One-Step Electrodeposited Nickel Cobalt Sulfide Nanosheet Arrays for High-Performance Asymmetric Supercapacitors

Handle URI:
http://hdl.handle.net/10754/575614
Title:
One-Step Electrodeposited Nickel Cobalt Sulfide Nanosheet Arrays for High-Performance Asymmetric Supercapacitors
Authors:
Chen, Wei; Xia, Chuan ( 0000-0003-4526-159X ) ; Alshareef, Husam N. ( 0000-0001-5029-2142 )
Abstract:
A facile one-step electrodeposition method is developed to prepare ternary nickel cobalt sulfide interconnected nanosheet arrays on conductive carbon substrates as electrodes for supercapacitors, resulting in exceptional energy storage performance. Taking advantages of the highly conductive, mesoporous nature of the nanosheets and open framework of the three-dimensional nanoarchitectures, the ternary sulfide electrodes exhibit high specific capacitance (1418 F g(-1) at 5 A g(-1) and 1285 F g(-1) at 100 A g(-1)) with excellent rate capability. An asymmetric supercapacitor fabricated by the ternary sulfide nanosheet arrays as positive electrode and porous graphene film as negative electrode demonstrates outstanding electrochemical performance for practical energy storage applications. Our asymmetric supercapacitors show a high energy density of 60 Wh kg(-1) at a power density of 1.8 kW kg(-1). Even when charging the cell within 4.5 s, the energy density is still as high as 33 Wh kg(-1) at an outstanding power density of 28.8 kW kg(-1) with robust long-term cycling stability up to 50 000 cycles.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program; Materials Science and Engineering Program; Functional Nanomaterials and Devices Research Group
Publisher:
American Chemical Society (ACS)
Journal:
ACS Nano
Issue Date:
23-Sep-2014
DOI:
10.1021/nn503814y
Type:
Article
ISSN:
1936-0851; 1936-086X
Sponsors:
Research reported in this publication has been supported by King Abdullah University of Science and Technology (KAUST). The authors wish to thank the staff of the Imaging and Characterization Laboratory at KAUST, especially Dr. Qingxiao Wang for his help with the TEM analysis and Dr. Nejib Hedhili for his help with the XPS measurements. The authors also thank Dr. Rakhi RaghavanBaby from the Functional Nanomaterials and Devices Group at KAUST for several useful discussions.
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorChen, Weien
dc.contributor.authorXia, Chuanen
dc.contributor.authorAlshareef, Husam N.en
dc.date.accessioned2015-08-24T08:34:14Zen
dc.date.available2015-08-24T08:34:14Zen
dc.date.issued2014-09-23en
dc.identifier.issn1936-0851en
dc.identifier.issn1936-086Xen
dc.identifier.doi10.1021/nn503814yen
dc.identifier.urihttp://hdl.handle.net/10754/575614en
dc.description.abstractA facile one-step electrodeposition method is developed to prepare ternary nickel cobalt sulfide interconnected nanosheet arrays on conductive carbon substrates as electrodes for supercapacitors, resulting in exceptional energy storage performance. Taking advantages of the highly conductive, mesoporous nature of the nanosheets and open framework of the three-dimensional nanoarchitectures, the ternary sulfide electrodes exhibit high specific capacitance (1418 F g(-1) at 5 A g(-1) and 1285 F g(-1) at 100 A g(-1)) with excellent rate capability. An asymmetric supercapacitor fabricated by the ternary sulfide nanosheet arrays as positive electrode and porous graphene film as negative electrode demonstrates outstanding electrochemical performance for practical energy storage applications. Our asymmetric supercapacitors show a high energy density of 60 Wh kg(-1) at a power density of 1.8 kW kg(-1). Even when charging the cell within 4.5 s, the energy density is still as high as 33 Wh kg(-1) at an outstanding power density of 28.8 kW kg(-1) with robust long-term cycling stability up to 50 000 cycles.en
dc.description.sponsorshipResearch reported in this publication has been supported by King Abdullah University of Science and Technology (KAUST). The authors wish to thank the staff of the Imaging and Characterization Laboratory at KAUST, especially Dr. Qingxiao Wang for his help with the TEM analysis and Dr. Nejib Hedhili for his help with the XPS measurements. The authors also thank Dr. Rakhi RaghavanBaby from the Functional Nanomaterials and Devices Group at KAUST for several useful discussions.en
dc.publisherAmerican Chemical Society (ACS)en
dc.titleOne-Step Electrodeposited Nickel Cobalt Sulfide Nanosheet Arrays for High-Performance Asymmetric Supercapacitorsen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentMaterials Science and Engineering Programen
dc.contributor.departmentMaterials Science and Engineering Programen
dc.contributor.departmentFunctional Nanomaterials and Devices Research Groupen
dc.identifier.journalACS Nanoen
kaust.authorAlshareef, Husam N.en
kaust.authorChen, Weien
kaust.authorXia, Chuanen
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