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Blending of LiFePO4/C microparticles with different sizes and its effect on the electrochemical performance of LiFePO4/C-based batteries

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Abstract

Blended spherical cathodes of lithium iron phosphate with different morphology were prepared using a physical mixing method. The lithium iron phosphate spherical material with high tapped density and non-spherical lithium iron phosphate material with good processing properties were compounded in different proportions. The processability and electrochemical properties of blended spherical cathodes were systematically investigated. The characterization results suggest that the blended spherical cathode material not only exerts the complementary advantages of the spherical and non-spherical material, but also produces a synergistic effect, which improves the processing property of the spherical material. This unique property reduces the internal resistance of the contact between the particles, thereby reducing the internal resistance of battery and improving the overall performance of battery.

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Funding

This work received financial support from the Natural Science Foundation of Tianjin (grant number 18JCTPJC52800).

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Authors and Affiliations

  1. Institute of Power Source and Ecomaterials Science, Hebei University of Technology, Tianjin, 300130, China

    Lizhi Wen, Xiaoyan Wang, Jiachen Sun, Liwei An, Xin Ren, Zhenfei Li & Guangchuan Liang

  2. Automobile & Rail Transportation School, Tianjin Sino-German University of Applied Sciences, Tianjin, 300350, China

    Lizhi Wen, Xiaoming Liu & Shaozhong Jiang

  3. Qing Gong College, North China University of Science and Technology, Tangshan, 063000, China

    Xiaoyan Wang

  4. Key Laboratory of Special Functional Materials for Ecological Environment and Information (Hebei University of Technology), Ministry of Education, Tianjin, 300130, China

    Guangchuan Liang

  5. Key Laboratory for New Type of Functional Materials in Hebei Province, Hebei University of Technology, Tianjin, 300130, China

    Guangchuan Liang

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  1. Lizhi Wen
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  2. Xiaoyan Wang
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  3. Xiaoming Liu
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  7. Zhenfei Li
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  8. Guangchuan Liang
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  9. Shaozhong Jiang
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Correspondence to Lizhi Wen or Guangchuan Liang.

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Wen, L., Wang, X., Liu, X. et al. Blending of LiFePO4/C microparticles with different sizes and its effect on the electrochemical performance of LiFePO4/C-based batteries. Ionics 25, 5269–5276 (2019). https://doi.org/10.1007/s11581-019-03086-2

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  • DOI: https://doi.org/10.1007/s11581-019-03086-2

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