All-solid-state supercapacitors on silicon using graphene from silicon carbide

Wang, Bei, Ahmed, Mohsin, Wood, Barry and Iacopi, Francesca (2016) All-solid-state supercapacitors on silicon using graphene from silicon carbide. Applied Physics Letters, 108 18: . doi:10.1063/1.4948768

Author Wang, Bei
Ahmed, Mohsin
Wood, Barry
Iacopi, Francesca
Title All-solid-state supercapacitors on silicon using graphene from silicon carbide
Journal name Applied Physics Letters   Check publisher's open access policy
ISSN 0003-6951
Publication date 2016-05-05
Year available 2016
Sub-type Article (original research)
DOI 10.1063/1.4948768
Open Access Status Not yet assessed
Volume 108
Issue 18
Total pages 5
Place of publication Melville, NY, United States
Publisher A I P Publishing LLC
Collection year 2017
Language eng
Formatted abstract
Carbon-based supercapacitors are lightweight devices with high energy storage performance, allowing for faster charge-discharge rates than batteries. Here, we present an example of all-solid-state supercapacitors on silicon for on-chip applications, paving the way towards energy supply systems embedded in miniaturized electronics with fast access and high safety of operation. We present a nickel-assisted graphitization method from epitaxial silicon carbide on a silicon substrate to demonstrate graphene as a binder-free electrode material for all-solid-state supercapacitors. We obtain graphene electrodes with a strongly enhanced surface area, assisted by the irregular intrusion of nickel into the carbide layer, delivering a typical double-layer capacitance behavior with a specific area capacitance of up to 174 μF cm-2 with about 88% capacitance retention over 10 000 cycles. The fabrication technique illustrated in this work provides a strategic approach to fabricate micro-scale energy storage devices compatible with silicon electronics and offering ultimate miniaturization capabilities.
Keyword Carbon-based supercapacitors
Micro-scale energy storage devices
Charge-discharge rates
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
Centre for Microscopy and Microanalysis Publications
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