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Issue 12, 2012
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Growth of single-crystal copper sulfide thin films viaelectrodeposition in ionic liquid media for lithium ion batteries

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Abstract

By exploiting the ability of ionic liquids to solubilize molecular sulfur at the melting point, we report the electrodeposition of CuS in an [EMIm]TFSI (1-ethyl-3-methylimidazolium bis (trifluoromethanesulfonyl) imide) electrolytic bath containing Cu(TFSI)2 salt and elemental sulfur. Single-crystal and preferentially oriented covellite CuS thin films with flake morphology have been successfully obtained. Li/CuS coin cells using the deposits after carbon coating as the positive electrode show a discharge capacity of 350 mA h g−1 with capacity retention of 54.4% after 20 cycles.

Graphical abstract: Growth of single-crystal copper sulfide thin films viaelectrodeposition in ionic liquid media for lithium ion batteries

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Publication details

The article was received on 19 Dec 2011, accepted on 02 Feb 2012 and first published on 14 Feb 2012


Article type: Communication
DOI: 10.1039/C2JM16692E
Citation: J. Mater. Chem., 2012,22, 5295-5299
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    Growth of single-crystal copper sulfide thin films viaelectrodeposition in ionic liquid media for lithium ion batteries

    Y. Chen, C. Davoisne, J. Tarascon and C. Guéry, J. Mater. Chem., 2012, 22, 5295
    DOI: 10.1039/C2JM16692E

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