Continuous Nanobelts of Nickel Oxide-Cobalt Oxide Hybrid With Improved Capacitive Charge Storage Properties

This paper reports the synthesis of continuous nanobelts, whose thickness is less than half of its pore diameter, of a material hybrid composing of nanograins of nickel oxide and cobalt oxide by electrospinning technique and their capacitive charge storage properties. While the constituent binary me...

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Main Authors: Harilal, Midhun, Syam, G. Krishnan, Lathakumary Vijayan, Binci, M., Venkatashamy Reddy, Adams, Stefan, Barron, Andrew R., M. M., Yusoff, Rajan, Jose
Format: Article
Language:English
Published: Elsevier Ltd 2017
Subjects:
Online Access:http://umpir.ump.edu.my/id/eprint/17447/1/fit-2017-rajan-Continuous%20nanobelts%20of%20nickel1.pdf
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author Harilal, Midhun
Syam, G. Krishnan
Lathakumary Vijayan, Binci
M., Venkatashamy Reddy
Adams, Stefan
Barron, Andrew R.
M. M., Yusoff
Rajan, Jose
author_facet Harilal, Midhun
Syam, G. Krishnan
Lathakumary Vijayan, Binci
M., Venkatashamy Reddy
Adams, Stefan
Barron, Andrew R.
M. M., Yusoff
Rajan, Jose
author_sort Harilal, Midhun
collection UMP
description This paper reports the synthesis of continuous nanobelts, whose thickness is less than half of its pore diameter, of a material hybrid composing of nanograins of nickel oxide and cobalt oxide by electrospinning technique and their capacitive charge storage properties. While the constituent binary metal oxides (NiO and Co3O4) formed solid cylindrical nanofibers the hybrid and a stoichiometric compound in the Ni-Co-O system, i.e., spinel-type NiCo2O4, formed as thin nanobelts due to the magnetic interaction between nickel and cobalt ions. The nanobelts showed six-fold larger surface area, wider pores, and impressive charge storage capabilities compared to the cylindrical fibres. The hybrid nanobelts showed high specific capacitance (CS ~ 1250 F g− 1 at 10 A g− 1 in 6 M KOH) with high capacity retention, which is appreciably larger than found for the stoichiometric compound (~ 970 F g− 1 at 10 A g− 1). It is shown that the hybrid nanobelts have lower internal resistance (1.3 Ω), higher diffusion coefficient (4.6 × 10− 13 cm2 s− 1) and smaller relaxation time (0.03 s) than the benchmark materials studied here.
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spelling UMPir174472018-07-26T07:45:52Z http://umpir.ump.edu.my/id/eprint/17447/ Continuous Nanobelts of Nickel Oxide-Cobalt Oxide Hybrid With Improved Capacitive Charge Storage Properties Harilal, Midhun Syam, G. Krishnan Lathakumary Vijayan, Binci M., Venkatashamy Reddy Adams, Stefan Barron, Andrew R. M. M., Yusoff Rajan, Jose QC Physics QD Chemistry TK Electrical engineering. Electronics Nuclear engineering This paper reports the synthesis of continuous nanobelts, whose thickness is less than half of its pore diameter, of a material hybrid composing of nanograins of nickel oxide and cobalt oxide by electrospinning technique and their capacitive charge storage properties. While the constituent binary metal oxides (NiO and Co3O4) formed solid cylindrical nanofibers the hybrid and a stoichiometric compound in the Ni-Co-O system, i.e., spinel-type NiCo2O4, formed as thin nanobelts due to the magnetic interaction between nickel and cobalt ions. The nanobelts showed six-fold larger surface area, wider pores, and impressive charge storage capabilities compared to the cylindrical fibres. The hybrid nanobelts showed high specific capacitance (CS ~ 1250 F g− 1 at 10 A g− 1 in 6 M KOH) with high capacity retention, which is appreciably larger than found for the stoichiometric compound (~ 970 F g− 1 at 10 A g− 1). It is shown that the hybrid nanobelts have lower internal resistance (1.3 Ω), higher diffusion coefficient (4.6 × 10− 13 cm2 s− 1) and smaller relaxation time (0.03 s) than the benchmark materials studied here. Elsevier Ltd 2017-03-08 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/17447/1/fit-2017-rajan-Continuous%20nanobelts%20of%20nickel1.pdf Harilal, Midhun and Syam, G. Krishnan and Lathakumary Vijayan, Binci and M., Venkatashamy Reddy and Adams, Stefan and Barron, Andrew R. and M. M., Yusoff and Rajan, Jose (2017) Continuous Nanobelts of Nickel Oxide-Cobalt Oxide Hybrid With Improved Capacitive Charge Storage Properties. Materials & Design, 122. pp. 376-384. ISSN 0264-1275. (Published) http://doi.org/10.1016/j.matdes.2017.03.024 doi: 10.1016/j.matdes.2017.03.024
spellingShingle QC Physics
QD Chemistry
TK Electrical engineering. Electronics Nuclear engineering
Harilal, Midhun
Syam, G. Krishnan
Lathakumary Vijayan, Binci
M., Venkatashamy Reddy
Adams, Stefan
Barron, Andrew R.
M. M., Yusoff
Rajan, Jose
Continuous Nanobelts of Nickel Oxide-Cobalt Oxide Hybrid With Improved Capacitive Charge Storage Properties
title Continuous Nanobelts of Nickel Oxide-Cobalt Oxide Hybrid With Improved Capacitive Charge Storage Properties
title_full Continuous Nanobelts of Nickel Oxide-Cobalt Oxide Hybrid With Improved Capacitive Charge Storage Properties
title_fullStr Continuous Nanobelts of Nickel Oxide-Cobalt Oxide Hybrid With Improved Capacitive Charge Storage Properties
title_full_unstemmed Continuous Nanobelts of Nickel Oxide-Cobalt Oxide Hybrid With Improved Capacitive Charge Storage Properties
title_short Continuous Nanobelts of Nickel Oxide-Cobalt Oxide Hybrid With Improved Capacitive Charge Storage Properties
title_sort continuous nanobelts of nickel oxide cobalt oxide hybrid with improved capacitive charge storage properties
topic QC Physics
QD Chemistry
TK Electrical engineering. Electronics Nuclear engineering
url http://umpir.ump.edu.my/id/eprint/17447/1/fit-2017-rajan-Continuous%20nanobelts%20of%20nickel1.pdf
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