Mn<inf>3</inf>O<inf>4</inf> nanoparticles embedded into graphene nanosheets: Preparation, characterization, and electrochemical properties for supercapacitors

Wang, B; Park, J; Wang, C; Ahn, H; Wang, G

Mn<inf>3</inf>O<inf>4</inf> nanoparticles embedded into graphene nanosheets: Preparation, characterization, and electrochemical properties for supercapacitors

Wang, B Park, J Wang, C Ahn, H Wang, G

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Publication Type:: Journal Article
Citation:: Electrochimica Acta, 2010, 55 (22), pp. 6812 - 6817
Issue Date:: 2010-09-01

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Field	Value	Language
dc.contributor.author	Wang, B	en_US
dc.contributor.author	Park, J	en_US
dc.contributor.author	Wang, C	en_US
dc.contributor.author	Ahn, H	en_US
dc.contributor.author	Wang, G https://orcid.org/0000-0003-4295-8578	en_US
dc.date.issued	2010-09-01	en_US
dc.identifier.citation	Electrochimica Acta, 2010, 55 (22), pp. 6812 - 6817	en_US
dc.identifier.issn	0013-4686	en_US
dc.identifier.uri	http://hdl.handle.net/10453/13081
dc.description.abstract	Mn3O4/graphene nanocomposites were synthesized by mixing graphene suspension in ethylene glycol with MnO2 organosol, followed by subsequent ultrasonication processing and heat treatment. The as-prepared product consists of nanosized Mn3O4 particles homogeneously distributed on graphene nanosheets, which has been confirmed by field emission scanning electron microscopy and transmission electron microscopy analysis. Atomic force microscope analysis further identified the distribution of dense Mn3O4 nanoparticles on graphene nanosheets. When used as electrode materials in supercapacitors, Mn3O 4/graphene nanocomposites exhibited a high specific capacitance of 175 F g-1 in 1 M Na2SO4 electrolyte and 256 F g-1 in 6 M KOH electrolyte, respectively. The enhanced supercapacitance of Mn3O4/graphene nanocomposites could be ascribed to both electrochemical contributions of Mn3O4 nanoparticles, functional groups attached to graphene nanosheets, and significantly increased specific surface area. © 2010 Elsevier Ltd. All rights reserved.	en_US
dc.relation.ispartof	Electrochimica Acta	en_US
dc.relation.isbasedon	10.1016/j.electacta.2010.05.086	en_US
dc.subject.classification	Energy	en_US
dc.title	Mn<inf>3</inf>O<inf>4</inf> nanoparticles embedded into graphene nanosheets: Preparation, characterization, and electrochemical properties for supercapacitors	en_US
dc.type	Journal Article
utslib.citation.volume	22	en_US
utslib.citation.volume	55	en_US
utslib.for	0904 Chemical Engineering	en_US
utslib.for	0306 Physical Chemistry (incl. Structural)	en_US
utslib.for	02 Physical Sciences	en_US
utslib.for	03 Chemical Sciences	en_US
utslib.for	09 Engineering	en_US
dc.location.activity	ISI:000281501100063	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Chemistry and Forensic Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
pubs.organisational-group	/University of Technology Sydney/Strength - CCET - Centre for Clean Energy Technology
utslib.copyright.status	closed_access
pubs.issue	22	en_US
pubs.publication-status	Published	en_US
pubs.volume	55	en_US

Abstract:

Mn3O4/graphene nanocomposites were synthesized by mixing graphene suspension in ethylene glycol with MnO2 organosol, followed by subsequent ultrasonication processing and heat treatment. The as-prepared product consists of nanosized Mn3O4 particles homogeneously distributed on graphene nanosheets, which has been confirmed by field emission scanning electron microscopy and transmission electron microscopy analysis. Atomic force microscope analysis further identified the distribution of dense Mn3O4 nanoparticles on graphene nanosheets. When used as electrode materials in supercapacitors, Mn3O 4/graphene nanocomposites exhibited a high specific capacitance of 175 F g-1 in 1 M Na2SO4 electrolyte and 256 F g-1 in 6 M KOH electrolyte, respectively. The enhanced supercapacitance of Mn3O4/graphene nanocomposites could be ascribed to both electrochemical contributions of Mn3O4 nanoparticles, functional groups attached to graphene nanosheets, and significantly increased specific surface area. © 2010 Elsevier Ltd. All rights reserved.

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http://hdl.handle.net/10453/13081