Dependence of average and local structures and cathode performance on synthetic condition of Lix(Mn1/3Co1/3Ni 1/3)O2 as a cathode active material for Li ion battery

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Abstract

We investigated the average, local and electronic structures of LiMn 1/3Ni1/3Co1/3O2 prepared by various methods. Their electrode characteristics were also studied by charge-discharge test. As a result, it was demonstrated that the sample synthesized by solution method exhibited the most excellent cycle performance. In order to clarify how the preparation processes affected on the crystal structures in detail, local structure, i.e. cation mixing and transition-metal ordering, in the samples were analyzed by Pair Distribution Function (PDF) method using a neutron source and X-ray absorption fine structure measurements. From this analysis, it was found that the local structure in LiMn1/3Ni1/3Co 1/3O2 depended on the preparation process. Such a difference in the local structures may result in different cathode properties among the samples synthesized.

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Idemoto, Y., Ueki, K., & Kitamura, N. (2010). Dependence of average and local structures and cathode performance on synthetic condition of Lix(Mn1/3Co1/3Ni 1/3)O2 as a cathode active material for Li ion battery. In Electrochemistry (Vol. 78, pp. 475–481). Electrochemical Society of Japan. https://doi.org/10.5796/electrochemistry.78.475

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