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Issue 47, 2016
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Superstructure ZrV2O7 nanofibres: thermal expansion, electronic and lithium storage properties

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Abstract

ZrV2O7 has attracted much attention as a negative thermal expansion (NTE) material due to its isotropic negative structure. However, rarely has investigation of the lithium storage behaviors been carried out except our first report on it. Meanwhile, the electrochemical behaviors and energy storage characteristics have not been studied in depth and will be explored in this article. Herein, we report on the synthesis, characterization and lithium intercalation mechanism of superstructure ZrV2O7 nanofibres that were prepared through a facile solution-based method with a subsequent annealing process. The thermal in situ XRD technique combined with the Rietveld refinement method is adopted to analyze the change in the temperature-dependent crystal structure. Benefiting from the nanostructured morphology and relatively high electronic conductivity, it presents acceptable cyclic stability and rate capability. According to the operando evolution of the XRD patterns obtained from electrochemical in situ measurements, the Li intercalation mechanism of the solid solution process with a subsequent conversion reaction can be concluded. Finally, the amorphous state of the electrodes after the initial fully discharged state can effectively enhance the electrochemical performances.

Graphical abstract: Superstructure ZrV2O7 nanofibres: thermal expansion, electronic and lithium storage properties

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Publication details

The article was received on 17 Aug 2016, accepted on 17 Oct 2016 and first published on 17 Oct 2016


Article type: Paper
DOI: 10.1039/C6CP05694F
Citation: Phys. Chem. Chem. Phys., 2016,18, 32160-32168
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    Superstructure ZrV2O7 nanofibres: thermal expansion, electronic and lithium storage properties

    Q. Li, Y. Zhao, Q. Kuang, Q. Fan, Y. Dong and X. Liu, Phys. Chem. Chem. Phys., 2016, 18, 32160
    DOI: 10.1039/C6CP05694F

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