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Issue 44, 2016
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A flexible ternary oxide based solid-state supercapacitor with excellent rate capability

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Abstract

A porous vanadium doped-zinc–nickel–cobalt ternary oxide (VZnNiCo) nanostructure is presented for a high performance flexible supercapacitor (SC). The symmetric solid-state SC demonstrated a remarkable enhancement in the capacitive response as compared to SCs based on its individual oxide constituents e.g. NiCo2O4//NiCo2O4 or ZnNiCo//ZnNiCo. A synergistic redox reaction from all the ions was offered to increase the capacitive response and moreover, direct growth of the unique porous nanostructure on a flexible current collector exhibited excellent ion-diffusion efficiency with a high electrochemically active surface area. The flexible SC demonstrated excellent capacitive response stability towards large mechanical deformations for a much higher scan rate up to 5000 mV s−1 in addition to high cycling stability. Hence, the present work opens novel avenues towards exploiting hybrid flexible energy storage devices that are mechanically robust with a highly stable capacitive ability at a much higher scan rate.

Graphical abstract: A flexible ternary oxide based solid-state supercapacitor with excellent rate capability

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Publication details

The article was received on 09 Sep 2016, accepted on 13 Oct 2016 and first published on 14 Oct 2016


Article type: Paper
DOI: 10.1039/C6TA07829J
Citation: J. Mater. Chem. A, 2016,4, 17552-17559
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    A flexible ternary oxide based solid-state supercapacitor with excellent rate capability

    B. D. Boruah and A. Misra, J. Mater. Chem. A, 2016, 4, 17552
    DOI: 10.1039/C6TA07829J

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