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Hierarchical porous NiCo2O4 nanosheet arrays directly grown on carbon cloth with superior lithium storage performance

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Abstract

Binary metal oxides have been explored as advanced candidates in lithium-ion battery (LIB) anodes due to their high specific capacity. Herein, the hierarchical structures of porous NiCo2O4 nanosheets directly grown on a conductive carbon cloth substrate (3D NCO-PSA/CC) were obtained by a facile in situ synthetic strategy. When applied as a binder-free LIB anode, it exhibited satisfactory performance with a high discharge capacity (a first discharge capacity of 2090.8 mA h g−1 and a stable capacity of 1687.6 mA h g−1 at 500 mA g−1), superior rate capacity (discharge capacity of 375.5 mA h g−1 at 6000 mA g−1) and excellent reversibility (coulombic efficiency of approximately 100%). The outstanding performances should be attributed to the 3D porous structures, nanosheets and good conductivity of NCO-PSA/CC that could not only ensure the rapid transport of Li+ ions and electrons but also remit the huge volume change during lithiation/delithiation processes. Undoubtedly, the present facile and effective strategy can be extended to other binary metal–oxide materials for use as high-performance energy storage and conversion devices.

Graphical abstract: Hierarchical porous NiCo2O4 nanosheet arrays directly grown on carbon cloth with superior lithium storage performance

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Publication details

The article was received on 19 Feb 2017, accepted on 08 Mar 2017, published on 09 Mar 2017 and first published online on 09 Mar 2017


Article type: Paper
DOI: 10.1039/C7DT00617A
Citation: Dalton Trans., 2017, Advance Article
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    Hierarchical porous NiCo2O4 nanosheet arrays directly grown on carbon cloth with superior lithium storage performance

    L. Zhao, L. Wang, P. Yu, C. Tian, H. Feng, Z. Diao and H. Fu, Dalton Trans., 2017, Advance Article , DOI: 10.1039/C7DT00617A

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