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High-capacity cathode for lithium-ion battery from LiFePO4/(C + Fe2P) composite nanofibers by electrospinning

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Abstract

Lithium iron phosphate/(carbon and ferrous phosphide) (LiFePO4/(C + Fe2P)) composite nanofibers are successfully synthesized by electrospinning and subsequent heat-treatment. We develop a novel aqueous solution with excellent spinnability, which contains dihydrogen phosphate, ferric citrate, and polymer. Heat-treatment temperature makes great effect on the product morphology and the formation of Fe2P phase. The Fe2P phase appears when the temperature increases to 750 °C, while too high treatment temperature of 850 °C results in the destruction of fibrous morphology. The LiFePO4/(C + Fe2P) composite nanofibers synthesized using the temperature of 750 and 800 °C show high capacity for lithium-ion battery, possibly attributed to the small fiber diameter and good conductivity enhanced by Fe2P and carbon species.

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Acknowledgements

The work was financially supported by NSFC 51102064 and Shenzhen Bureau of Science, Technology and Innovation Commission (JC201005260171A, JCYJ20120613134244467, and CXZZ20120613141143842).

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Authors and Affiliations

  1. Department of Materials Science and Engineering, Shenzhen Engineering Lab of Flexible Transparent Conductive Films, Shenzhen Key Laboratory of Advanced Materials, Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen, China

    Yejun Qiu, Yanhui Geng & Jie Yu

  2. Shenzhen State High-tech Industrial Innovation Center, Digital Tech Zone A1-L6, High-tech Park, Nanshan District, Shenzhen, China

    **nbing Zuo

Authors
  1. Yejun Qiu
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  2. Yanhui Geng
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  3. Jie Yu
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  4. **nbing Zuo
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Corresponding authors

Correspondence to Yejun Qiu or **nbing Zuo.

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Qiu, Y., Geng, Y., Yu, J. et al. High-capacity cathode for lithium-ion battery from LiFePO4/(C + Fe2P) composite nanofibers by electrospinning. J Mater Sci 49, 504–509 (2014). https://doi.org/10.1007/s10853-013-7727-5

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  • DOI: https://doi.org/10.1007/s10853-013-7727-5

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