Electrochemical energy storage on nanoporous copper sponge

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dc.contributor.authorMcPherson, DJen_AU
dc.contributor.authorDowd, Aen_AU
dc.contributor.authorArnold, MDen_AU
dc.contributor.authorGentle, Aen_AU
dc.contributor.authorCortie, MBen_AU
dc.date.accessioned2023-01-23T01:56:58Zen_AU
dc.date.available2023-01-23T01:56:58Zen_AU
dc.date.issued2022-03-24en_AU
dc.date.statistics2022-09-02en_AU
dc.description.abstractA 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. © The Authors - Open Access under a Creative Commons Attribution 4.0 International Licenseen_AU
dc.description.sponsorshipOpen Access funding enabled and organized by CAUL and its Member Institutions. The authors thank ANSTO for providing access to the Powder Diffraction beamline at the Australian Synchrotron. The technical assistance of Dr Justin Kimpton is acknowledged.en_AU
dc.identifier.citationMcPherson, D. J., Dowd, A., Arnold, M. D., Gentle, A., & Cortie, M. B. (2022). Electrochemical energy storage on nanoporous copper sponge. Journal of Materials Research, 37(13), 2195-2203. doi:10.1557/s43578-022-00535-zen_AU
dc.identifier.issn2044-5326en_AU
dc.identifier.issue13en_AU
dc.identifier.journaltitleJournal of Materials Researchen_AU
dc.identifier.pagination2195-2203en_AU
dc.identifier.urihttps://doi.org/10.1557/s43578-022-00535-zen_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/14472en_AU
dc.identifier.volume37en_AU
dc.language.isoenen_AU
dc.publisherSpringer Natureen_AU
dc.subjectCopperen_AU
dc.subjectCapactitive energy storage equipmenten_AU
dc.subjectCopper oxidesen_AU
dc.subjectElectrodesen_AU
dc.subjectDissolutionen_AU
dc.subjectElectrolytesen_AU
dc.subjectElectric dischargesen_AU
dc.subjectChargesen_AU
dc.titleElectrochemical energy storage on nanoporous copper spongeen_AU
dc.typeJournal Articleen_AU
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