摘要
首次提出以碳酸盐为沉淀剂,采用共沉淀法制备Ni1/3Co1/3Mn1/3CO3前驱体,再和锂源混合高温固相合成了锂离子蓄电池层状LiNi1/3Co1/3Mn1/3O2正极材料。采用X射线衍射(XRD)和电子扫描电镜(SEM)对Ni1/3Co1/3Mn1/3CO3前驱体和LiNi1/3Co1/3Mn1/3O2正极材料的结构及形貌进行了表征,SEM测试表明LiNi1/3Co1/3Mn1/3O2的形貌近似为球形,且颗粒分布均匀。并对其进行了充放电性能和循环伏安研究,实验结果表明:LiNi1/3Co1/3Mn1/3O2在25℃、2.5"4.6V电压范围,0.1C倍率下,首次放电比容量达182.97mAh/g。
The layered LiNi1/3Co1/3Mn1/3O2was firstly synthesized using a nickel-cobalt-manganese carbonate precursor. The precursor LiNi1/3Co1/3Mn1/3O2 was obtained by the chemical co-precipitation method. The precursor LiNi1/3Co1/3Mn1/3O2 and the LiNi1/3Co1/3Mn1/3O2 powders were characterized by means of X ray diffraction（XRD） and scanning electron microscopy（SEM）. The results show that LiNi1/3Co1/3Mn1/3O2 particles possesses spherical morphology and uniform particle size. The electrochemical properties of the LiNi1/3Co1/3Mn1/3O2 as cathode material for rechargeable lithium-ion batteries such as the galvanostatic charge-discharge performance and cyclic voltammetry（CV） were measured. The initial discharge capacity of 182.97 mAh/g was obtained in the voltage range of 2.5-4.6 V and at 0.1 C, 25℃.
出处
《电源技术》
CAS
CSCD
北大核心
2005年第10期641-643,697,共4页
Chinese Journal of Power Sources
