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Effect of electrolytes on the electrochemical performance of nickel cobaltite–titania nanotubes composites as supercapacitive materials

The effects of electrolytes on the electrochemical performance of nickel cobaltite–titania nanotubes composites as electrochemical capacitors were evaluated. Four types of electrolytes were selected to assess their effects on the prepared composites, namely aqueous electrolytes of 1.0 M KCl, 1.0 M H...

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Main Authors: Chua, Chi Wing, Zainal, Zulkarnain, Lim, Hong Ngee, Chang, Sook Keng
Format: Article
Language:English
Published: Springer 2018
Online Access:http://psasir.upm.edu.my/id/eprint/72405/1/Effect%20of%20electrolytes%20on%20the%20electrochemical%20.pdf
http://psasir.upm.edu.my/id/eprint/72405/
https://link.springer.com/article/10.1007/s10854-018-9577-z
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spelling my.upm.eprints.724052020-06-03T00:11:54Z http://psasir.upm.edu.my/id/eprint/72405/ Effect of electrolytes on the electrochemical performance of nickel cobaltite–titania nanotubes composites as supercapacitive materials Chua, Chi Wing Zainal, Zulkarnain Lim, Hong Ngee Chang, Sook Keng The effects of electrolytes on the electrochemical performance of nickel cobaltite–titania nanotubes composites as electrochemical capacitors were evaluated. Four types of electrolytes were selected to assess their effects on the prepared composites, namely aqueous electrolytes of 1.0 M KCl, 1.0 M HCl, 1.0 M KOH; and an organic electrolyte, 0.27 M tetra-n-butylammonium tetrafluoroborate (TBATFB) ionic liquid salt in acetonitrile. The composites performed better in 1.0 M HCl and 1.0 M KOH, than in 1.0 M KCl and 0.27 M TBATFB, which suggested that aqueous electrolytes with non-neutral pH would improve the specific areal capacitance values of the composites. Results have shown optimal performance in 1.0 KOH, which endowed the composite with excellent rate capability up to 200 mV s−1. Cyclic voltammogram of the composite analysed in 1.0 M KOH produced a leaf-shaped like profile, with higher current densities towards more positive potentials. Charge–discharge analyses in 1.0 M KOH has shown that the composite possessed specific areal capacitance of up to 214.76 µF cm−2 when it was evaluated at the current density of 350 µA cm−2. The composite also retained up to 97.79% of its specific areal capacitance when current density was increased to 400 µA cm−2. This material has demonstrated potential application for electrochemical capacitors through its facile fabrication technique. Springer 2018 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/72405/1/Effect%20of%20electrolytes%20on%20the%20electrochemical%20.pdf Chua, Chi Wing and Zainal, Zulkarnain and Lim, Hong Ngee and Chang, Sook Keng (2018) Effect of electrolytes on the electrochemical performance of nickel cobaltite–titania nanotubes composites as supercapacitive materials. Journal of Materials Science: Materials in Electronics, 29 (17). 14445 - 14454. ISSN 0957-4522; ESSN: 1573-482X https://link.springer.com/article/10.1007/s10854-018-9577-z 10.1007/s10854-018-9577-z
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description The effects of electrolytes on the electrochemical performance of nickel cobaltite–titania nanotubes composites as electrochemical capacitors were evaluated. Four types of electrolytes were selected to assess their effects on the prepared composites, namely aqueous electrolytes of 1.0 M KCl, 1.0 M HCl, 1.0 M KOH; and an organic electrolyte, 0.27 M tetra-n-butylammonium tetrafluoroborate (TBATFB) ionic liquid salt in acetonitrile. The composites performed better in 1.0 M HCl and 1.0 M KOH, than in 1.0 M KCl and 0.27 M TBATFB, which suggested that aqueous electrolytes with non-neutral pH would improve the specific areal capacitance values of the composites. Results have shown optimal performance in 1.0 KOH, which endowed the composite with excellent rate capability up to 200 mV s−1. Cyclic voltammogram of the composite analysed in 1.0 M KOH produced a leaf-shaped like profile, with higher current densities towards more positive potentials. Charge–discharge analyses in 1.0 M KOH has shown that the composite possessed specific areal capacitance of up to 214.76 µF cm−2 when it was evaluated at the current density of 350 µA cm−2. The composite also retained up to 97.79% of its specific areal capacitance when current density was increased to 400 µA cm−2. This material has demonstrated potential application for electrochemical capacitors through its facile fabrication technique.
format Article
author Chua, Chi Wing
Zainal, Zulkarnain
Lim, Hong Ngee
Chang, Sook Keng
spellingShingle Chua, Chi Wing
Zainal, Zulkarnain
Lim, Hong Ngee
Chang, Sook Keng
Effect of electrolytes on the electrochemical performance of nickel cobaltite–titania nanotubes composites as supercapacitive materials
author_facet Chua, Chi Wing
Zainal, Zulkarnain
Lim, Hong Ngee
Chang, Sook Keng
author_sort Chua, Chi Wing
title Effect of electrolytes on the electrochemical performance of nickel cobaltite–titania nanotubes composites as supercapacitive materials
title_short Effect of electrolytes on the electrochemical performance of nickel cobaltite–titania nanotubes composites as supercapacitive materials
title_full Effect of electrolytes on the electrochemical performance of nickel cobaltite–titania nanotubes composites as supercapacitive materials
title_fullStr Effect of electrolytes on the electrochemical performance of nickel cobaltite–titania nanotubes composites as supercapacitive materials
title_full_unstemmed Effect of electrolytes on the electrochemical performance of nickel cobaltite–titania nanotubes composites as supercapacitive materials
title_sort effect of electrolytes on the electrochemical performance of nickel cobaltite–titania nanotubes composites as supercapacitive materials
publisher Springer
publishDate 2018
url http://psasir.upm.edu.my/id/eprint/72405/1/Effect%20of%20electrolytes%20on%20the%20electrochemical%20.pdf
http://psasir.upm.edu.my/id/eprint/72405/
https://link.springer.com/article/10.1007/s10854-018-9577-z
_version_ 1669008814426292224
score 13.211869

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