Effect of Al-Doping in Li-Rich Material Li_1.2Mn_0.543Co_0.078Ni_0.155Al_0.030O₂ for Lithium-Ion Batteries

Authors

Xiao-xi JIN, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China;
Yi-xiao LI, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China;
Yong YANG, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China;
Zhou-cheng WANG, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China;Follow

Corresponding Author

Zhou-cheng WANG(zcwang@xmu.edu.cn)

Abstract

The Al-doped 0.5Li₂MnO₃·0.5Li(Mn_0.4Co_0.2Ni_0.4)O₂ compounds were successfully synthesized as cathode materials for lithium-ion batteries. The pristine and Al-doped materials were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), inductively coupled plasma-atomic emission spectrometry (ICP-AES) and laser Raman spectroscopy. The results indicated that all the prepared materials were indexed as a hexagonal structure with R-3m space group, and Al element had been introduced into lattice. When cycled at 180 mA·g^-1 (1 C-rate), the capacity retention of 4% (by mole) Al-doped 0.5Li₂MnO₃·0.5Li(Mn_0.4Co_0.2Ni_0.4)O₂ electrode was as high as 83.7% after 100 cycles. The Al-doped materials could enhance the structural stability of electrodes, which contributes to high stabilized performance of cathode material for lithium ion batteries.

Graphical Abstract

Keywords

lithium-ion battery, lithium enriched material, Al-doping, cycling performance

DOI Link

https://doi.org/10.13208/j.electrochem.130516

Publication Date

2014-04-28

Online Available Date

2014-04-17

Revised Date

2013-06-19

Received Date

2013-05-16

Recommended Citation

Xiao-xi JIN, Yi-xiao LI, Yong YANG, Zhou-cheng WANG. Effect of Al-Doping in Li-Rich Material Li_1.2Mn_0.543Co_0.078Ni_0.155Al_0.030O₂ for Lithium-Ion Batteries[J]. Journal of Electrochemistry, 2014 , 20(2): 116-120.
DOI: 10.13208/j.electrochem.130516
Available at: https://jelectrochem.xmu.edu.cn/journal/vol20/iss2/5