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Effect of different carbon conductive additives on electrochemical properties of LiFePO4-C/Li batteries

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Abstract

LiFePO4-C nanoparticles were synthesized by a hydrothermal method and subsequent high-energy ball-milling. Different carbon conductive additives including nanosized acetylene black (AB) and multi-walled carbon nanotube (MWCNT) were used to enhance the electronic conductivity of LiFePO4. The structural and morphological performance of LiFePO4-C nanoparticles was investigated by X-ray diffraction (XRD) and scanning electron microscopy. The electrochemical properties of LiFePO4-C/Li batteries were analyzed by cyclic voltammetry and charge/discharge tests. XRD results demonstrate that LiFePO4-C nanoparticles have an orthorhombic olivine-type structure with a space group of Pnma. LiFePO4-C/Li battery with 5 wt% MWCNT displays the best electrochemical properties with a discharge capacity of 142 mAh g−1 at 0.25 C at room temperature.

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Acknowledgments

This research project received supporting funds from the second-stage Brain Korea 21.

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Authors and Affiliations

  1. College of Materials Science and Engineering, Jilin University, Changchun, 130025, China

    Bo Jin, Wanxi Zhang & Guangping Sun

  2. Department of Electrical Engineering, Chonnam National University, Gwangju, 500-757, South Korea

    Bo Jin, Hal-Bon Gu & Kyung-Hee Park

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  1. Bo Jin
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  2. Hal-Bon Gu
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  3. Wanxi Zhang
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  4. Kyung-Hee Park
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  5. Guangping Sun
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Correspondence to Bo Jin.

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Jin, B., Gu, HB., Zhang, W. et al. Effect of different carbon conductive additives on electrochemical properties of LiFePO4-C/Li batteries. J Solid State Electrochem 12, 1549–1554 (2008). https://doi.org/10.1007/s10008-008-0509-3

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  • DOI: https://doi.org/10.1007/s10008-008-0509-3

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