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Issue 12, 2017
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Electrochemical performance of Na0.6[Li0.2Ni0.2Mn0.6]O2 cathodes with high-working average voltage for Na-ion batteries

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Abstract

Na0.6[Li0.2Ni0.2Mn0.6]O2 is synthesized by a self-combustion reaction (SCR) and studied for the first time as a cathode material for Na-ion batteries. The Na0.6[Li0.2Ni0.2Mn0.6]O2 cathode presents remarkable high rate capability and prolonged stability under galvanostatic cycling. A detailed analysis of X-ray diffraction (XRD) patterns at various states of cycling reveals that the excellent structural stability is due to a primarily solid-solution sodiation/desodiation mechanism of the material during cycling. Moreover, a meaningful comparison with Na0.6MnO2 and Na0.6[Li0.2Mn0.8]O2 reveals that the Na0.6[Li0.2Ni0.2Mn0.6]O2 cathode achieves a very high working-average voltage that outperforms most of the lithium-doped manganese-oxide cathodes published to date.

Graphical abstract: Electrochemical performance of Na0.6[Li0.2Ni0.2Mn0.6]O2 cathodes with high-working average voltage for Na-ion batteries

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Publication details

The article was received on 09 Dec 2016, accepted on 26 Feb 2017 and first published on 27 Feb 2017


Article type: Paper
DOI: 10.1039/C6TA10577G
Citation: J. Mater. Chem. A, 2017,5, 5858-5864
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    Electrochemical performance of Na0.6[Li0.2Ni0.2Mn0.6]O2 cathodes with high-working average voltage for Na-ion batteries

    E. de la Llave, P. K. Nayak, E. Levi, T. R. Penki, S. Bublil, P. Hartmann, F. Chesneau, M. Greenstein, L. F. Nazar and D. Aurbach, J. Mater. Chem. A, 2017, 5, 5858
    DOI: 10.1039/C6TA10577G

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