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The gradient composite LiNi0.8Co0.2O2 was synthesized using spherical Ni(OH)(2) particle coated by a sol-gel containing cobalt and lithium. The precursor was examined by DSC-TG. The gradient composite was characterized by SEM, EDS, XPS, XRD and ICP-AES. The XPS, EDS and ICP-AES results show that content of cobalt in the surface is higher than in the center of the spherical particle of the gradient composite. The first discharge specific capacity of the gradient composite sintered at 700 degrees C is 187.3 mAh center dot g(-1).
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