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锂离子电池正极材料Li[CoxLi(1/3)-(x/3)Mn(2/3)-(2x/3)]O2的制备与表征
Synthesis and Characterizations of Li[CoxLi(1/3)-(x/3)Mn(2/3)-(2x/3)]O2 Cathode Materials for Lithium Secondary Batteries
【摘要】 采用柠檬酸盐法合成了Li[CoxLi1/3-x/3Mn2/3-2x/3]O2(x=0.1,0.2,0.3,0.4,0.5)正极材料.利用X射线衍射(XRD),Raman光谱和红外光谱(FTIR)等方法研究不同质量分数的Co对材料晶体结构的影响,并分析了原因.对不同组分的材料进行了电化学性能测试,结果表明,当x=0.5时,样品充放电容量高,循环性能优良.
【Abstract】 Li[CoxLi1/3-x/3Mn2/3-2x/3]O2(x=0.1,0.2,0.3,0.4,0.5) cathode materials were synthesized by means of the citric acid-based sol-gel method.Their structures and electrochemical properties were investigated via XRD,Raman,FTIR and electrochemical charge-discharge cycling.The results show that the material with x=0.5 exhibited the highest reversible capacity and the best capacity retention.
【关键词】 锂离子电池;
Li[CoxLi1/3-x/3Mn2/3-2x/3]O2;
Raman光谱;
红外光谱;
【Key words】 lithium secondary battery; Li[CoxLi1/3-x/3Mn2/3-2x/3]O2; Raman spectrum; FTIR;
【Key words】 lithium secondary battery; Li[CoxLi1/3-x/3Mn2/3-2x/3]O2; Raman spectrum; FTIR;
【基金】 国家重点基础研究发展计划973项目基金(批准号:2009CB220104);教育部长江学者和创新团队发展计划项目基金(批准号:IRT0625);吉林省科技发展计划项目基金(批准号:20060511)
- 【文献出处】 吉林大学学报(理学版) ,Journal of Jilin University(Science Edition) , 编辑部邮箱 ,2009年04期
- 【分类号】TM912
- 【被引频次】2
- 【下载频次】185