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Issue 47, 2014
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Aqueous Li-ion cells with superior cycling performance using multi-channeled polyaniline/Fe2O3 nanotube anodes

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Abstract

We developed a Fe2O3-decorated polyaniline (PANI/Fe2O3) multi-channeled nanotube structure as aqueous rechargeable lithium-ion battery (ARLIB) anode using polymerized aniline–Mo3O10 (ANI–Mo3O10) nanowires as the template. The removal of MoOx from the intercalated layered MoOx/PANI structures results in a multi-channeled nanotube structure, and the subsequent hydrothermal growth of Fe2O3 nanoparticles on PANI surface can simultaneously re-dope PANI into a highly conductive form. The multi-channeled nanotube structure allows for sufficient electrolyte impregnation and efficient one-dimensional electron transport, and the decorated Fe2O3 surface layer offers a much extended voltage window of the electrode and improves chemical and electrochemical stability. As a proof-of-concept, the initial discharge and charge capacities of the PANI/Fe2O3 multi-channeled nanotube anode are 60.5 and 54.2 mA h g−1 at a current rate of 150 mA g−1, respectively. When fabricated as an ARLIB full cell with the PANI/Fe2O3 multi-channeled nanotube anode and a LiMn2O4 cathode, an initial discharge capacity of 50.5 mA h g−1 is obtained at the current rate of 150 mA g−1, with superior capacity retention of 73.3% after over 1000 charge/discharge cycles.

Graphical abstract: Aqueous Li-ion cells with superior cycling performance using multi-channeled polyaniline/Fe2O3 nanotube anodes

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Publication details

The article was received on 28 Aug 2014, accepted on 15 Oct 2014 and first published on 15 Oct 2014


Article type: Paper
DOI: 10.1039/C4TA04465G
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J. Mater. Chem. A, 2014,2, 20177-20181

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    Aqueous Li-ion cells with superior cycling performance using multi-channeled polyaniline/Fe2O3 nanotube anodes

    Y. Wang, Y. Wang, J. Tang, Y. Xia and G. Zheng, J. Mater. Chem. A, 2014, 2, 20177
    DOI: 10.1039/C4TA04465G

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