Cobalt-doped Todorokite Prepared by Refluxing at Atmospheric Pressure as Lithium-ion Battery Cathode

Authors

Rui-qi LI, Key Laboratory of Subtropical Agriculture Resource and Environment,Ministry of Agriculture,Huazhong Agricultural University,Wuhan430070,China;
Chun-hua SONG, Key Laboratory of Subtropical Agriculture Resource and Environment,Ministry of Agriculture,Huazhong Agricultural University,Wuhan430070,China;
Chao XU, Key Laboratory of Subtropical Agriculture Resource and Environment,Ministry of Agriculture,Huazhong Agricultural University,Wuhan430070,China;
Li-xing TU, Key Laboratory of Subtropical Agriculture Resource and Environment,Ministry of Agriculture,Huazhong Agricultural University,Wuhan430070,China;
Guo-hong QIU, Key Laboratory of Subtropical Agriculture Resource and Environment,Ministry of Agriculture,Huazhong Agricultural University,Wuhan430070,China;
Fan LIU, Key Laboratory of Subtropical Agriculture Resource and Environment,Ministry of Agriculture,Huazhong Agricultural University,Wuhan430070,China;

Corresponding Author

Fan LIU

Abstract

Cobalt-doped todorokites were prepared by refluxing at atmospheric pressure,and then charactered by X-ray diffraction(XRD),thermogravimetry(TG) and the analysis of chemical compositions.These measurements showed that all of the refluxing products were single phase of todorokites and the structure formulas were MgxCoyMnOz·nH2O,where 0.18 ≤ x ≤ 0.22,0 ≤ y ≤ 0.24,2.10 ≤ z ≤ 2.53,and 0.35 ≤ n ≤0.73.The electrochemical characteristics of cobalt-doped todorokites were examined as lithium insertion hosts for cathodes in rechargeable lithium batteries.The first discharge capacity of undoped todorokite electrode was 211 mAh/g and the discharge capacity became 37 mAh/g after 30 cycles.The Mg0.18Co0.12MnO2.19·0.45 H2O with doping Co 10% displayed the best discharge behavior,which showed a high discharge capacity of 219 mAh/g at first cycle and the cycling capacity of 102 mAh/g after 100 cycles.

Keywords

refluxing at atmospheric pressure, todorokite, cobalt-doped, lithium-ion secondary battery, cathode materials

DOI Link

https://doi.org/10.61558/2993-074X.2045

Publication Date

2010-02-28

Online Available Date

2010-02-28

Revised Date

2010-02-28

Received Date

2010-02-28

Recommended Citation

Rui-qi LI, Chun-hua SONG, Chao XU, Li-xing TU, Guo-hong QIU, Fan LIU. Cobalt-doped Todorokite Prepared by Refluxing at Atmospheric Pressure as Lithium-ion Battery Cathode[J]. Journal of Electrochemistry, 2010 , 16(1): 90-95.
DOI: 10.61558/2993-074X.2045
Available at: https://jelectrochem.xmu.edu.cn/journal/vol16/iss1/19