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Article: Self-standing electrodes with core-shell structures for high-performance supercapacitors

TitleSelf-standing electrodes with core-shell structures for high-performance supercapacitors
Authors
KeywordsTungsten nitride
Supercapacitor
Aerosol-assisted chemical vapour deposition
Density Functional Theory
In-situ transmission electron microscope
Issue Date2017
Citation
Energy Storage Materials, 2017, v. 9, p. 119-125 How to Cite?
AbstractFabrication of supercapacitor devices with the carbon cloth supported W2N@carbon ultrathin layer core-shell structures (W2N@C CS/carbon cloth) were realized by aerosol-assisted chemical vapour deposition (AACVD) followed by an ammonia annealing process. The representative electrodes delivered excellent areal specific capacitance of 693.0 mF cm-2 at 5 mV s-1 in a three electrode testing system, good rate capability of ~ 78% retention when the scan rate increased 10 times and superior cycling stability with ~ 91% capacitance retention after 20,000 cycles. The self-standing electrodes were manufactured for flexible asymmetric supercapacitors and assembled into coin cells with ionic electrolyte for high working voltage applications. The primary origins for the outperformance of W2N over WO3-x in acid aqueous electrolytes are uncovered by electrochemical analysis, simulation work and in-situ transmission electron microscope (TEM). This discovery paved the way of exploring and designing advanced metal nitride electrode materials for supercapacitors.
Persistent Identifierhttp://hdl.handle.net/10722/287421
ISSN
2019 Impact Factor: 16.28

 

DC FieldValueLanguage
dc.contributor.authorHe, G-
dc.contributor.authorLing, M-
dc.contributor.authorHan, X-
dc.contributor.authorAbou El Amaiem, DI-
dc.contributor.authorShao, Y-
dc.contributor.authorLi, Y-
dc.contributor.authorLi, W-
dc.contributor.authorJi, S-
dc.contributor.authorLi, B-
dc.contributor.authorLu, Y-
dc.contributor.authorZou, R-
dc.contributor.authorWang, FR-
dc.contributor.authorBrett, DJL-
dc.contributor.authorGuo, ZX-
dc.contributor.authorBlackman, C-
dc.contributor.authorParkin, IP-
dc.date.accessioned2020-09-22T08:30:10Z-
dc.date.available2020-09-22T08:30:10Z-
dc.date.issued2017-
dc.identifier.citationEnergy Storage Materials, 2017, v. 9, p. 119-125-
dc.identifier.issn2405-8297-
dc.identifier.urihttp://hdl.handle.net/10722/287421-
dc.description.abstractFabrication of supercapacitor devices with the carbon cloth supported W2N@carbon ultrathin layer core-shell structures (W2N@C CS/carbon cloth) were realized by aerosol-assisted chemical vapour deposition (AACVD) followed by an ammonia annealing process. The representative electrodes delivered excellent areal specific capacitance of 693.0 mF cm-2 at 5 mV s-1 in a three electrode testing system, good rate capability of ~ 78% retention when the scan rate increased 10 times and superior cycling stability with ~ 91% capacitance retention after 20,000 cycles. The self-standing electrodes were manufactured for flexible asymmetric supercapacitors and assembled into coin cells with ionic electrolyte for high working voltage applications. The primary origins for the outperformance of W2N over WO3-x in acid aqueous electrolytes are uncovered by electrochemical analysis, simulation work and in-situ transmission electron microscope (TEM). This discovery paved the way of exploring and designing advanced metal nitride electrode materials for supercapacitors.-
dc.languageeng-
dc.relation.ispartofEnergy Storage Materials-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.subjectTungsten nitride-
dc.subjectSupercapacitor-
dc.subjectAerosol-assisted chemical vapour deposition-
dc.subjectDensity Functional Theory-
dc.subjectIn-situ transmission electron microscope-
dc.titleSelf-standing electrodes with core-shell structures for high-performance supercapacitors-
dc.typeArticle-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1016/j.ensm.2017.07.005-
dc.identifier.scopuseid_2-s2.0-85024486370-
dc.identifier.volume9-
dc.identifier.spage119-
dc.identifier.epage125-

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