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Abstract. The demand for high power density and low cost material for lithium-ion battery is very high. Commercially available material, such as LiCoO2, has limited capacity and high cost; this has caused the exploration of alternative materials. In this paper, Mn doped into Li[NixC%_• 2 host structure was prepared by a mixed hydroxide technique. XRD results show that the synthesized powder has a higher degree of crystallinity with the separation between the (108) and (110) peaks being more obvious for Mn doped powder. The morphology of synthesized powder, determined by Field Effect Scanning Electron Microscope (FE-SEM), shows that both samples having multi-angle particle shapes. Energy Dispersive X-ray (EDAX) analysis shows that all the expected elements were present in the synthesized materials. Cyclic voltammogram (CV) of the investigated samples show that the onset of the Jahn-Teller effect was shifted to the higher voltage when the Li[Ni 0 ~Co02]02 was doped with Mn, and has improved the cycle performance.

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