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Novel rapid synthesis method of LiFePO 4 /C cathode material by high-frequency induction heating

Novel rapid synthesis method of LiFePO 4 /C cathode material by high-frequency induction heating 1 Introduction</h5> Lithium iron phosphate (LiFePO 4 ), which has an olivine-type structure reported by Padhi et al. [1] , is an attractive cathode material for Li-ion batteries due to such good electrochemical characteristics as flat potential around 3.5 V vs. Li/Li + for Li insertion/extraction and a theoretical capacity of 170 mAh g −1 with long cycle stability, high thermal stability, and low environmental impact. LiFePO 4 is also an excellent material from the viewpoint of an elemental strategy because it contains absolutely no rare metals [2] . Low electronic conductivity [3] and low Li-ion diffusivity [4] , both of which cause low battery performances of LiFePO 4 , have already been improved by modifying the surface of LiFePO 4 particles with carbon and decreasing the particle size [5–8] . The advantage of the LiFePO 4 cathode material described above may significantly reduce the costs and extend the cycle life of Li-ion batteries. Therefore, Li-ion batteries, including LiFePO 4 modified with carbon (LiFePO 4 /C) [9,10] as a cathode, are especially suitable for such large scale applications as electric vehicles (EVs), hybrid electric vehicles (HEVs), and large storage systems for natural energy generation like wind or solar http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Power Sources Elsevier
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