Electrochemical energy storage on nanoporous copper sponge

McPherson, DJ; Dowd, A; Arnold, MD; Gentle, A; Cortie, MB

Electrochemical energy storage on nanoporous copper sponge

McPherson, DJ Dowd, A

Arnold, MD Gentle, A

Cortie, MB

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Publisher:: Springer
Publication Type:: Journal Article
Citation:: Journal of Materials Research, 2022, 37, (13), pp. 2195-2203
Issue Date:: 2022-07-14

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Field	Value	Language
dc.contributor.author	McPherson, DJ
dc.contributor.author	Dowd, A https://orcid.org/0000-0002-0500-3599
dc.contributor.author	Arnold, MD
dc.contributor.author	Gentle, A https://orcid.org/0000-0001-8964-0722
dc.contributor.author	Cortie, MB
dc.date.accessioned	2022-11-17T03:02:34Z
dc.date.available	2022-11-17T03:02:34Z
dc.date.issued	2022-07-14
dc.identifier.citation	Journal of Materials Research, 2022, 37, (13), pp. 2195-2203
dc.identifier.issn	0884-2914
dc.identifier.issn	2044-5326
dc.identifier.uri	http://hdl.handle.net/10453/163543
dc.description.abstract	A proof-of-principle double-layer symmetrical supercapacitor with nanoporous copper/copper oxide electrodes and an aqueous electrolyte is investigated. The electrodes are manufactured by selective dissolution of Al from a eutectic composition of Cu17.5Al82.5 using 5 M NaOH. The ostensible (i.e., net external) capacitance of a symmetrical two-electrode cell with 0.1 M KNO3 electrolyte is assessed over a series of charge/discharge cycles and is about 2 F per gram of Cu in this simple prototype. Capacitance varies during a discharge cycle due evidently to the deeply buried surfaces and pseudocapacitive reactions contributing charge toward the end of a discharge cycle. In principle such a device should have very low ohmic losses due to its highly conductive backbone and would be suitable for applications requiring maximum energy efficiency over repeated cycling. The aqueous electrolyte ensures fire safety but this comes at the cost of lower energy content. Graphical abstract: [Figure not available: see fulltext.]
dc.language	English
dc.publisher	Springer
dc.relation.ispartof	Journal of Materials Research
dc.relation.isbasedon	10.1557/s43578-022-00535-z
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	0204 Condensed Matter Physics, 0912 Materials Engineering, 0913 Mechanical Engineering
dc.subject.classification	Materials
dc.title	Electrochemical energy storage on nanoporous copper sponge
dc.type	Journal Article
utslib.citation.volume	37
utslib.for	0204 Condensed Matter Physics
utslib.for	0912 Materials Engineering
utslib.for	0913 Mechanical Engineering
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Students
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
utslib.copyright.status	open_access	*
pubs.consider-herdc	false
dc.date.updated	2022-11-17T03:02:32Z
pubs.issue	13
pubs.publication-status	Published
pubs.volume	37
utslib.citation.issue	13

Abstract:

A proof-of-principle double-layer symmetrical supercapacitor with nanoporous copper/copper oxide electrodes and an aqueous electrolyte is investigated. The electrodes are manufactured by selective dissolution of Al from a eutectic composition of Cu17.5Al82.5 using 5 M NaOH. The ostensible (i.e., net external) capacitance of a symmetrical two-electrode cell with 0.1 M KNO3 electrolyte is assessed over a series of charge/discharge cycles and is about 2 F per gram of Cu in this simple prototype. Capacitance varies during a discharge cycle due evidently to the deeply buried surfaces and pseudocapacitive reactions contributing charge toward the end of a discharge cycle. In principle such a device should have very low ohmic losses due to its highly conductive backbone and would be suitable for applications requiring maximum energy efficiency over repeated cycling. The aqueous electrolyte ensures fire safety but this comes at the cost of lower energy content. Graphical abstract: [Figure not available: see fulltext.]

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http://hdl.handle.net/10453/163543