Study on synthesis and electrochemical performance of LiNixMn1-xO2 (0 less than or equal x less than or equal 1) cathode material for lithium-ion cell

Abstract

Spherical LiNixMn1-xO2 (0 less than or equal x less than or equal 1) with high tap-density was synthesized from spherical composite carbonate via a simple uniform-phase precipitation method. The effects of different contents of nickel and manganese in samples on morphology, structure and electrochemical performance were discussed. The samples were composed by primary particles and featured comparatively large specific surface area. As confirmed by X-ray diffraction, the samples had well-ordered layer-structure with sharp peak on 006-012 and 008-110. Experimental results demonstrate that the specific capacity of LiNixMn1-xO2 (x = 0.5) is 153 mAh/g with good cycling performance.