Morphology and electrochemical properties of Al doped LiNi1/3Co1/3Mn1/3O2 nanofibers prepared by electrospinning

Abstract In this paper, Al doped cathode materials with the formula LiNi1/3Co1/3Mn1/3−xAlxO2 (0 ≤ x ≤ 0.08) have been prepared successfully from sol–gel precursors by using electrospun method. The morphological features of the nanofibers were characterized by atomic force microscopy (AFM). The average diameter of the uniform LiNi1/3Co1/3Mn1/3−xAlxO2 nanofibers was less than 100 nm. The effect of Al substitution on the crystal structure and electrochemical properties of LiNi1/3Co1/3Mn1/3O2 were studied systematically by X-ray diffraction (XRD) and various electrochemical measurements. The results showed Al substitution played an important role in the superior reversible capacity and good cycling performance of LiNi1/3Co1/3Mn1/3O2. The LiNi1/3Co1/3Mn1/3−0.06Al0.06O2 nanofibers showed a first discharge capacity of 186.59 mAh g−1 with the capacity retention of 96.1% after 30 cycles.

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