An Investigation of Structural Properties of Li-Al-mixed Doped Spinels Materials Li _1+xAl_yMn _z-yO₄

Authors

Zi-shan ZHENG, Dept. of Materials Sci. and Engin. State Key Lab. of New Ceramics and Fine Processing, Tsinghua Univ., Beijing 10084, China
Zi-long TANG, Dept. of Materials Sci. and Engin. State Key Lab. of New Ceramics and Fine Processing, Tsinghua Univ., Beijing 10084, China
Zhong-tai ZHANG, Dept. of Materials Sci. and Engin. State Key Lab. of New Ceramics and Fine Processing, Tsinghua Univ., Beijing 10084, China
Wan-ci SHENG, Dept. of Materials Sci. and Engin. State Key Lab. of New Ceramics and Fine Processing, Tsinghua Univ., Beijing 10084, China

Corresponding Author

Zi-shan ZHENG

Abstract

Al and Li elements were co-doped into host spinel lithium manganese oxide by a simple and economical preparation technology. There was an investigation of the influence of doped Al contents on the initial capacity and cycling performance of the materials. The investigation of the XRD patterns, the analysis of the SEM micrographs and the determination of IR spectroscopy showed that the particles of dopant materials are fine, narrowly distributed and well crystallized, and the bonds Mn-O are stronger than these of undoped materials. The resulted materials have a high initial capacity of 119 mAh/g and good cycling characterization. The capacity still kept at 106 mAh/g after 200 cycles.

Keywords

Lithium-ion batteries, LiMn2O4, Cation dopant, IR spectroscopy

DOI Link

https://doi.org/10.61558/2993-074X.3269

Publication Date

2001-11-28

Online Available Date

2001-11-28

Revised Date

2001-03-07

Received Date

2000-12-18

Recommended Citation

Zi-shan ZHENG, Zi-long TANG, Zhong-tai ZHANG, Wan-ci SHENG. An Investigation of Structural Properties of Li-Al-mixed Doped Spinels Materials Li _1+xAl_yMn _z-yO₄[J]. Journal of Electrochemistry, 2001 , 7(4): 433-438.
DOI: 10.61558/2993-074X.3269
Available at: https://jelectrochem.xmu.edu.cn/journal/vol7/iss4/14