Electrochemical evaluation of fluorination treatment on MNO2 surfaces

Supercapacitors (SCs) also known as electrochemical capacitor functioning as alternative energy storage is required in most electronic devices, renewable energy system and also in hybrid vehicles that have high demand in these days. Excellent electrochemical performance, environment friendliness and...

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Main Author:	Siti Nur Najwa, Mohd Yusof
Format:	Undergraduates Project Papers
Language:	English English English English
Published:	2016
Subjects:	Q Science (General)
Online Access:	http://umpir.ump.edu.my/id/eprint/19494/ http://umpir.ump.edu.my/id/eprint/19494/ http://umpir.ump.edu.my/id/eprint/19494/1/Substrates%20effect%20on%20structural%20and%20optical%20properties%20of%20indium%20tin%20oxide%20%28ITO%29%20thin%20films%20by%20sol%20gel%20method-%20Table%20of%20contents.pdf http://umpir.ump.edu.my/id/eprint/19494/2/Substrates%20effect%20on%20structural%20and%20optical%20properties%20of%20indium%20tin%20oxide%20%28ITO%29%20thin%20films%20by%20sol%20gel%20method%20-Abstract.pdf http://umpir.ump.edu.my/id/eprint/19494/3/Substrates%20effect%20on%20structural%20and%20optical%20properties%20of%20indium%20tin%20oxide%20%28ITO%29%20thin%20films%20by%20sol%20gel%20method%20-Chapter%201.pdf http://umpir.ump.edu.my/id/eprint/19494/4/Substrates%20effect%20on%20structural%20and%20optical%20properties%20of%20indium%20tin%20oxide%20%28ITO%29%20thin%20films%20by%20sol%20gel%20method%20-References.pdf

