首页|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

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

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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%.
Effect of calcination temperature on P2-Na0.67Ni0.1Fe0.1Mn0.8O2 cathode material properties of sodium-ion batteries
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.

sodium-ion batteriesNi/Fe/Mn-based cathode materialcalcination temperatureelectrochemical properties

吴奇峰、谭磊、任延杰、邹康宇、宁天翔、李灵均

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长沙理工大学 能源与动力工程学院,长沙 410114

长沙理工大学 材料科学与工程学院,长沙 410114

钠离子电池 Ni/Fe/Mn基正极材料 煅烧温度 电化学性能

国家自然科学基金资助项目国家自然科学基金资助项目国家自然科学基金资助项目湖南省自然科学基金资助项目湖南省自然科学基金资助项目湖南省教育厅科学研究项目湖南省研究生科研创新项目

5220430652374299523043202023JJ100442023JJ4001422A0211CX20230905

2024

10.11817/j.ysxb.1004.0609.2023-44607

中国有色金属学报
中国有色金属学会

中国有色金属学报

CSTPCD北大核心
影响因子：1.108
ISSN：1004-0609
年,卷(期)：2024.34(6)