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Issue 20, 2014
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A maize-like FePO4@MCNT nanowire composite for sodium-ion batteries via a microemulsion technique

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Abstract

In this study, a microemulsion technique was applied to prepare an in situ self-assembled core–shell FePO4@MCNT nanowire composite as a cathode material for sodium-ion batteries. Multi-walled carbon nanotubes (MCNTs) were uniformly dispersed using Triton X-100 as a surfactant in the microemulsion system. Subsequently, amorphous FePO4 nanoparticles with a diameter of 10–20 nm were loaded onto the surface of MCNTs during the synthetic process, forming an FePO4@MCNT nanowire composite with three-dimensional mixed conducting networks, with a structure resembling maize. The resulting products were collected by centrifugation and washed three times, and sintered under an N2 atmosphere at 460 °C for 3 h. The discharge specific capacity of FePO4@MCNT was 155.2 mA h g−1 in the initial cycle, which was maintained at 157.2 mA h g−1 after 70 cycles at 0.1 C. The discharge specific capacity at 0.3 C, 0.5 C, and 1.0 C was 133.2 mA h g−1, 122.2 mA h g−1, and 75.3 mA h g−1, respectively, in the range of 1.5–4.2 V. The results show that FePO4@MCNT nanowires are promising candidates as cathode materials in sodium-ion batteries.

Graphical abstract: A maize-like FePO4@MCNT nanowire composite for sodium-ion batteries via a microemulsion technique

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Publication details

The article was received on 15 Jan 2014, accepted on 28 Feb 2014 and first published on 28 Feb 2014


Article type: Paper
DOI: 10.1039/C4TA00239C
Author version available: Download Author version (PDF)
Citation: J. Mater. Chem. A, 2014,2, 7221-7228
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    A maize-like FePO4@MCNT nanowire composite for sodium-ion batteries via a microemulsion technique

    S. Xu, S. Zhang, J. Zhang, T. Tan and Y. Liu, J. Mater. Chem. A, 2014, 2, 7221
    DOI: 10.1039/C4TA00239C

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