Synthesis and Electrochemical Properties of Li Ni1/3 Co1/3 Mn1/31-xLaxO2 Cathode Materials

摘要：

Compounds of Li Ni1/3Co1aMn1/31 -x LaxO2 (0 ≤ x ≤ 0.04) system as cathode materials for lithium ion batteries were prepared by heating the sol-gel precursor. The samples were characterized by X-ray diffraction (XRD) and their electrochemical properties were investigated in terms of the cycling behavior and electrochemical impedance spectroscopy (EIS) response. It was found that the substitution of transition metals by lanthanum produced a complex change in lattice parameters, thereby induced change in electrochemical properties. Specific capacity and cycling performance of the sam ples were improved with the increase of lanthanum content (0≤ x ≤0.03). But high lanthanum content (x =0.04) deteriorated its cycling performance renewedly, which was probably related to the structural instability caused by excessive lanthanum introduction.

关键词： Li Ni1/3Co1/3Mnv111/31 - xLaxO2 cathode material structure electrochemical property rare earths

作者: Ding Yanhuai Zhang Ping Jiang Yong

作者单位: College of Civil Engineering & Mechanics, Xiangtan University, Xiangtan 411105, China;Institute of Fundamental Mechanics & Material Engineering, Xiangtan University, Xiangtan 411105, China

会议类型: 国际会议

会议名称: 2006稀土玻璃陶瓷国际学术年会

会议地点: 海口

会议语种:英文

页码: 268-270

在线出版日期: 2006-11-13（万方平台首次上网日期，不代表论文的发表时间）