Abstract
Li[Cr x Li (1− x)/3 Mn 2(1− x)/3 ]O 2 with x = 0, 0.05, 0.1 and 0.328 were synthesized by a solution method with subsequent quenching. The structures were investigated by X-ray diffraction (XRD), Rietveld refinement, electron diffraction and HRTEM. Li[Cr x Li (1− x)/3 Mn 2(1− x)/3 ]O 2 ( x = 0 and 0.05) and annealed Li[Li 1/3Mn 2/3]O 2 were indexed based on the monoclinic structure, while Li 1.2Cr 0.4Mn 0.4O 2 was shown to be that of a nanocomposite. Li[Cr 0.1Li 0.29Mn 0.602]O 2 material formed based on the stoichiometry in between Li[Li 1/3Mn 2/3]O 2 and Li[Cr 0.328Li 0.22Mn 0.436]O 2 showed both sides features of the monoclinic and hexagonal structures in a nanocomposite structure and provided the lack of a developed anodic peak between 4.6 and 4.9 V, a good reversible capacity of around 250 mAh/g in a discharge voltage range between 2.8 and 3.5 V.
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