Liquid-Crystal-Mediated 3D Macrostructured Composite of Co/Co<inf>3</inf>O<inf>4</inf> Embedded in Graphene: Free-Standing Electrode for Efficient Water Splitting

Islam, MM; Faisal, SN; Akhter, T; Roy, AK; Minett, AI; Konstantinov, K; Dou, SX

Liquid-Crystal-Mediated 3D Macrostructured Composite of Co/Co<inf>3</inf>O<inf>4</inf> Embedded in Graphene: Free-Standing Electrode for Efficient Water Splitting

Islam, MM Faisal, SN Akhter, T Roy, AK Minett, AI Konstantinov, K Dou, SX

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Publisher:: Wiley
Publication Type:: Journal Article
Citation:: Particle and Particle Systems Characterization, 2017, 34, (9), pp. 1-6
Issue Date:: 2017-09-01

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Field	Value	Language
dc.contributor.author	Islam, MM
dc.contributor.author	Faisal, SN
dc.contributor.author	Akhter, T
dc.contributor.author	Roy, AK
dc.contributor.author	Minett, AI
dc.contributor.author	Konstantinov, K
dc.contributor.author	Dou, SX
dc.date.accessioned	2022-09-02T02:56:37Z
dc.date.available	2022-09-02T02:56:37Z
dc.date.issued	2017-09-01
dc.identifier.citation	Particle and Particle Systems Characterization, 2017, 34, (9), pp. 1-6
dc.identifier.issn	1521-4117
dc.identifier.issn	1521-4117
dc.identifier.uri	http://hdl.handle.net/10453/161208
dc.description.abstract	A free-standing, 3D, macro/microstructured atomic-cobalt/cobalt-oxide–reduced-graphene-oxide (Co/Co3O4-Gr) composite has been developed for complete water splitting. The self-assembled porous morphology associated with the metal/metal oxide active sites makes the whole surface of the electrode conducive toward catalyzing hydrogen and oxygen evolution in alkaline media at a low onset potential. The liquid-crystal-mediated free-standing electrocatalyst shows oxygen evolution at the onset potential of 1.38 V and at the potential of 1.66 V for a current density of 10 mA cm−2. These potentials are comparable to the corresponding values for Ru/C (1.46 and 1.62 V, respectively). In addition, the promising hydrogen evolution performance of our composite compared to Pt/C in alkaline media makes it an efficient bifunctional electrocatalyst for comprehensive water splitting, as well as provides guidance for future electrochemical energy material technologies.
dc.language	English
dc.publisher	Wiley
dc.relation.ispartof	Particle and Particle Systems Characterization
dc.relation.isbasedon	10.1002/ppsc.201600386
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0299 Other Physical Sciences, 0904 Chemical Engineering, 0913 Mechanical Engineering
dc.subject.classification	Chemical Engineering
dc.title	Liquid-Crystal-Mediated 3D Macrostructured Composite of Co/Co<inf>3</inf>O<inf>4</inf> Embedded in Graphene: Free-Standing Electrode for Efficient Water Splitting
dc.type	Journal Article
utslib.citation.volume	34
utslib.for	0299 Other Physical Sciences
utslib.for	0904 Chemical Engineering
utslib.for	0913 Mechanical Engineering
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
utslib.copyright.status	closed_access	*
pubs.consider-herdc	false
dc.date.updated	2022-09-02T02:56:35Z
pubs.issue	9
pubs.publication-status	Published
pubs.volume	34
utslib.citation.issue	9

Abstract:

A free-standing, 3D, macro/microstructured atomic-cobalt/cobalt-oxide–reduced-graphene-oxide (Co/Co3O4-Gr) composite has been developed for complete water splitting. The self-assembled porous morphology associated with the metal/metal oxide active sites makes the whole surface of the electrode conducive toward catalyzing hydrogen and oxygen evolution in alkaline media at a low onset potential. The liquid-crystal-mediated free-standing electrocatalyst shows oxygen evolution at the onset potential of 1.38 V and at the potential of 1.66 V for a current density of 10 mA cm−2. These potentials are comparable to the corresponding values for Ru/C (1.46 and 1.62 V, respectively). In addition, the promising hydrogen evolution performance of our composite compared to Pt/C in alkaline media makes it an efficient bifunctional electrocatalyst for comprehensive water splitting, as well as provides guidance for future electrochemical energy material technologies.

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http://hdl.handle.net/10453/161208