Abstract
The cathode material of Li1.1Co0.02La0.01Mn2O4 was successfully synthesized by the method of co-precipitation followed by a solid state reaction.In the sintering temperature range of 700～850 ℃,X-ray diffraction(XRD) results showed a single phase of each material and the increase of crystallization degree,and scanning electron microscopic(SEM) images indicated that the particle size increased and the specific surface area decreased,respectively,with increasing the sintering temperature.Due to its lower polarization resistance,the Co and La co-doped lithium-rich lithium manganate(sintered at 800 ℃) positive electrodes showed the most promising electrochemical performance.The capacity retention after 50 cycles reached 98.5%.
Keywords
lithium-ion battery, LiMn2O4, co-doped, La-doped, electrochemical performance
Publication Date
2009-02-28
Online Available Date
2009-02-28
Revised Date
2009-02-28
Received Date
2009-02-28
Recommended Citation
Da-qiao ZHOU.
Preparation and Performance of Co and La Co-doped Li-rich Lithium Manganate[J]. Journal of Electrochemistry,
2009
,
15(1): 74-78.
DOI: 10.61558/2993-074X.1958
Available at:
https://jelectrochem.xmu.edu.cn/journal/vol15/iss1/17
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