天津工业大学学报2026，Vol.45Issue(2)：59-66,8.DOI:10.3969/j.issn.1671-024x.2026.02.008
Cu-Fe-Mn层状氧化物钠离子电池正极材料前驱体的共沉淀制备及其电化学性能
Co-precipitation synthesis of precursors of Cu-Fe-Mn based layered oxides and their electrochemical properties as cathode materials for sodium-ion batteries
摘要
Abstract
In order to overcome the shortcomings of the traditional solid-phase synthesis method,the ammonia-alkali method and the oxalate coprecipitation methods were used to prepare the precursors of the Cu-Fe-Mn based cathode material for sodium-ion batteries.Subsequently,O3-type Na0.9[Cu0.22Fe0.30Mn0.48]O2 cathode materials were synthesized using these different precursors.The morphological structures and electrochemical properties of the precursors as well as the corresponding cathode materials prepared by various methods were systematically analyzed.The results showed that the primary particle sizes of the precursors prepared by two different methods were both in the range of also about 100-200 nm,with a uniform distribution.The layered oxide materials pre-pared from the two precursors were all flake crystals.The layered oxide prepared by the ammonia-alkali method has a particle size of approximately 2 μm,while the cathode material obtained via the oxalate precipitation method has a particle size of about 5-6 μm.Both of them possess an O3-type layered structure,with interlayer spacing of 0.333 29 nm and 0.327 34 nm respectively for the sodium layers.The first-cycle discharge specific capacities of the oxides obtained by the ammonia-alkali method and oxalate precipitation method were 90.50 and 90.04 mA·h/g at 0.1 C,respectively.After 50 cycles,the specific capacities were 89.26 and 80.92 mA·h/g,with capacity retentions of 98.63%and 89.87%,respectively.关键词
共沉淀法/Cu-Fe-Mn 层状氧化物前驱体/电化学性能/钠离子电池Key words
co-precipitation method/Cu-Fe-Mn layered oxide precursor/electrochemical performance/sodium-ion battery分类
化学化工引用本文复制引用
艾常春,张弓,王梓涵,李芳欣,杨之胺,薛永萍..Cu-Fe-Mn层状氧化物钠离子电池正极材料前驱体的共沉淀制备及其电化学性能[J].天津工业大学学报,2026,45(2):59-66,8.基金项目
国家自然科学基金项目(22309139) （22309139）
湖北省三峡实验室开放创新基金项目(SC240009) （SC240009）
武汉工程大学研究生创新基金项目(CX2023044) （CX2023044）