id	ump-19494
recordtype	eprints
spelling	ump-194942017-12-19T03:34:50Z http://umpir.ump.edu.my/id/eprint/19494/ Electrochemical evaluation of fluorination treatment on MNO2 surfaces Siti Nur Najwa, Mohd Yusof Q Science (General) Supercapacitors (SCs) also known as electrochemical capacitor functioning as alternative energy storage is required in most electronic devices, renewable energy system and also in hybrid vehicles that have high demand in these days. Excellent electrochemical performance, environment friendliness and low cost material are needed to fulfil the energy demand by most developed country. In this study, fluorination treatment on manganese oxide (MnO2) is considered as an effective way to develop better energy storage due to its high electronegativity and reactivity when correlate with other element. Hydrothermal method is used to synthesis fluorinated MnO2 sample and the effect of variation of MnO2 type to precursor ratio is investigated on the charge storage ability. The crystallinity and functional groups of the samples was confirmed by the X-ray diffractometry and Fourier transforms infrared spectroscopy (FTIR). The cyclic voltammetry (CV) and galvanostatic charging–discharging (CDC) analysis in 0.5 M K2SO4 electrolyte shows that F-δ-MnO2 gives the highest Cs value of 183.012 F g-1 at scan rate of 5 mV s-1 and 65.04 F g-1 at current density of 0.3 A g-1. The electrochemical impedance spectroscopy shows that the F-δ-MnO2 has the lowest electrode resistances and charge transfer resistance which contributes to high Cs and the high conductivity of electrode. Hence, F-δ-MnO2 is better electrode material for supercapacitors compared to α-MnO2, δ-MnO2 and F-α-MnO2. 2016-12 Undergraduates Project Papers NonPeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/19494/1/Substrates%20effect%20on%20structural%20and%20optical%20properties%20of%20indium%20tin%20oxide%20%28ITO%29%20thin%20films%20by%20sol%20gel%20method-%20Table%20of%20contents.pdf application/pdf en http://umpir.ump.edu.my/id/eprint/19494/2/Substrates%20effect%20on%20structural%20and%20optical%20properties%20of%20indium%20tin%20oxide%20%28ITO%29%20thin%20films%20by%20sol%20gel%20method%20-Abstract.pdf application/pdf en http://umpir.ump.edu.my/id/eprint/19494/3/Substrates%20effect%20on%20structural%20and%20optical%20properties%20of%20indium%20tin%20oxide%20%28ITO%29%20thin%20films%20by%20sol%20gel%20method%20-Chapter%201.pdf application/pdf en http://umpir.ump.edu.my/id/eprint/19494/4/Substrates%20effect%20on%20structural%20and%20optical%20properties%20of%20indium%20tin%20oxide%20%28ITO%29%20thin%20films%20by%20sol%20gel%20method%20-References.pdf Siti Nur Najwa, Mohd Yusof (2016) Electrochemical evaluation of fluorination treatment on MNO2 surfaces. Faculty of Industrial Sciences and Technology, Universiti Malaysia Pahang. http://iportal.ump.edu.my/lib/item?id=chamo:102313&theme=UMP2
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English English English English
topic	Q Science (General)
spellingShingle	Q Science (General) Siti Nur Najwa, Mohd Yusof Electrochemical evaluation of fluorination treatment on MNO2 surfaces
description	Supercapacitors (SCs) also known as electrochemical capacitor functioning as alternative energy storage is required in most electronic devices, renewable energy system and also in hybrid vehicles that have high demand in these days. Excellent electrochemical performance, environment friendliness and low cost material are needed to fulfil the energy demand by most developed country. In this study, fluorination treatment on manganese oxide (MnO2) is considered as an effective way to develop better energy storage due to its high electronegativity and reactivity when correlate with other element. Hydrothermal method is used to synthesis fluorinated MnO2 sample and the effect of variation of MnO2 type to precursor ratio is investigated on the charge storage ability. The crystallinity and functional groups of the samples was confirmed by the X-ray diffractometry and Fourier transforms infrared spectroscopy (FTIR). The cyclic voltammetry (CV) and galvanostatic charging–discharging (CDC) analysis in 0.5 M K2SO4 electrolyte shows that F-δ-MnO2 gives the highest Cs value of 183.012 F g-1 at scan rate of 5 mV s-1 and 65.04 F g-1 at current density of 0.3 A g-1. The electrochemical impedance spectroscopy shows that the F-δ-MnO2 has the lowest electrode resistances and charge transfer resistance which contributes to high Cs and the high conductivity of electrode. Hence, F-δ-MnO2 is better electrode material for supercapacitors compared to α-MnO2, δ-MnO2 and F-α-MnO2.
format	Undergraduates Project Papers
author	Siti Nur Najwa, Mohd Yusof
author_facet	Siti Nur Najwa, Mohd Yusof
author_sort	Siti Nur Najwa, Mohd Yusof
title	Electrochemical evaluation of fluorination treatment on MNO2 surfaces
title_short	Electrochemical evaluation of fluorination treatment on MNO2 surfaces
title_full	Electrochemical evaluation of fluorination treatment on MNO2 surfaces
title_fullStr	Electrochemical evaluation of fluorination treatment on MNO2 surfaces
title_full_unstemmed	Electrochemical evaluation of fluorination treatment on MNO2 surfaces
title_sort	electrochemical evaluation of fluorination treatment on mno2 surfaces
publishDate	2016
url	http://umpir.ump.edu.my/id/eprint/19494/ http://umpir.ump.edu.my/id/eprint/19494/ http://umpir.ump.edu.my/id/eprint/19494/1/Substrates%20effect%20on%20structural%20and%20optical%20properties%20of%20indium%20tin%20oxide%20%28ITO%29%20thin%20films%20by%20sol%20gel%20method-%20Table%20of%20contents.pdf http://umpir.ump.edu.my/id/eprint/19494/2/Substrates%20effect%20on%20structural%20and%20optical%20properties%20of%20indium%20tin%20oxide%20%28ITO%29%20thin%20films%20by%20sol%20gel%20method%20-Abstract.pdf http://umpir.ump.edu.my/id/eprint/19494/3/Substrates%20effect%20on%20structural%20and%20optical%20properties%20of%20indium%20tin%20oxide%20%28ITO%29%20thin%20films%20by%20sol%20gel%20method%20-Chapter%201.pdf http://umpir.ump.edu.my/id/eprint/19494/4/Substrates%20effect%20on%20structural%20and%20optical%20properties%20of%20indium%20tin%20oxide%20%28ITO%29%20thin%20films%20by%20sol%20gel%20method%20-References.pdf
first_indexed	2023-09-18T22:27:50Z
last_indexed	2023-09-18T22:27:50Z
_version_	1777416085474115584

Electrochemical evaluation of fluorination treatment on MNO2 surfaces

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