黑龙江科技大学学报2024，Vol.34Issue(3)：374-379,6.DOI:10.3969/j.issn.2095-7262.2024.03.007
沉淀剂对LiNi0.5Mn1.5O4材料结构及电性能的影响
Effect of precipitant on structure and electrical properties of LiNi0.5 Mn1.5 O4 materials
摘要
Abstract
This paper aims to study the effect of precipitant on the performance of LiNi0.5Mn1.5O4 cathode materials of lithium ion batteries by taking Na2CO3,CO(NH2)2,NaHCO3 and NH4HCO3 as pre-cipitants to prepare LiNi0.5Mn1.5 O4 materials with hydrothermal-molten salt method.The study is accom-plished by characterizing the materials with X-ray diffraction,Fourier transform infrared spectroscopy,scanning electron microscopy and X-ray photoelectron spectroscopy;and testing the electrochemical prop-erties of the materials.The results show that the lithium nickel manganese oxide material prepared with Na2 CO3 as precipitant has less Mn3+content,high crystallinity,uniform particle distribution and small size,and exhibits the most stable structure.The Na2CO3-LNMO sample has a discharge specific capacity of 122.87 mAh/g at 1 C and a capacity retention rate of 93.17%after 200 cycles,which has the best electrochemical performance.关键词
锂离子电池/正极材料/镍锰酸锂/水热-熔盐法Key words
lithium-ion battery/cathode material/LiNi0.5Mn1.5O4/hydrothermal-molten salt method分类
化学化工引用本文复制引用
周国江,樊军花,周扬,刘光,张秀阳..沉淀剂对LiNi0.5Mn1.5O4材料结构及电性能的影响[J].黑龙江科技大学学报,2024,34(3):374-379,6.基金项目
黑龙江省教育厅省属高科技成果研发、培育项目(TSTAU-C2018004) （TSTAU-C2018004）
