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Magnetic studies of the carbothermal effect on LiFePO4

Abstract : The effect of carbon coating on the properties of LiFePO4 particles is studied from magnetic measurements. Magnetization experiments are an excellent tool to detect very low concentrations of iron-based impurities (< 1 ppm) which are poisoning the phospho-olivine used as positive electrode mate- rial in rechargeable Li-ion batteries. The results indicate that I addition of 5% carbon withdraws traces of the Fe(III) phase such as Fe2P and/or Fe2O3. This carbothermal effect appears to be beneficial for long-term application of LiFePO4 materials in Li-ion batteries. (c) 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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A Ait-Salah, K Zaghib, A Mauger, François Gendron, Christian Julien. Magnetic studies of the carbothermal effect on LiFePO4. physica status solidi (a), Wiley, 2006, 203 (1), pp.R1-R3. ⟨10.1002/pssa.200521452⟩. ⟨hal-01293164⟩



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