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Issue 2, 2014
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Improving the electrochemical performance of layered lithium-rich transition-metal oxides by controlling the structural defects

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Abstract

We report the electrochemical properties of layered lithium-rich Li1.2Mn0.54Ni0.13Co0.13O2 cathode materials with various degrees of stacking faults, which are prepared via a facile molten-salt method using a variety of fluxes including KCl, Li2CO3, and LiNO3. The frequency of the stacking faults is highly dependent on the temperature and molten salt type used during the synthesis. A well-crystallized Li1.18Mn0.54Ni0.13Co0.13O2 nanomaterial with a larger amount of stacking faults synthesized at 800 °C for 10 h in an inactive KCl flux delivers a high reversible capacity of ∼310 mA h g−1 at room temperature, while the samples prepared in the chemically active fluxes with a smaller amount of stacking faults show poor electrochemical performance.

Graphical abstract: Improving the electrochemical performance of layered lithium-rich transition-metal oxides by controlling the structural defects

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Publication details

The article was received on 17 May 2013, accepted on 08 Nov 2013 and first published on 11 Nov 2013


Article type: Paper
DOI: 10.1039/C3EE41664J
Citation: Energy Environ. Sci., 2014,7, 705-714
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    Improving the electrochemical performance of layered lithium-rich transition-metal oxides by controlling the structural defects

    J. Liu, M. Hou, J. Yi, S. Guo, C. Wang and Y. Xia, Energy Environ. Sci., 2014, 7, 705
    DOI: 10.1039/C3EE41664J

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