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Seed-assisted smart construction of high mass loading Ni-Co-Mn hydroxide nanoflakes for supercapacitor application

Abstract

Smartly designed nanoarchitectures with effective hybridization of transition metal oxides/hydroxides are promising to realize high performance electrodes for energy storage devices. To promote the applications of high-power supercapacitors, seed-assisted method is firstly applied to prepare mesoporous Ni-Co-Mn hydroxide nanoflakes (NCMH) on nickel foam with practical mass loadings (higher than 5 mg cm-2). Further mechanism study reveals that the Ni(OH)2 nanorod arrays, which are firstly prepared in a hydrothermal process, serve as seeds for the success deposition of NCMH nanoflakes. Through the convenient and cost effective method, this design results in more orderly spatial distribution, lower intrinsic resistance and shorter electron transport pathways. The proof-of-concept application of NCMH as binder-free supercapacitor electrodes reveals an impressive specific capacitance of 7.51 F cm-2 at a high mass loading of 5.2 mg cm-2, exhibiting great potential for energy storage devices and shedding lights on structural design for nanomaterials.

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Publication details

The article was received on 07 May 2017, accepted on 11 Jul 2017 and first published on 11 Jul 2017


Article type: Paper
DOI: 10.1039/C7TA03932H
Citation: J. Mater. Chem. A, 2017, Accepted Manuscript
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    Seed-assisted smart construction of high mass loading Ni-Co-Mn hydroxide nanoflakes for supercapacitor application

    S. Yang, C. Wu, J. Cai, Y. Zhu, H. ZHANG, Y. Lu and K. Zhang, J. Mater. Chem. A, 2017, Accepted Manuscript , DOI: 10.1039/C7TA03932H

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