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Low Cost, High Performance Supercapacitor Electrode Using Coconut Wastes: Eco-Friendly Approach

Low cost, high performance supercapacitor electrodes were fabricated using coconut waste as precursor. Simple one step pyrolysis is adopted to get the spherical shaped particle where lignocellulosic nature of carbon converts into porous carbon nanospheres. Three types of coconut wastes, namely, coco...

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Main Authors:	Divyashree, A., Shoriya Aruni, Abdul Manaf, Yallappa, S., Kathyayini, N., Hegde, Gurumurthy
Format:	Article
Language:	English
Published:	Elsevier 2016
Subjects:	Q Science (General)
Online Access:	http://umpir.ump.edu.my/id/eprint/14423/1/Low%20Cost%2C%20High%20Performance%20Supercapacitor%20Electrode%20Using%20Coconut%20Wastes-%20Eco-Friendly%20Approach.pdf http://umpir.ump.edu.my/id/eprint/14423/ http://dx.doi.org/10.1016/j.jechem.2016.08.002
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id	my.ump.umpir.14423
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spelling	my.ump.umpir.144232018-05-17T05:20:57Z http://umpir.ump.edu.my/id/eprint/14423/ Low Cost, High Performance Supercapacitor Electrode Using Coconut Wastes: Eco-Friendly Approach Divyashree, A. Shoriya Aruni, Abdul Manaf Yallappa, S. Kathyayini, N. Hegde, Gurumurthy Q Science (General) Low cost, high performance supercapacitor electrodes were fabricated using coconut waste as precursor. Simple one step pyrolysis is adopted to get the spherical shaped particle where lignocellulosic nature of carbon converts into porous carbon nanospheres. Three types of coconut wastes, namely, coconut fiber (CF), coconut leaves (CL) and coconut stick (CS) have been studied and compared for their application in supercapacitors. Uniform spherical shape with particle size ranging from 30 to 60 nm for leaves and sticks and ∼20 nm for fibers was obtained. The electrochemical properties of the porous carbon nanospheres were studied using cyclic voltammetry (CV), chronopotentiometry (CP) and electrochemical impedance spectroscopy (EIS). The porous carbon nanospheres derived from all the three biowaste samples show good electrochemical performance for supercapacitor application. Porous carbon nanospheres derived from coconut fiber exhibited maximum specific capacitance of 236 F/g followed by coconut stick and coconut leaves with 208 and 116 F/g respectively at a scan rate of 2 mV/s. Further impedance studies showed a charge transfer resistance of 4.9 Ω for the porous carbon nanospheres derived from coconut fiber, while those from coconut leaves and coconut stick exhibited a slightly higher resistance of 6 and 14.2 Ω, respectively. The simple eco-friendly approach we have demonstrated for synthesizing coconut waste based carbon nanospheres makes them excellent candidates for future, low-cost, energy storage devices. Elsevier 2016-09 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/14423/1/Low%20Cost%2C%20High%20Performance%20Supercapacitor%20Electrode%20Using%20Coconut%20Wastes-%20Eco-Friendly%20Approach.pdf Divyashree, A. and Shoriya Aruni, Abdul Manaf and Yallappa, S. and Kathyayini, N. and Hegde, Gurumurthy (2016) Low Cost, High Performance Supercapacitor Electrode Using Coconut Wastes: Eco-Friendly Approach. Journal of Energy Chemistry, 25 (5). pp. 880-887. ISSN 2095-4956 http://dx.doi.org/10.1016/j.jechem.2016.08.002 DOI: 10.1016/j.jechem.2016.08.002
institution	Universiti Malaysia Pahang
building	UMP Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaysia Pahang
content_source	UMP Institutional Repository
url_provider	http://umpir.ump.edu.my/
language	English
topic	Q Science (General)
spellingShingle	Q Science (General) Divyashree, A. Shoriya Aruni, Abdul Manaf Yallappa, S. Kathyayini, N. Hegde, Gurumurthy Low Cost, High Performance Supercapacitor Electrode Using Coconut Wastes: Eco-Friendly Approach
description	Low cost, high performance supercapacitor electrodes were fabricated using coconut waste as precursor. Simple one step pyrolysis is adopted to get the spherical shaped particle where lignocellulosic nature of carbon converts into porous carbon nanospheres. Three types of coconut wastes, namely, coconut fiber (CF), coconut leaves (CL) and coconut stick (CS) have been studied and compared for their application in supercapacitors. Uniform spherical shape with particle size ranging from 30 to 60 nm for leaves and sticks and ∼20 nm for fibers was obtained. The electrochemical properties of the porous carbon nanospheres were studied using cyclic voltammetry (CV), chronopotentiometry (CP) and electrochemical impedance spectroscopy (EIS). The porous carbon nanospheres derived from all the three biowaste samples show good electrochemical performance for supercapacitor application. Porous carbon nanospheres derived from coconut fiber exhibited maximum specific capacitance of 236 F/g followed by coconut stick and coconut leaves with 208 and 116 F/g respectively at a scan rate of 2 mV/s. Further impedance studies showed a charge transfer resistance of 4.9 Ω for the porous carbon nanospheres derived from coconut fiber, while those from coconut leaves and coconut stick exhibited a slightly higher resistance of 6 and 14.2 Ω, respectively. The simple eco-friendly approach we have demonstrated for synthesizing coconut waste based carbon nanospheres makes them excellent candidates for future, low-cost, energy storage devices.
format	Article
author	Divyashree, A. Shoriya Aruni, Abdul Manaf Yallappa, S. Kathyayini, N. Hegde, Gurumurthy
author_facet	Divyashree, A. Shoriya Aruni, Abdul Manaf Yallappa, S. Kathyayini, N. Hegde, Gurumurthy
author_sort	Divyashree, A.
title	Low Cost, High Performance Supercapacitor Electrode Using Coconut Wastes: Eco-Friendly Approach
title_short	Low Cost, High Performance Supercapacitor Electrode Using Coconut Wastes: Eco-Friendly Approach
title_full	Low Cost, High Performance Supercapacitor Electrode Using Coconut Wastes: Eco-Friendly Approach
title_fullStr	Low Cost, High Performance Supercapacitor Electrode Using Coconut Wastes: Eco-Friendly Approach
title_full_unstemmed	Low Cost, High Performance Supercapacitor Electrode Using Coconut Wastes: Eco-Friendly Approach
title_sort	low cost, high performance supercapacitor electrode using coconut wastes: eco-friendly approach
publisher	Elsevier
publishDate	2016
url	http://umpir.ump.edu.my/id/eprint/14423/1/Low%20Cost%2C%20High%20Performance%20Supercapacitor%20Electrode%20Using%20Coconut%20Wastes-%20Eco-Friendly%20Approach.pdf http://umpir.ump.edu.my/id/eprint/14423/ http://dx.doi.org/10.1016/j.jechem.2016.08.002
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score	13.211869

Low Cost, High Performance Supercapacitor Electrode Using Coconut Wastes: Eco-Friendly Approach

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