Nanoscopic scale studies of LiFePO4 as cathode material in lithium-ion batteries for HEV application |
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| Authors: | C. M. Julien A. Mauger A. Ait-Salah M. Massot F. Gendron K. Zaghib |
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| Affiliation: | (1) Institut des Nano-Sciences de Paris, UMR 7588, Université Pierre et Marie Curie, 140 rue de Lourmel, 75015 Paris, France;(2) Département Mathématiques, Physique, Planète et Univers, CNRS, 140 rue de Lourmel, 75015 Paris, France;(3) Institut de Minéralogie et Physique de la Matière Condensée, UMR 7590, Université Pierre et Marie Curie, 4 place Jussieu, 75252 Paris cedex 05, France;(4) Institut de Recherches d’Hydro-Québec, 1800 Boul. Lionel-Boulet, Varennes, Québec, Canada, J3X 1S1 |
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| Abstract: | ![]()
We present a review of the structural properties of LiFePO4. Depending on the mode of preparation, different impurities can poison this material. These impurities are identified and a quantitative estimate of their concentrations is deduced from the combination of X-ray diffraction analysis, Fourier transform infrared spectroscopy, Raman spectroscopy, and magnetic measurements. An optimized preparation provides samples with carbon-coated particles free of any impurity phase, insuring structural stability and electrochemical performance that justify the use of this material as a cathode element a new generation of lithium secondary batteries. |
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| Keywords: | Lithium iron phosphate Li-ion batteries Intercalation compounds Materials preparations Electrochemical stabilities |
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