Influence of calcination temperature on the morphology and energy storage properties of cobalt oxide nanostructures directly grown over carbon cloth substrates

Handle URI:
http://hdl.handle.net/10754/550838
Title:
Influence of calcination temperature on the morphology and energy storage properties of cobalt oxide nanostructures directly grown over carbon cloth substrates
Authors:
Rakhi, R. B.; Chen, Wei; Cha, Dong Kyu; Alshareef, Husam N. ( 0000-0001-5029-2142 )
Abstract:
Nanostructured and mesoporous cobalt oxide (Co3O4) nanowire in flower-like arrangements have been directly grown over flexible carbon cloth collectors using solvothermal synthesis for supercapacitor applications. Changes in the morphology and porosity of the nanowire assemblies have been induced by manipulating the calcination temperature (200–300 °C) of the one-dimensional (1-D) structures, resulting in significant impact on their surface area and pseudocapacitive properties. As the calcination temperature increases from 200 to 250 °C, the flower morphology gradually modifies to the point where the electrolyte could access almost all the nanowires over the entire sample volume, resulting in an increase in specific capacitance from 334 to 605 Fg−1, depending on the nanowire electrode morphology. The 300 °C calcination results in the breakdown of the mesoporous morphology and decreases the efficiency of electrolyte diffusion, resulting in a drop in pseudocapacitance after 300 °C. A peak energy density of 44 Wh kg−1 has been obtained at a power density of 20 kW kg−1 for the 250 °C calcined sample.
KAUST Department:
Materials Science and Engineering Program
Citation:
Influence of calcination temperature on the morphology and energy storage properties of cobalt oxide nanostructures directly grown over carbon cloth substrates 2013, 2 (3-4) Materials for Renewable and Sustainable Energy
Publisher:
Springer
Journal:
Materials for Renewable and Sustainable Energy
Issue Date:
23-Sep-2013
DOI:
10.1007/s40243-013-0017-y
Type:
Article
ISSN:
2194-1459; 2194-1467
Additional Links:
http://link.springer.com/10.1007/s40243-013-0017-y
Appears in Collections:
Articles; Materials Science and Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorRakhi, R. B.en
dc.contributor.authorChen, Weien
dc.contributor.authorCha, Dong Kyuen
dc.contributor.authorAlshareef, Husam N.en
dc.date.accessioned2015-04-28T12:02:36Zen
dc.date.available2015-04-28T12:02:36Zen
dc.date.issued2013-09-23en
dc.identifier.citationInfluence of calcination temperature on the morphology and energy storage properties of cobalt oxide nanostructures directly grown over carbon cloth substrates 2013, 2 (3-4) Materials for Renewable and Sustainable Energyen
dc.identifier.issn2194-1459en
dc.identifier.issn2194-1467en
dc.identifier.doi10.1007/s40243-013-0017-yen
dc.identifier.urihttp://hdl.handle.net/10754/550838en
dc.description.abstractNanostructured and mesoporous cobalt oxide (Co3O4) nanowire in flower-like arrangements have been directly grown over flexible carbon cloth collectors using solvothermal synthesis for supercapacitor applications. Changes in the morphology and porosity of the nanowire assemblies have been induced by manipulating the calcination temperature (200–300 °C) of the one-dimensional (1-D) structures, resulting in significant impact on their surface area and pseudocapacitive properties. As the calcination temperature increases from 200 to 250 °C, the flower morphology gradually modifies to the point where the electrolyte could access almost all the nanowires over the entire sample volume, resulting in an increase in specific capacitance from 334 to 605 Fg−1, depending on the nanowire electrode morphology. The 300 °C calcination results in the breakdown of the mesoporous morphology and decreases the efficiency of electrolyte diffusion, resulting in a drop in pseudocapacitance after 300 °C. A peak energy density of 44 Wh kg−1 has been obtained at a power density of 20 kW kg−1 for the 250 °C calcined sample.en
dc.publisherSpringeren
dc.relation.urlhttp://link.springer.com/10.1007/s40243-013-0017-yen
dc.rightsThis article is distributed under the terms of the Creative Commons Attribution License which permits any use, dis- tribution, and reproduction in any medium, provided the original author(s) and the source are credited.en
dc.subjectSupercapacitoren
dc.subjectPseudocapacitanceen
dc.subjectCalcinationen
dc.subjectCobalt oxideen
dc.subjectMesoporousen
dc.subjectSpecific capacitanceen
dc.titleInfluence of calcination temperature on the morphology and energy storage properties of cobalt oxide nanostructures directly grown over carbon cloth substratesen
dc.typeArticleen
dc.contributor.departmentMaterials Science and Engineering Programen
dc.identifier.journalMaterials for Renewable and Sustainable Energyen
dc.eprint.versionPublisher's Version/PDFen
kaust.authorRakhi, R. B.en
kaust.authorChen, Weien
kaust.authorCha, Dong Kyuen
kaust.authorAlshareef, Husam N.en
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