Influence of Crystallinity on the Kinetics of Li Ion Insertation and Deinsertation in Spinel LiMn_(2)O_(4)

Authors

Rong-hua ZENG, School of Chemistry and Environment,South China Normal University,Guangzhou 510006,Guangdong,China;
Dong-sheng LV, School of Chemistry and Environment,South China Normal University,Guangzhou 510006,Guangdong,China;
Wei-shan LI, School of Chemistry and Environment,South China Normal University,Guangzhou 510006,Guangdong,China;

Corresponding Author

Wei-shan LI(liwsh@scnu.edu.cn)

Abstract

Two spinel lithium manganese oxides of different crystallinity were prepared by sol-gel process and were studied by using inducfively coupled plasma,X-ray diffraction,scaning electron micrographs,constant charging and discharging,cyclic voltammetry and electrochemical impedance spectrometry,the results show that the sample treated under 700 ℃ has higher crystallinity than the sample treated under 500 ℃,however,the sample with lower crystallinity has higher discharge capacity and better cyclic performance that due to quicker charge exchange speed and quicker diffusion speed of Li-ion.

Keywords

Spinel lithium manganese oxides, Crystallinity, Electrode process kinetics

DOI Link

https://doi.org/10.61558/2993-074X.1740

Publication Date

2006-08-28

Online Available Date

2006-08-28

Revised Date

2006-08-28

Received Date

2006-08-28

Recommended Citation

Rong-hua ZENG, Dong-sheng LV, Wei-shan LI. Influence of Crystallinity on the Kinetics of Li Ion Insertation and Deinsertation in Spinel LiMn_(2)O_(4)[J]. Journal of Electrochemistry, 2006 , 12(3): 292-297.
DOI: 10.61558/2993-074X.1740
Available at: https://jelectrochem.xmu.edu.cn/journal/vol12/iss3/12