Development of novel cathode materials for Li-ion batteries

被引：0
|
作者：
Popov, BN [1 ]
White, RE [1 ]
机构：
[1] Univ S Carolina, Dept Chem Engn, Columbia, SC 29208 USA
来源：
THIRTEENTH ANNUAL BATTERY CONFERENCE ON APPLICATIONS AND ADVANCES | 1998年
关键词：
D O I：
10.1109/BCAA.1998.653900
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
New CrOx modified positive electrodes and quaternary spinels LiCryMn2-yO4 (y=0.05 to y=0.5) and LixCryMn2-yO4+delta(y=0.02 to 0.1) were synthesized and electrochemically characterized. An increase of O/Cr ratio and the subsequent modification of the oxide increases the capacity of m-CrOx, to 250 mA/g. The average values of these cells is 3.0 V which gives an average power density for m-CrOx of approximately 650 Wh/g. The CrOx doped LiCr0.1Mn1.9O4.132 that was synthesized using high oxygen pressure showed the best capacity retention. Using seven times higher discharge rate than that for the pure spinel or Cr3+ doped spinel (LiCr0.1Mn1.9O4), the capacity of LiCr0.1Mn1.9O4.132 remained almost unchanged after 200 cycles.
引用
收藏
页码：387 / 392
页数：6
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