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Co(OH)2@MnO2 nanosheet arrays as hybrid binder free electrode for high performance lithium-on battery and Supercapacitor

Abstract

Co(OH)2@MnO2 nanosheet arrays were directly grown on nickel foam by two-step electrodeposition method with subsequent heat treatment at 170 oC. The hybrid electrode, where the electrodeposited Co(OH)2 and MnO2 nanosheets were inlayed with each other, and employed as binder free anode material for lithium-ion battery (LIB) and electrode for super capacitor (SC). For both application: LIB and SC, the Co(OH)2@MnO2 nanosheet electrode exhibited appreciable cycling stability with high specific capacity as well as specific capacitance and rate capability. The excellent electrochemical performances of this hybrid nanosheets electrode were probably ascribed to their unique 3D architecture which provides large active sites for efficient electrochemical reactions, and the synergistic effects of the two active materials. The electrodeposition method appears to be suitable for fabrication of binder-free, nanostructured, hybrid arrays, and as demonstrated here the Co(OH)2@MnO2 nanosheet could potentially be used as high-performance LIB and SC electrode material.

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Publication details

The article was received on 21 Sep 2018, accepted on 16 Nov 2018 and first published on 19 Nov 2018


Article type: Paper
DOI: 10.1039/C8NJ04816A
Citation: New J. Chem., 2018, Accepted Manuscript
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    Co(OH)2@MnO2 nanosheet arrays as hybrid binder free electrode for high performance lithium-on battery and Supercapacitor

    M. Kundu, G. Singh and A. M. Svensson, New J. Chem., 2018, Accepted Manuscript , DOI: 10.1039/C8NJ04816A

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