池P2-Na0.67Ni0.1Fe0.1Mn0.8O2正极材料性能的影响
Effect of calcination temperature on P2-Na0.67Ni0.1Fe0.1Mn0.8O2 cathode material properties of sodium-ion batteries
吴奇峰 1谭磊 1任延杰 1邹康宇 2宁天翔 2李灵均2
作者信息
- 1. 长沙理工大学 能源与动力工程学院,长沙 410114
- 2. 长沙理工大学 材料科学与工程学院,长沙 410114
- 折叠
摘要
层状氧化物材料因其容量高被认为是钠离子电池(SIBs)的候选正极材料,其中,锰基P2型层状氧化物因成本低、稳定性好,是具有发展前景的钠离子电池层状正极材料.本文采用固相烧结法制备一种P2-Na0.67Ni0.1Fe0.1Mn0.8O2正极材料,研究煅烧温度对正极材料性能的影响.结果表明:在875℃下获得的Na0.67Ni0.1Fe0.1Mn0.8O2正极材料具有结晶良好的P2纯相,表现出优异的电化学性能.在1.5～4.3 V的电压范围内,0.05C下所制备正极材料的初始放电容量为232 mA∙h/g,且循环100次后,正极材料的容量保持率为69.5%.
Abstract
Layered oxide materials are considered as candidate cathode materials for sodium-ion batteries(SIBs)due to their high energy density.The manganese-based P2-type is a promising cathode material for SIBs due to its low cost and good stability.In this paper,a P2-Na0.67Ni0.1Fe0.1Mn0.8O2 cathode material was prepared by solid-phase method,the effect of calcination temperature on the performance of cathode materials was investigated.The results show that the P2-Na0.67Ni0.1Fe0.1Mn0.8O2 cathode material obtained at 875℃ has a well-crystallized P2 phase and exhibits excellent electrochemical properties.The initial discharge capacity of the prepared cathode material is 232 mA·h/g at 0.05C in the voltage range of 1.5-4.3 V,and the capacity retention rate is 69.5％after 100 cycles.
关键词
钠离子电池/Ni/Fe/Mn基正极材料/煅烧温度/电化学性能Key words
sodium-ion batteries/Ni/Fe/Mn-based cathode material/calcination temperature/electrochemical properties引用本文复制引用
基金项目
国家自然科学基金资助项目(52204306)
国家自然科学基金资助项目(52374299)
国家自然科学基金资助项目(52304320)
湖南省自然科学基金资助项目(2023JJ10044)
湖南省自然科学基金资助项目(2023JJ40014)
湖南省教育厅科学研究项目(22A0211)
湖南省研究生科研创新项目(CX20230905)
出版年
2024
NETL
NSTL
万方数据