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Facile synthesis of porous-carbon/LiFePO4 nanocomposites

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Abstract

Porous-carbon/LiFePO4 nanocomposites were synthesized by a simple one-step sol–gel process without a pore-forming agent or ball-milling processes. These nanocomposites retained a specific capacity of 96 mAh g−1 even at a rate as high as 5 C (1 C = 170 mA g−1). Smaller grain size and larger BET surface area induced by the increased carbon matrix do not insure the enhanced electrochemical properties. The optimum carbon content for the highest electrochemical properties is correlated well with the charge-transfer resistance and apparent Li+ diffusivity.

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Acknowledgments

This research was supported by the National Research Foundation of Korea through the Korean Government (MEST: NRF, 2010-0029065) and the World Class University (WCU, R31-2008-000-10075-0).

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Authors and Affiliations

  1. WCU Hybrid Materials Program, Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 151-744, South Korea

    Sungun Wi, Seunghoon Nam, Yuhong Oh, Jongmin Kim, Hongsik Choi, Saeromi Hong, Sujin Byun, Suji Kang & Byungwoo Park

  2. Division of Materials Science and Engineering, College of Engineering, Hanyang University, Seoul, 133-791, South Korea

    Dong Joo Choi, Key-one Ahn & Young-Ho Kim

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  1. Sungun Wi
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  2. Seunghoon Nam
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  3. Yuhong Oh
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  4. Jongmin Kim
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Correspondence to Young-Ho Kim or Byungwoo Park.

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Wi, S., Nam, S., Oh, Y. et al. Facile synthesis of porous-carbon/LiFePO4 nanocomposites. J Nanopart Res 14, 1327 (2012). https://doi.org/10.1007/s11051-012-1327-1

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  • DOI: https://doi.org/10.1007/s11051-012-1327-1

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