Conformal Coating of Cobalt-Nickel Layered Double Hydroxides Nanoflakes on Carbon Fibers for High-performance Electrochemical Energy Storage Supercapacitor Devices

Handle URI:
http://hdl.handle.net/10754/563013
Title:
Conformal Coating of Cobalt-Nickel Layered Double Hydroxides Nanoflakes on Carbon Fibers for High-performance Electrochemical Energy Storage Supercapacitor Devices
Authors:
Warsi, Muhammad Farooq; Shakir, Imran; Shahid, Muhammad; Sarfraz, Mansoor M.; Nadeem, Muhammad Tahir; Gilani, Zaheer Abbas
Abstract:
High specific capacitance coupled with the ease of large scale production is two desirable characteristics of a potential pseudo-supercapacitor material. In the current study, the uniform and conformal coating of nickel-cobalt layered double hydroxides (CoNi0.5LDH,) nanoflakes on fibrous carbon (FC) cloth has been achieved through cost-effective and scalable chemical precipitation method, followed by a simple heat treatment step. The conformally coated CoNi0.5LDH/FC electrode showed 1.5 times greater specific capacitance compared to the electrodes prepared by conventional non-conformal (drop casting) method of depositing CoNi0.5LDH powder on the carbon microfibers (1938 Fg-1 vs 1292 Fg-1). Further comparison of conformally and non-conformally coated CoNi0.5LDH electrodes showed the rate capability of 79%: 43% capacity retention at 50 Ag-1 and cycling stability 4.6%: 27.9% loss after 3000 cycles respectively. The superior performance of the conformally coated CoNi0.5LDH is mainly due to the reduced internal resistance and fast ionic mobility between electrodes as compared to non-conformally coated electrodes which is evidenced by EIS and CV studies. © 2014 Elsevier Ltd.
KAUST Department:
Materials Science and Engineering Program; Physical Sciences and Engineering (PSE) Division
Publisher:
Elsevier BV
Journal:
Electrochimica Acta
Issue Date:
Jul-2014
DOI:
10.1016/j.electacta.2014.05.020
Type:
Article
ISSN:
00134686
Sponsors:
The authors would like extend their sincere appreciation to the Deanship of Scientific Research at King Saudi University for its funding of this research through the Research Group Project no RGP-VPP-312.
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorWarsi, Muhammad Farooqen
dc.contributor.authorShakir, Imranen
dc.contributor.authorShahid, Muhammaden
dc.contributor.authorSarfraz, Mansoor M.en
dc.contributor.authorNadeem, Muhammad Tahiren
dc.contributor.authorGilani, Zaheer Abbasen
dc.date.accessioned2015-08-03T12:04:18Zen
dc.date.available2015-08-03T12:04:18Zen
dc.date.issued2014-07en
dc.identifier.issn00134686en
dc.identifier.doi10.1016/j.electacta.2014.05.020en
dc.identifier.urihttp://hdl.handle.net/10754/563013en
dc.description.abstractHigh specific capacitance coupled with the ease of large scale production is two desirable characteristics of a potential pseudo-supercapacitor material. In the current study, the uniform and conformal coating of nickel-cobalt layered double hydroxides (CoNi0.5LDH,) nanoflakes on fibrous carbon (FC) cloth has been achieved through cost-effective and scalable chemical precipitation method, followed by a simple heat treatment step. The conformally coated CoNi0.5LDH/FC electrode showed 1.5 times greater specific capacitance compared to the electrodes prepared by conventional non-conformal (drop casting) method of depositing CoNi0.5LDH powder on the carbon microfibers (1938 Fg-1 vs 1292 Fg-1). Further comparison of conformally and non-conformally coated CoNi0.5LDH electrodes showed the rate capability of 79%: 43% capacity retention at 50 Ag-1 and cycling stability 4.6%: 27.9% loss after 3000 cycles respectively. The superior performance of the conformally coated CoNi0.5LDH is mainly due to the reduced internal resistance and fast ionic mobility between electrodes as compared to non-conformally coated electrodes which is evidenced by EIS and CV studies. © 2014 Elsevier Ltd.en
dc.description.sponsorshipThe authors would like extend their sincere appreciation to the Deanship of Scientific Research at King Saudi University for its funding of this research through the Research Group Project no RGP-VPP-312.en
dc.publisherElsevier BVen
dc.subjectConformal Coatingen
dc.subjectNanoflakesen
dc.subjectNickel-cobalt layered double hydroxidesen
dc.subjectsupercapacitoren
dc.titleConformal Coating of Cobalt-Nickel Layered Double Hydroxides Nanoflakes on Carbon Fibers for High-performance Electrochemical Energy Storage Supercapacitor Devicesen
dc.typeArticleen
dc.contributor.departmentMaterials Science and Engineering Programen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalElectrochimica Actaen
dc.contributor.institutionDepartment of Chemistry, Islamia University of Bahawalpur, Bahawalpur-63100, Pakistanen
dc.contributor.institutionDeanship of Scientific Research, College of Engineering, King Saud University, PO-BOX 800, Riyadh, Saudi Arabiaen
dc.contributor.institutionProduction Chemistry Department, Petroleum A Development Oman (PDO) LLC, Muscat-100, Omanen
dc.contributor.institutionDepartment of Physics, Balochistan University of Information Technology, Engineering and Management Sciences, Quetta-87300, Pakistanen
kaust.authorShahid, Muhammaden
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