高级检索
无机材料学报

无机材料学报

• 研究论文 • 上一篇    下一篇

反应温度对LiCoO2薄膜性能的影响

陶颖1; 陈振华2; 祝宝军2   

  1. 1. 中南大学材料学院, 长沙 410083; 2. 湖南大学材料学院, 长沙 410082
  • 收稿日期:2004-08-09 修回日期:2004-10-25 出版日期:2005-09-20 网络出版日期:2005-09-20

Effect of Reactive Temperature on the Characterization of LiCoO2 Film

TAO Ying1; CHEN Zhen-Hua2; ZHU Bao-Jun2   

  1. 1.School of Materials Science and Engineering; Central South University; Changsha 410083, China; 2.School of Materials Science and Engineering; Hunan University; Changsha 410082, China
  • Received:2004-08-09 Revised:2004-10-25 Published:2005-09-20 Online:2005-09-20

PDF (PC)

1121

摘要： 采用水热电化学法在Ni基体上制备了LiCoO2薄膜.反应温度影响薄膜的择优取向,80℃时制备的薄膜具有(003)取向,100℃制备的LiCoO2薄膜具有(101)和(104)取向,150℃时制备的薄膜取向性不明显.其中以100℃制备的(101)取向LiCoO2薄膜的电化学性能最好,其容量为143mAh/g;10次充放电后,薄膜电极容量衰减小.

关键词: 水热电化学法, LiCoO2薄膜, 择优取向, 电性能

Abstract: LiCoO2 films were fabricated on nickel substrates by a hydrothermal-electrochemical method. The film prepared at 80℃ is mainly (003) plane oriented and prepared at 100℃, (101) and (104) plane oriented and prepared at 150℃ (003) plane oriented as well. The (101) plane orientation is favorable for Li+ diffusion through the cathode, and therefore the (101) plane oriented film contributes to the enhanced electrochemical performance. The film with (101) oriented prepared at 100℃ has the capacity of 143mAh/g and no obvious capacity attenuation detected.

Key words: hydrothermal-electrochemical method, LiCoO2 film, preferred oriention, electrochemical characterization

中图分类号: