High Performance MnO2 Nanoflower Supercapacitor Electrode by Electrochemical Recycling of Spent Batteries

MnO2 nanoflower is prepared by electrochemical conversion of Mn3O4 obtained by heat treatment of spent zinc‒carbon batteries cathode powder. The heat treated and converted powders were characterized by TGA, XRD, FTIR, FESEM and TEM techniques. XRD analyses show formation of Mn3O4 and MnO2 phases for...

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Main Authors:	Ali, Gomaa A. M., M. M., Yusoff, Shaaban, Essam R., Chong, Kwok Feng
Format:	Article
Language:	English
Published:	Elsevier 2017
Subjects:	QD Chemistry
Online Access:	http://umpir.ump.edu.my/id/eprint/17697/ http://umpir.ump.edu.my/id/eprint/17697/ http://umpir.ump.edu.my/id/eprint/17697/ http://umpir.ump.edu.my/id/eprint/17697/1/fist-2017-goma-High%20performance%20MnO21.pdf

id	ump-17697
recordtype	eprints
spelling	ump-176972018-10-17T03:18:19Z http://umpir.ump.edu.my/id/eprint/17697/ High Performance MnO2 Nanoflower Supercapacitor Electrode by Electrochemical Recycling of Spent Batteries Ali, Gomaa A. M. M. M., Yusoff Shaaban, Essam R. Chong, Kwok Feng QD Chemistry MnO2 nanoflower is prepared by electrochemical conversion of Mn3O4 obtained by heat treatment of spent zinc‒carbon batteries cathode powder. The heat treated and converted powders were characterized by TGA, XRD, FTIR, FESEM and TEM techniques. XRD analyses show formation of Mn3O4 and MnO2 phases for the heat treated and converted powders, respectively. FESEM images indicate the formation of porous nanoflower structure of MnO2, while, condensed aggregated particles are obtained for Mn3O4. The energy band gap of MnO2 is obtained from UV‒Vis spectra to be 2.4 eV. The electrochemical properties are investigated using cyclic voltammetry, galvanostatic charge‒discharge and electrochemical impedance techniques using three-electrode system. The specific capacitance of MnO2 nanoflower (309 F g−1 at 0.1 A g−1) is around six times higher than those obtained from the heat treated one (54 F g−1 at 0.1 A g−1). Moreover, it has high capacitance retention up to 93% over 1650 cycles. Impedance spectra of MnO2 nanoflower show very small resistances and high electrochemical active surface area (340 m2 g−1). The present work demonstrates a novel electrochemical approach to recycle spent zinc-carbon batteries into high value supercapacitor electrode Elsevier 2017 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/17697/1/fist-2017-goma-High%20performance%20MnO21.pdf Ali, Gomaa A. M. and M. M., Yusoff and Shaaban, Essam R. and Chong, Kwok Feng (2017) High Performance MnO2 Nanoflower Supercapacitor Electrode by Electrochemical Recycling of Spent Batteries. Ceramics International, 43 (11). pp. 8440-8448. ISSN 0272-8842 https://doi.org/10.1016/j.ceramint.2017.03.195 doi: 10.1016/j.ceramint.2017.03.195
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	QD Chemistry
spellingShingle	QD Chemistry Ali, Gomaa A. M. M. M., Yusoff Shaaban, Essam R. Chong, Kwok Feng High Performance MnO2 Nanoflower Supercapacitor Electrode by Electrochemical Recycling of Spent Batteries
description	MnO2 nanoflower is prepared by electrochemical conversion of Mn3O4 obtained by heat treatment of spent zinc‒carbon batteries cathode powder. The heat treated and converted powders were characterized by TGA, XRD, FTIR, FESEM and TEM techniques. XRD analyses show formation of Mn3O4 and MnO2 phases for the heat treated and converted powders, respectively. FESEM images indicate the formation of porous nanoflower structure of MnO2, while, condensed aggregated particles are obtained for Mn3O4. The energy band gap of MnO2 is obtained from UV‒Vis spectra to be 2.4 eV. The electrochemical properties are investigated using cyclic voltammetry, galvanostatic charge‒discharge and electrochemical impedance techniques using three-electrode system. The specific capacitance of MnO2 nanoflower (309 F g−1 at 0.1 A g−1) is around six times higher than those obtained from the heat treated one (54 F g−1 at 0.1 A g−1). Moreover, it has high capacitance retention up to 93% over 1650 cycles. Impedance spectra of MnO2 nanoflower show very small resistances and high electrochemical active surface area (340 m2 g−1). The present work demonstrates a novel electrochemical approach to recycle spent zinc-carbon batteries into high value supercapacitor electrode
format	Article
author	Ali, Gomaa A. M. M. M., Yusoff Shaaban, Essam R. Chong, Kwok Feng
author_facet	Ali, Gomaa A. M. M. M., Yusoff Shaaban, Essam R. Chong, Kwok Feng
author_sort	Ali, Gomaa A. M.
title	High Performance MnO2 Nanoflower Supercapacitor Electrode by Electrochemical Recycling of Spent Batteries
title_short	High Performance MnO2 Nanoflower Supercapacitor Electrode by Electrochemical Recycling of Spent Batteries
title_full	High Performance MnO2 Nanoflower Supercapacitor Electrode by Electrochemical Recycling of Spent Batteries
title_fullStr	High Performance MnO2 Nanoflower Supercapacitor Electrode by Electrochemical Recycling of Spent Batteries
title_full_unstemmed	High Performance MnO2 Nanoflower Supercapacitor Electrode by Electrochemical Recycling of Spent Batteries
title_sort	high performance mno2 nanoflower supercapacitor electrode by electrochemical recycling of spent batteries
publisher	Elsevier
publishDate	2017
url	http://umpir.ump.edu.my/id/eprint/17697/ http://umpir.ump.edu.my/id/eprint/17697/ http://umpir.ump.edu.my/id/eprint/17697/ http://umpir.ump.edu.my/id/eprint/17697/1/fist-2017-goma-High%20performance%20MnO21.pdf
first_indexed	2023-09-18T22:24:35Z
last_indexed	2023-09-18T22:24:35Z
_version_	1777415881250308096

High Performance MnO2 Nanoflower Supercapacitor Electrode by Electrochemical Recycling of Spent Batteries

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