Ternary Ni–Cu–OH and Ni–Co–OH electrodes for electrochemical energy storage

Handle URI:
http://hdl.handle.net/10754/583305
Title:
Ternary Ni–Cu–OH and Ni–Co–OH electrodes for electrochemical energy storage
Authors:
Alhebshi, Nuha ( 0000-0002-2573-7979 ) ; Alshareef, Husam N. ( 0000-0001-5029-2142 )
Abstract:
In this project, Ni–Cu–OH and Ni–Co–OH ternary electrodes have been prepared. Different Ni:Cu and Ni:Co ratios were deposited by chemical bath deposition (CBD) at room temperature on carbon microfibers. Since Ni(OH)2 is notorious for poor cycling stability, the goal of the work was to determine if doping with Cu or Co could improve Ni(OH)2 cycling stability performance and conductivity against reaction with electrolyte. It is observed that the electrodes with Ni:Cu and Ni:Co composition ratio of 100:10 result in the optimum capacitance and cycling stability in both Ni–Cu–OH and Ni–Co–OH electrodes. This improvement in cycling stability can be attributed to the higher redox reversibility as indicated by the smaller CV redox peak separation. In addition, it is found that decreasing Cu and Co ratios, with fixed CBD time, enhances nanoflakes formation, and hence increases electrode capacitance. For the optimum composition (Ni:Co = 100:10), composites of the ternary electrodes with graphene and carbon nanofibers were also tested, with resultant improvement in potential window, equivalent series resistance, areal capacitance and cycling stability.
KAUST Department:
Materials Science and Engineering Program; Physical Sciences and Engineering (PSE) Division
Publisher:
Springer Science + Business Media
Journal:
Materials for Renewable and Sustainable Energy
Issue Date:
Oct-2015
DOI:
10.1007/s40243-015-0064-7
Type:
Article
ISSN:
2194-1459
EISSN:
2194-1467
Sponsors:
Research reported in this publication was supported by King Abdullah University of Science and Technology (KAUST)
Additional Links:
http://link.springer.com/article/10.1007/s40243-015-0064-7
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorAlhebshi, Nuhaen
dc.contributor.authorAlshareef, Husam N.en
dc.date.accessioned2015-12-07T13:25:52Zen
dc.date.available2015-12-07T13:25:52Zen
dc.date.issued2015-10en
dc.identifier.issn2194-1459en
dc.identifier.doi10.1007/s40243-015-0064-7en
dc.identifier.urihttp://hdl.handle.net/10754/583305en
dc.description.abstractIn this project, Ni–Cu–OH and Ni–Co–OH ternary electrodes have been prepared. Different Ni:Cu and Ni:Co ratios were deposited by chemical bath deposition (CBD) at room temperature on carbon microfibers. Since Ni(OH)2 is notorious for poor cycling stability, the goal of the work was to determine if doping with Cu or Co could improve Ni(OH)2 cycling stability performance and conductivity against reaction with electrolyte. It is observed that the electrodes with Ni:Cu and Ni:Co composition ratio of 100:10 result in the optimum capacitance and cycling stability in both Ni–Cu–OH and Ni–Co–OH electrodes. This improvement in cycling stability can be attributed to the higher redox reversibility as indicated by the smaller CV redox peak separation. In addition, it is found that decreasing Cu and Co ratios, with fixed CBD time, enhances nanoflakes formation, and hence increases electrode capacitance. For the optimum composition (Ni:Co = 100:10), composites of the ternary electrodes with graphene and carbon nanofibers were also tested, with resultant improvement in potential window, equivalent series resistance, areal capacitance and cycling stability.en
dc.description.sponsorshipResearch reported in this publication was supported by King Abdullah University of Science and Technology (KAUST)en
dc.language.isoenen
dc.publisherSpringer Science + Business Mediaen
dc.relation.urlhttp://link.springer.com/article/10.1007/s40243-015-0064-7en
dc.rightsAvailable under Open Access http://creativecommons.org/licenses/by/4.0/en
dc.subjectNickel hydroxideen
dc.subjectGrapheneen
dc.subjectElectrochemical supercapacitorsen
dc.titleTernary Ni–Cu–OH and Ni–Co–OH electrodes for electrochemical energy storageen
dc.typeArticleen
dc.identifier.eissn2194-1467en
dc.contributor.departmentMaterials Science and Engineering Programen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalMaterials for Renewable and Sustainable Energyen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorAlhebshi, Nuhaen
kaust.authorAlshareef, Husam N.en
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