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. Issue 20 (3rd May 2017)

• Record Type: Journal Article
• Authors: Shinde, N. M.; Xia, Qi Xun; Yun, Je Moon; Singh, Saurabh; Mane, Rajaram S.; Kim, Kwang-Ho
• Is Part Of: Dalton transactions. Volume 46:Issue 20(2017)
• Page Start: 6601
• Page End: 6611
• Publication Date: 2017-05-03
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c7dt00953d
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : The synthesis and asymmetric supercapacitor application of a bismuth oxide (Bi2 O3 ) electrode consisting of arranged nano-platelets for evolving a flower-type surface appearance on nickel-foam (Bi2 O3 –Ni–F) are described. Abstract : The present study involves the synthesis of a bismuth oxide (Bi2 O3 ) electrode consisting of an arranged nano-platelets for evolving a flower-type surface appearance on nickel-foam (Bi2 O3 –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 Bi2 O3 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 Bi2 O3 –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 Bi2 O3 –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 Bi2 O3 –Ni–F in energy storage devices.