LiMn2O4在聚合物锂离子蓄电池中的高温性能

被引:4
作者
郑明森
金明钢
董全峰
尤金跨
林祖赓
机构
[1] 厦门大学宝龙电池研究所
关键词
聚合物锂离子蓄电池; LiMn2O4; 高温性能;
D O I
暂无
中图分类号
TM912.9 [各种材料蓄电池];
学科分类号
摘要
在电解液中的溶解是尖晶石LiMn2O4高温不可逆容量损失的主要原因。聚合物锂离子蓄电池结构特点及聚合物材料与电解液相互作用可以影响高温下尖晶石LiMn2O4在电解液中的溶解及扩散行为,降低尖晶石LiMn2O4的不可逆容量损失。使用尖晶石LiMn2O4为正极活性材料,利用厦门大学宝龙电池研究所聚合物锂离子蓄电池中试生产线,在特定的工艺条件下制备容量为600mAh的实验电池。实验表明,在聚合物锂离子蓄电池中LiMn2O4材料高温稳定性明显改善,实验电池在常温下循环200次,容量保持率在80%以上;55℃下循环30次,容量保持率超过92%;70℃下循环10次,容量保持率达到96%。
引用
收藏
页码:166 / 168
页数:3
相关论文
共 8 条
  • [1] Improvement of structural stability of LiMn2 O4 cathode material on 55 cycling by Sol-Gel coating of LiCoO2. CHO J,KIM G,LIM H S,et al. Electrochemical and Solid State Letters . 1999
  • [2] Self-discharge of LiMn2O4 /C Li-ion cells in their discharge state. BLYR A,SIGALS C,AMATUCCI G,et al. Journal of the Electrochemical Society . 1998
  • [3] FTIR spectroscopy of metal oxide insertion electrodes: a new diagnostic tool for analysis of capacity fading in secondary Li/Li1+ xMn2 O4 cells. WEN S J,RICHARDSON T J,MA L,et al. Journal of the Electrochemical Society . 1996
  • [4] Enhancement of the electrochemical properties of Li1 Mn2 O4 through chemical substitution. AMATUCCI C C,PEREIRA N,ZHENG T,et al. Journal of Power Sources . 1999
  • [5] Surface treatments of Li1+ xMn2- x O4 spinels for improved elevated temperature performance. AMATUCCI C C,BLYR A,SIGALS C,et al. Solid State Ionics . 1997
  • [6] Surface treatments of Li1+ xMn2- x O4 spinels for improved elevated temperature performance. AMATUCCI C C,BLYR A,SIGALS C,et al. Solid State Ionics . 1997
  • [7] Capacity fading on cycling of 4 V Li/LiMn2 O4 cells. XIA Yong-yao,ZHOU Yun-hong,YASHIO M. Journal of the Electrochemical Society . 1997
  • [8] M3+modifiedLiMn2O4spinelintercalationcathodesⅡElectrochemicalstabilizationbyCr3+. RobertsonAD,LUSH,HowardWF.etal. JElectrochemSoc . 1997