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dc.contributor.authorChen, Wei
dc.contributor.authorBaby, Rakhi Raghavan
dc.contributor.authorAlshareef, Husam N.
dc.date.accessioned2015-08-03T09:35:59Z
dc.date.available2015-08-03T09:35:59Z
dc.date.issued2012
dc.identifier.issn09599428
dc.identifier.doi10.1039/c2jm32030d
dc.identifier.urihttp://hdl.handle.net/10754/562001
dc.description.abstractMacroporous, low-cost and recyclable kitchen sponges are explored as effective electrode platforms for supercapacitor devices. A simple and scalable process has been developed to fabricate MnO 2-carbon nanotube (CNT)-sponge supercapacitor electrodes using ordinary kitchen sponges. Two organic electrolytes (1 M of tetraethylammonium tetrafluoroborate (Et 4NBF 4) in propylene carbonate (PC), 1 M of LiClO 4 in PC) are utilized with the sponge-based electrodes to improve the energy density of the symmetrical supercapacitors. Compared to aqueous electrolyte (1 M of Na 2SO 4 in H 2O), the energy density of supercapacitors tripled in Et 4NBF 4 electrolyte, and further increased by six times in LiClO 4 electrolyte. The long-term cycling performance in different electrolytes was examined and the morphology changes of the electrode materials were also studied. The good electrochemical performance in both aqueous and organic electrolytes indicates that the MnO 2-CNT-sponge is a promising low-cost electrode for energy storage systems. © 2012 The Royal Society of Chemistry.
dc.description.sponsorshipThe authors wish to thank the Imaging and Characterization Core Facility and the Analytical Chemistry Core Laboratory for their support. W. C. acknowledges support from the KAUST Graduate Fellowship. H. A. acknowledges the support from KAUST baseline fund.
dc.publisherRoyal Society of Chemistry (RSC)
dc.titleHigh energy density supercapacitors using macroporous kitchen sponges
dc.typeArticle
dc.contributor.departmentMaterials Science and Engineering Program
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Division
dc.contributor.departmentAdvanced Membranes and Porous Materials Research Center
dc.contributor.departmentFunctional Nanomaterials and Devices Research Group
dc.identifier.journalJournal of Materials Chemistry
kaust.personBaby, Rakhi Raghavan
kaust.personAlshareef, Husam N.
kaust.personChen, Wei


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