Acta Chimica Sinica ›› 2006, Vol. 64 ›› Issue (17): 1854-1858. Previous Articles    



王丽琴; 焦丽芳; 袁华堂*; 郭建; 李海霞; 章明; 王永梅   

  1. (南开大学新能源材料化学研究所 天津 300071)
  • 收稿日期:2005-11-25 修回日期:2006-03-09 出版日期:2006-09-14 发布日期:2006-09-14
  • 通讯作者: 袁华堂

The Study on Mo-Doped Li[Ni1/3Mn1/3Co1/3]O2

WANG Li-Qin; JIAO Li-Fang; YUAN Hua-Tang*; GUO Jian; LI Hai-Xia; ZHANG Ming; WANG Yong-Mei   

  1. (Institute of New Energy Material Chemistry, Nankai University, Tianjin 300071)
  • Received:2005-11-25 Revised:2006-03-09 Online:2006-09-14 Published:2006-09-14
  • Contact: YUAN Hua-Tang

Layered Li[Ni(1-x)/3Mn(1-x)/3Co(1-x)/3Mox]O2 materials (x=0, 0.005, 0.01, 0.02) were prepared by a solid-state pyrolysis method. Experiments of XRD, SEM, cyclic voltammetry and charge/discharge cycling were carried out. It indicated that when x=0.01, the sample showed the highest first discharge capacity of 211.6 mAh•g-1 at a current density of 20 mA/g in the voltage range 2.3~4.6 V, and stable cycleability by possessing 185.9 mAh•g-1 after 50 cycles, and the capacity fade was only 12.1%. The Mo-doped samples exhibited higher discharge capacity and better cycleability at room temperature.

Key words: Li battery, MoO3, doping, cathode material