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Issue 46, 2017
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Improved Li-storage performance with PEDOT-decorated MnO2 nanoboxes

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In this paper, MnO2 nanoboxes coated with poly(3,4-ethylenedioxythiophene) film (denoted as MnO2@PEDOT) are investigated as an anode material in lithium-ion batteries. The MnO2 nanoboxes are developed through the surface chemical oxidation decomposition of MnCO3 cubes and the subsequent removal of their remaining cores. PEDOT is coated on the surface of MnO2 nanoboxes via in situ polymerization of 3,4-ethylenedioxythiophene. The charge–discharge tests demonstrate that this special configuration endows the resulting MnO2@PEDOT with remarkable electrochemical performances, that is a reversible capacity of 628 mA h g−1 after 850 cycles at a current density of 1000 mA g−1 and a rate capacity of 367 mA h g−1 at 3000 mA g−1. The results indicate that the nanoboxes provide the paths for Li-ion diffusion, the reaction sites for Li-ion intercalation/deintercalation and the space to buffer the volume change during the charge–discharge process, while the conductive polymer ensures the structural stability and improves the electronic conductive property of MnO2.

Graphical abstract: Improved Li-storage performance with PEDOT-decorated MnO2 nanoboxes

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Publication details

The article was received on 01 Aug 2017, accepted on 01 Nov 2017 and first published on 02 Nov 2017

Article type: Paper
DOI: 10.1039/C7NR05654K
Citation: Nanoscale, 2017,9, 18467-18473
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    Improved Li-storage performance with PEDOT-decorated MnO2 nanoboxes

    X. Chen, Z. Cao, L. Xing, Y. Liao, Y. Qiu and W. Li, Nanoscale, 2017, 9, 18467
    DOI: 10.1039/C7NR05654K

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