Electrochemical Performance of Al-Doped Spinel LiMn₂O₄ Cathode Material for Li-ion Batteries

Authors

Yong-Long WANG
Wen-Ge WANG
Qian ZHANG
Xin WANG
Jian-Sheng CAO
Shi-Hai YE

Corresponding Author

Shi-Hai YE

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

DOI Link

https://doi.org/10.61558/2993-074X.2954

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

References

[1] Cao Y J(曹艳军), Long X Y(龙翔云), Cheng Y F(程云峰). Research development of cathode electrode material for lithium-ion batteries[J]. Technology & Development of Chemical Industry (化工技术与开发), 2007, 36(03): 16-18.

[2] Ohzuku T, Brodd R J, An overview of positive-electrode materials for advanced lithium-ion batteries[J]. Journal of Power Sources, 2007, 174(2): 449-456.

[3] Aoshima T, Okahara K, Kiyohara C, et al. Mechanisms of manganese spinels dissolution and capacity fade at high temperature[J]. Journal of Power Sources, 2001, 97-98: 377-380.

[4] Tang S B, Lai M O, Lu L. Electrochemical studies of low-temperature processed nano-crystalline LiMn₂O₄ thin film cathode at 55 °C[J]. Journal of Power Sources, 2007, 164(1): 372-378.

[5] Ouyang C Y, Shi S Q, Lei M S. Jahn-Teller distortion and electronic structure of LiMn₂O₄[J]. Journal of Alloys and Compounds, 2009, 474(1/2): 370-374.

[6] Aurbach D. Review of selected electrode-solution interactions which determine the performance of Li and Li ion batteries[J]. Journal of Power Sources, 2000, 89(2): 206-218.

[7] Xiao L F, Zhao Y Q, Yang Y Y, et al. Enhanced electrochemical stability of Al-doped LiMn₂O₄ synthesized by a polymer-pyrolysis method[J]. Electrochimica Acta, 2008, 54(2): 545-550.

[8] Lee C W, Kim H S, Moon S I. Effects on surface modification of spinel LiMn₂O₄ material for lithium-ion batteries[J]. Materials Science and Engineering: B, 2005, 123(3): 234-237.

[9] Liu Z L, Wang H B, Fang L, et al. Improving the high-temperature performance of LiMn₂O₄ spinel by micro-emulsion coating of LiCoO₂[J]. Journal of Power Sources, 2002, 104(1): 101-107.

[10] Skapin A S, Gaberscek M, Dominko R, et al. Detection of highly conductive pathways in LiMn₂O₄-carbon black composites for Li ion batteries by microcontact impedance spectroscopy[J]. Solid State Ionics, 2004, 167(3/4): 229-235.

[11] Arumugam D, Kalaignan G P. Synthesis and electrochemical characterizations of nano-SiO₂-coated LiMn₂O₄ cathode materials for rechargeable lithium batteries[J]. Journal of Electroanalytical Chemistry, 2008, 624(1/2)： 197-204.

[12] Liu D Q, Liu X Q, He Z Z. Surface modification by ZnO coating for improving the elevated temperature performance of LiMn₂O₄[J]. Journal of Alloys and Compounds, 2007, 436(1/2): 387-391.

[13] Chung K Y, Ryu C W, Kim K B. Onset mechanism of Jahn-Teller distortion in 4 V LiMn₂O₄ and its suppression by LiM_0.05Mn_1.95O₄ (M = Co, Ni) coating[J]. Journal of The Electrochemical Society, 2005, 152(4): A791-A795.

[14] Zhou D Q(周大桥). Preparation and performance of Co and La Co-doped Li-rich lithium manganate[J]. Journal of Electrochemistry(电化学), 2009, 15(1): 74-78.

[15] He X M, Li J J, Cai Y. Fluorine doping of spherical spinel LiMn₂O₄[J]. Solid State Ionics, 2005, 176(35/36): 2571-2576.

[16] Molenda M, Dziembaj R, Podstawka E. Influence of sulphur substitution on structural and electrical properties of lithium-manganese spinels[J]. Journal of Physics and Chemistry of Solids, 2006, 67(5/6): 1347-1350.

[17] Ye S H, Bo J K, Li C Z, et al. Improvement of the high-rate discharge capability of phosphate-doped spinel LiMn₂O₄ by a hydrothermal method[J]. Electrochimica Acta, 2010, 55(8): 2972-2977.