Characterisation of olivine-type LiMn<inf>x</inf>Fe<inf>1-x</inf>PO<inf>4</inf> cathode materials

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Journal Article
Journal of Alloys and Compounds, 2006, 425 (1-2), pp. 362 - 366
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A series of LiMnxFe1-xPO4 (x = 0, 0.1, 0.3, 0.5, 0.7, 0.9, 1) compounds were synthesised by a sol-gel preparation route. X-ray diffraction and Rietveld structure refinement revealed that the lattice parameters (a, b and c) of orthorhombic LiMnxFe1-xPO4 increase with increasing Mn content. Magnetic susceptibility measurements show antiferromagnetic behaviour for LiMnxFe1-xPO4 samples. The electrochemical properties of LiMnxFe1-xPO4 as cathodes in lithium-ion cells were tested via cyclic voltammetry and galvanostatic charge/discharge measurements. The electrochemical performance of LiMnxFe1-xPO4 degrades with increasing Mn content. © 2006 Elsevier B.V. All rights reserved.
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