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Insertion properties of LiFe0.5Mn0.5PO4 electrode materials for Li-ion batteries

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Abstract

This paper addresses the synthesis structural and electrochemical properties of LiFe0.5Mn0.5PO4 electrode materials for Li-ion batteries. The charge–discharge reaction of Li/LiPF6-EC–DEC/LiFe0.5Mn0.5PO4 cell carried out at the 1-C rate shows a capacity retention of 128 mAh/g. The local structure of the delithiated Li x Fe0.5Mn0.5PO4 phases have been studied by Fourier transform infrared spectroscopy and magnetometry. Spectral features indicate that the structure of the delithiated phase remains in the orthorhombic system. The compositional dependence of the magnetic moment is found to be in quantitative agreement with the theoretical value predicted for oxidation of M 2+ ions in the high spin state.

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Authors and Affiliations

  1. Institut de Recherche Hydro-Québec, 1800 boul. Lionel-Boulet, Varennes, Quebec, J3X 1 S1, Canada

    K. Zaghib

  2. Institut de Minéralogie et Physique de la Matière Condensée, UMR 7590, Université P. et M. Curie, Campus Boucicaut, 140 rue de Lourmel, 75015, Paris, France

    A. Mauger & M. Massot

  3. Institut des Nanosciences de Paris, UMR7588, Université Paris 6, 140 rue de Lourmel, 75015, Paris, France

    F. Gendron & C. M. Julien

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  1. K. Zaghib
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  2. A. Mauger
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  3. F. Gendron
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  4. M. Massot
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  5. C. M. Julien
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Correspondence to C. M. Julien.

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Zaghib, K., Mauger, A., Gendron, F. et al. Insertion properties of LiFe0.5Mn0.5PO4 electrode materials for Li-ion batteries. Ionics 14, 371–376 (2008). https://doi.org/10.1007/s11581-008-0231-2

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  • DOI: https://doi.org/10.1007/s11581-008-0231-2

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