Electrochemical Performance of Li_3.22Na_0.569Mn_5.78O_12.0

Authors

Qing-song TONG, College of Chemistry and Materials, Fujian Normal University, Fuzhou 350007, China; State Key Laboratory of Physical Chemistry of Solid Surface, Xiamen University, Xiamen 361005, ChinaFollow
Yong YANG, State Key Laboratory of Physical Chemistry of Solid Surface, Xiamen University, Xiamen 361005, China
Jin-ming LIAN, College of Chemistry and Materials, Fujian Normal University, Fuzhou 350007, China

Corresponding Author

Qing-song TONG(qstong_3503@fjnu.edu.cn)

Abstract

By selecting LiOH·H₂O and Mn(CH₃COO)₂·2H₂O as starting-materials, the positive materials with the structure characterization of Li₄Mn₅O₁₂ and composition of Li_3.22Na_0.569Mn_5.78O_12.0 were prepared by two-phase sintering method consisted of microwave and solid-state sintering processes. XRD patterns data showed that a pure Li₄Mn₅O₁₂ phase was obtained by the fore-treatment of microwave sintering and the post-treatment of the solid-state sintering at 380℃. The charge-discharge tests showed that the newly prepared sample exhibited an initial capacity of 132 mAh·g^-1 and its capacity faded after 100 cycles was 6.8% lower as compared with 1st cycle capacity in the voltage range of 4.5 to 2.5 V. The sample stored for 4 months exhibited an initial capacity of 122 mAh·g^-1 and its capacity faded after 100 cycles was 17.4% lower than its 1st cycle capacity in the same voltage range. The Mn-O bond of the sample strengthened by microwave sintering process.

Keywords

Li4Mn5O12, Microwave, Rechargeability

DOI Link

https://doi.org/10.61558/2993-074X.1683

Publication Date

2005-11-28

Online Available Date

2005-11-28

Revised Date

2005-08-06

Received Date

2005-06-06

Recommended Citation

Qing-song TONG, Yong YANG, Jin-ming LIAN. Electrochemical Performance of Li_3.22Na_0.569Mn_5.78O_12.0[J]. Journal of Electrochemistry, 2005 , 11(4): 435-439.
DOI: 10.61558/2993-074X.1683
Available at: https://jelectrochem.xmu.edu.cn/journal/vol11/iss4/16