Abstract
Cathode material LiMn 2− y Co y O 4 spinels were prepared by annealing the mixed precursors, which were synthesized by a low heating solid state coordination method using lithium acetate, manganese acetate, cobalt acetate, and oxalic acid as original materials. The structures and morphologies of the LiMn 2− y Co y O 4 spinels were investigated as a function of annealing temperature and time. The results showed that all samples in different annealing temperature and time had the same spinel structure. There were some growth and agglomeration in the particles when annealing temperature increased from 450 to 650 °C. And the crystal structure was more perfect at the upper temperature. In addition, the electrochemical properties of LiMn 2− y Co y O 4 spinels used as cathode material for lithium-ion batterries were studied in detail in this paper.
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