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Improved rate capability and cycling stability of bicontinuous hierarchical mesoporous LiFePO4/C microbelts for lithium-ion batteries

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Abstract

Bicontinuous hierarchical mesoporous LiFePO4/C (BHM-LFP/C) microbelts have been synthesized using a simple dual-solvent electrospinning method for the first time. The use of a dual-solvent is beneficial for the electrospinning synthesis, which increases the salt solubility, as well as decreases the surface tension to improve the spinnability. The sample exhibits a high reversible capacity (153 mA h g−1 at 0.5C), and achieves an excellent high rate cycling performance. The enhanced electrochemical performance can be attributed to the unique microbelts providing bicontinuous electron/ion pathways, and the thoroughly mesoporous structure facilitating electrolyte penetration, especially for hierarchical architectures, which have three-dimensional diffusion channels for Li+. This method can be extended to fabricate other electrospun multi-element oxide cathode materials for advanced lithium-ion batteries.

Graphical abstract: Improved rate capability and cycling stability of bicontinuous hierarchical mesoporous LiFePO4/C microbelts for lithium-ion batteries

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Publication details

The article was received on 14 Jul 2017, accepted on 25 Sep 2017 and first published on 09 Oct 2017


Article type: Paper
DOI: 10.1039/C7NJ02554H
Citation: New J. Chem., 2017, Advance Article
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    Improved rate capability and cycling stability of bicontinuous hierarchical mesoporous LiFePO4/C microbelts for lithium-ion batteries

    Y. Zhang, Y. Huang, Y. Tang, H. Zhao, Y. Cai, X. Wang, Y. Guo, D. Jia and J. Zong, New J. Chem., 2017, Advance Article , DOI: 10.1039/C7NJ02554H

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