Abstract
Spinel LiMn2O4, a cathode material for Li-ion batteries, is featured as good high-rate performance, low cost and environmental friendly. The pristine and Al-doped LiMn2O4 samples were prepared by sol-gel method. The structure and micromorphology of the as-prepared samples were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results demonstrated that the as-prepared LiMn2O4 samples had a typical cubic spinel structure and were composed of sphere-like particles with a diameter range of 300 ~ 500 nm. Galvanostatic charge-discharge tests showed that the LiMn2O4 samples doped with Al element exhibited an enhanced cycling performance. Especially, in the case of LiMn2O4 with 5% Al-doped, the discharge capacity retention was about 98.2% at the rate of 1C discharge and was 99% at the rate of 5C discharge, based on the same charge rate of 1C.
Keywords
Li-ion batteries, cathode, spinel structure, Al-doping, cycling performance
Publication Date
2013-06-28
Online Available Date
2013-01-21
Revised Date
2013-01-16
Received Date
2012-10-12
Recommended Citation
Yong-Long WANG, Wen-Ge WANG, Qian ZHANG, Xin WANG, Jian-Sheng CAO, Shi-Hai YE.
Electrochemical Performance of Al-Doped Spinel LiMn2O4 Cathode Material for Li-ion Batteries[J]. Journal of Electrochemistry,
2013
,
19(3): Article 7.
DOI: 10.61558/2993-074X.2954
Available at:
https://jelectrochem.xmu.edu.cn/journal/vol19/iss3/7
Included in
Engineering Science and Materials Commons, Materials Chemistry Commons, Materials Science and Engineering Commons, Physical Chemistry Commons, Power and Energy Commons
