LiNi_(0.9)Mn_(0.03)Co_(0.07)O_2的合成及电化学性能  

Synthesis and electrochemical performance of LiNi_(0.9)Mn_(0.03)Co_(0.07)O_2

作　　者：邓新荣[1] 胡国荣[1] 彭忠东[1] 肖政伟[1] 

机构地区：[1]中南大学冶金科学与工程学院,湖南长沙410083

出　　处：《电池工业》2008年第2期97-99,共3页Chinese Battery Industry

摘　　要：介绍了以β-Ni(OH)2、CoSO4、MnSO4和LiOH.H2O为原料,在β-Ni(OH)2表面同时包覆Co、Mn合成锂离子电池正极材料LiNi0.9Mn0.03Co0.07O2的方法。XRD测试结果表明:样品为α-NaFeO2结构;SEM和EDS结果表明:Co、Mn均包覆在-βNi(OH)2表面上,且包覆均匀、致密。合成的材料在电流密度为30 mA/g下,第二次循环放电容量为194 mAh/g,50次循环后容量仍保持为189mAh/g,材料循环性能稳定。The positive material LiNi0.9Mn0.03Co0.07O2 for Li-ion battery was synthesized with β-Ni（OH）2, CoSO4,MnSO4 and LiOH-H2O as raw materials through coating with Co, Mn. The XRD test results showed that the sample had the structure of α-NaFeO2. SEM and EDS results showed that the sample was coated homogeneously with Co and Mn. The second cycle discharge capacity of the material was 194 mAh/g, and the discharge capacity remained 189 mAh/g after 50 cycles with current density 30 mA/g.

关 键 词：锂离子电池 包覆 正极材料 循环稳定性 

分 类 号：TM912.9[电气工程—电力电子与电力传动]