[en] In this paper, Al doped cathode materials with the formula LiNi_1/3Co_1/3Mn_1/3-xAl_xO₂ (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 LiNi_1/3Co_1/3Mn_1/3-xAl_xO₂ nanofibers was less than 100 nm. The effect of Al substitution on the crystal structure and electrochemical properties of LiNi_1/3Co_1/3Mn_1/3O₂ 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 LiNi_1/3Co_1/3Mn_1/3O₂. The LiNi_1/3Co_1/3Mn_1/3-0.06Al_0.06O₂ nanofibers showed a first discharge capacity of 186.59 mAh g^-1 with the capacity retention of 96.1% after 30 cycles.