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Comparative Study and Electrochemical Properties of LiFePO4F Synthesized by Different Routes
Ist Teil von
Bulletin of the Korean Chemical Society, 2012, 33(7), , pp.2315-2319
Ort / Verlag
대한화학회
Erscheinungsjahr
2012
Quelle
EZB Electronic Journals Library
Beschreibungen/Notizen
To improve the performance of LiFePO4F, a novel sol-gel process is developed. For comparison, ceramic process is also implemented. From X-ray diffraction results we know that each sample adopts a triclinic P1 space group, and they are isostructural with amblygonite and tavorite. The scanning electron microscope images show that the homogeneous grains with the dimension of 300-500 nm is obtained by the sol-gel process; meanwhile the sample particles obtained by ceramic process are as big as 1000-3000 nm. By galvanostatic tests and at electrochemical impedance spectroscopy method, the sample obtained by sol-gel process presents better electrochemical properties than the one obtained by ceramic process. KCI Citation Count: 11