The metallic ion-doped LiNi0.8Co0.15Al0.05O2 electrode material was prepared via a sol-gel combustion process using polyethylene glycol gel as fuel and nitrate as an oxidizer. The phase structures and morphologies of the as-prepared samples were characterized by X-ray diffractometer, Raman spectroscopy and scanning electron microscope, respectively, and their electrochemical performance was measured. Results show that the sol-gel process ensures the molecular-level homogeneity of the chemical product, and the as-prepared samples have better hexagonal layered structure. Although the initial coulomb efficiency of the battery is not affected by the Na+-doping, Na+-doping and Mn2+-doping can greatly improve the rate capacity, the discharge capacity are as high as 105.6 and 101 mAh g-1 at 10C, respectively. In addition, Mn2+-doping and Ti2+-doping are efficiently enhanced cyclic stability for the LiNi0.8Co0.15Al0.05O2 material.