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Issue 20, 2017
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A binder-free wet chemical synthesis approach to decorate nanoflowers of bismuth oxide on Ni-foam for fabricating laboratory scale potential pencil-type asymmetric supercapacitor device

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Abstract

The present study involves the synthesis of a bismuth oxide (Bi2O3) electrode consisting of an arranged nano-platelets for evolving a flower-type surface appearance on nickel-foam (Bi2O3–Ni–F) by a simple, inexpensive, binder-free and one-step chemical bath deposition (CBD) method, popularly known as a wet chemical method. The as-prepared Bi2O3 on Ni-foam, as an electrode material, demonstrates 557 F g−1 specific capacitance (SC, at 1 mA cm−2), of which 85% is retained even after 2000 cycles. With specific power density of 500 kW kg−1, the Bi2O3–Ni–F electrode documents a specific energy density of 80 Wh kg−1. Furthermore, a portable asymmetric supercapacitor device, i.e. a pencil-type cell consisting of Bi2O3–Ni–F as an anode and graphite as a cathode in 6 M KOH aqueous electrolyte solution, confirms 11 Wh kg−1 and 720 kW kg−1 specific energy and specific power densities, respectively. An easy and a simple synthesis approach for manufacturing a portable laboratory scale pencil-type supercapacitor device is a major outcome of this study, which can also be applied for ternary and quaternary metal oxides for recording an enhanced performance. In addition, we presented a demonstration of lighting a light emitting diode (LED) using a home-made pencil-type supercapacitor device which, finally, has confirmed the scaling and technical potentiality of Bi2O3–Ni–F in energy storage devices.

Graphical abstract: A binder-free wet chemical synthesis approach to decorate nanoflowers of bismuth oxide on Ni-foam for fabricating laboratory scale potential pencil-type asymmetric supercapacitor device

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Publication details

The article was received on 16 Mar 2017, accepted on 08 Apr 2017 and first published on 10 Apr 2017


Article type: Paper
DOI: 10.1039/C7DT00953D
Citation: Dalton Trans., 2017,46, 6601-6611
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    A binder-free wet chemical synthesis approach to decorate nanoflowers of bismuth oxide on Ni-foam for fabricating laboratory scale potential pencil-type asymmetric supercapacitor device

    N. M. Shinde, Q. X. Xia, J. M. Yun, S. Singh, R. S. Mane and K. Kim, Dalton Trans., 2017, 46, 6601
    DOI: 10.1039/C7DT00953D

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