节点文献
锂离子电池正极材料LiNi0.5-xCo2xMn0.5-xO2(x=0.1)的合成及性能
Synthesis and Characterization of LiNi0.5-xCo2xMn0.5-xO2(x=0.1) as Cathode Material for Lithium-ion battery
【摘要】 采用共沉淀法以化学计量比的Ni2+和Mn(4+1∶1)代替LiCoO2中的Co3+合成锂离子电池正极材料LiNi0.5-xCo2xMn0.5-xO2(x=0.1)。利用X射线衍射对其结构进行表征,结果表明材料的衍射峰与标准的α-NaFeO2层状结构完全对应,为层状嵌锂复合氧化物。LiNi0.4Co0.2Mn0.4O2在电压2.5—4.3V范围内表现出较好的电化学性能,循环25次后仍保持大约136mAh/g,具有很好的发展前景。
【Abstract】 LiNi0.5-xCo2xMn0.5-xO2(x=0.1)is prepared by the simultaneous substitution of Ni2+ and Mn4+(1:1)for Co3+ in LiCoO2.It is prepared by the mix hydroxide method using LiOH solution.X-ray diffraction pattern show that the material has a layer α-NaFeO2-type structure.The results show that LiNi0.4Co0.2Mn0.4O2 has about specific discharge capacity of 136 mAh/g after 25 cycle at 2.5-4.3 V,which would be a potential cathode.
【关键词】 锂离子电池;
正极材料;
共沉淀法;
电化学性能;
【Key words】 Li-ion battery; cathode materials; co-precipitated method; electrochemical performance;
【Key words】 Li-ion battery; cathode materials; co-precipitated method; electrochemical performance;
【基金】 天津市自然科学基金资助项目(批准号023606111)
- 【文献出处】 河北化工 ,Hebei Chemical Engineering and Industry , 编辑部邮箱 ,2006年01期
- 【分类号】TM911
- 【被引频次】3
- 【下载频次】249