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Facile synthesis of porous manganese oxide/carbon composite nanowires for energy storage

Abstract

One-dimensional porous nanostructures have attracted tremendous attention for their application in lithium-ion batteries due to their many advantages, including high accessibility to electrolyte, short transport path of Li+, rapid axial transport of electron and superior volume expansion buffer. Herein, we synthesize subtly porous MnO/C composite nanowires by an one-step decomposition and carbonization process of a manganese-base coordination polymer precursorwhich is obtained by hydrothermal approach. MnO nanocrystals are demonstrated strongly anchored and uniformly distributed in porous carbon matrix by Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM) and line-scan elemental analysis. The porous carbon matrix not only improves the electronic connectivity among MnO nanocrystals, but also buffers efficiently the volume expansion during the lithiation/delithiation process. The as-prepared MnO/C composite nanowires exhibit capacity as high as 978.4 mAh/g at the current density of 0.5 A/g and reasonable cyclic performance and rate capability. The reversible capacity is 832 mAh/g after 100 times cycled at 0.5 A/g as well as a rate capability of 782 mAh/g at a current density of 2 A/g.

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Publication details

The article was received on 23 Feb 2017, accepted on 13 Jul 2017 and first published on 13 Jul 2017


Article type: Paper
DOI: 10.1039/C7NJ00646B
Citation: New J. Chem., 2017, Accepted Manuscript
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    Facile synthesis of porous manganese oxide/carbon composite nanowires for energy storage

    J. Xu, Y. Peng, Q. Xia, J. Hu and X. Wu, New J. Chem., 2017, Accepted Manuscript , DOI: 10.1039/C7NJ00646B

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