Oxalate based non-aqueous sol–gel synthesis of phase pure sub-micron LiFePO<sub>4sub>

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• 作者：Y. Sundarayya ; K.C. Kumara Swamy ; C.S. Sun ; ana
• 关键词：A. Nanostructures ; B. Sol– ; gel chemistry ; C. X-ray diffraction ; C. Mö ; ssbauer spectroscopy
• 刊名：Materials Research Bulletin
• 出版年：2007
• 期刊代码：60_00255408
• 类别：ms
• 出版时间：6 November 2007
• 卷：42
• 期：11
• 页码：1942-1948
• 文件大小：474 K

摘要

We report on the synthesis and preliminary characterisation by X-ray diffraction (XRD), scanning electron microscopy (SEM), Mössbauer spectroscopy and infrared spectroscopy (IR) of C-LiFePO<sub>4sub>. Homogeneous sub-micron sized particles of surface carbon coated phase pure LiFePO<sub>4sub> are synthesised by a novel non-aqueous oxalate based sol–gel procedure. Our synthetic route successfully overcomes the incidence of Fe<sup>3+sup>, effectively controls undesirable particle growth and has the potential for upscaling and application as Li-ion battery cathodes.