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| Home > Publications database > In Operando Synchrotron Diffraction and in Operando X-ray Absorption Spectroscopy Investigations of Orthorhombic $\mathrm{V_{2}O_{5}}$ Nanowires as Cathode Materials for Mg-Ion Batteries |
| Home > Publications database > In Operando Synchrotron Diffraction and in Operando X-ray Absorption Spectroscopy Investigations of Orthorhombic $\mathrm{V_{2}O_{5}}$ Nanowires as Cathode Materials for Mg-Ion Batteries |
| Journal Article | PUBDB-2019-01275 |
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2019
American Chemical Society
Washington, DC
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Please use a persistent id in citations: doi:10.1021/jacs.8b08998 doi:10.3204/PUBDB-2019-01275
Abstract: Orthorhombic $\mathrm{V_{2}O_{5}}$ nanowires were successfully synthesized via a hydrothermal method. A cell-configuration system was built utilizing $\mathrm{V_{2}O_{5}}$ as the cathode and 1 M Mg(ClO$_4$)$_2$ electrolyte within acetonitrile, together with Mg$_x$Mo$_6$S$_8$ (x ≈ 2) as the anode to investigate the structural evolution and oxidation state and local structural changes of $\mathrm{V_{2}O_{5}}$. The $\mathrm{V_{2}O_{5}}$ nanowires deliver an initial discharge/charge capacity of 103 mAh g$^{–1}$/110 mAh g$^{–1}$ and the highest discharge capacity of 130 mAh g$^{–1}$ in the sixth cycle at C/20 rate in the cell-configuration system. In operando synchrotron diffraction and in operando X-ray absorption spectroscopy together with ex situ Raman and X-ray photoelectron spectroscopy reveal the reversibility of magnesium insertion/extraction and provide information on the crystal structure evolution and changes of the oxidation states during cycling.
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