锂离子电池用正极材料LiCo_(1-x)Ni_xO_2的研究  

Study ON LiCo 1-x Ni xO 2 used as the cathode of lithium ion battery

作　　者：郭鸣凤[1] 叶劲草[1] 张洪有 杨瑞敏[1] 

机构地区：[1]天津电源研究所

出　　处：《电源技术》1999年第A03期47-48,共2页Chinese Journal of Power Sources

摘　　要：采用高温法合成了ＬｉＣｏ１－ｘＮｉｘＯ２（ｘ＝０．２，０．５，０．８和１）。通过ＸＲＤ测定了它的晶格结构和晶胞参数。结果发现，随着ｘ值的增大，ａ０值和ｃ０值都顺次变大，ｘ＝１时晶胞体积最大。初步探索了ＬｉＣｏ１－ｘＮｉｘＯ２在１ｍｏｌ／ＬＬｉＣｌＯ４－ＰＣ＋ＤＭＥ中的充放电性能，典型样品在ＡＡ型锂离子电池中放电容量５００ｍＡｈ，０．２Ｃ充放循环了３００次。LiCo 1-x Ni xO 2 was synthesized by the method of high temperature (x=0.2,0.5,0.8). Its crystal lattice structure and parameters were tested by XRD. The results show that the value of a 0 and c 0 increase along with the increasing value of x and the crystal volume is the largest at the value x=1. The charge and discharge performance of LiCo 1-x Ni xO 2 has been studied by using 1mol/L LiClO 4 PC+DME as electrolyte. The cyclic life of AA size cell with 500mAh at 0.2C rate is more than 300 cycles.

关 键 词：锂离子电池 LiCo1-xNixO2 正极材料 电池 

分 类 号：TM912.203[电气工程—电力电子与电力传动]