Corresponding Author

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


The Al-doped 0.5Li2MnO3·0.5Li(Mn0.4Co0.2Ni0.4)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(Mn0.4Co0.2Ni0.4)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


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

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