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dc.contributor.authorGanganboina, Akhilesh Babuen_US
dc.contributor.authorChowdhury, Ankan Duttaen_US
dc.contributor.authorDoong, Ruey-anen_US
dc.date.accessioned2018-08-21T05:54:07Z-
dc.date.available2018-08-21T05:54:07Z-
dc.date.issued2017-06-01en_US
dc.identifier.issn2168-0485en_US
dc.identifier.urihttp://dx.doi.org/10.1021/acssuschemeng.7b00329en_US
dc.identifier.urihttp://hdl.handle.net/11536/145608-
dc.description.abstractGraphene quantum dots (GQDs) are a newly developed graphene family with good electrical conductivity and high theoretical capacitance, while halloysite nanotubes (HNTs) are naturally occurring layered mineral materials containing high active sites for energy storage support. The combination of HNTs and GQDs can offer a new strategy on the fabrication of eco-friendly electrode materials for high performance supercapacitor applications. Herein, an environmentally friendly GQD-HNT nanocomposite is fabricated in the presence of (3aminopropyl)-triethoxysilane to provide increased charge storage sites as well as to allow for the fast charge transport for supercapacitor application. Morphological and surface analytical results show that 5-10 nm GQDs are homogeneously distributed on the surface of APTES-coated HNTs via amide linkage. This new and novel layered nanocomposite can provide accessible electroactive sites and low resistance to accelerate the electrons and electrolyte ion transport, resulting in excellent specific capacitance and high energy density. The specific capacitances of 363-216 F/g at current densities of 0.5-20 A/g are obtained. In addition, the GQD-HNTs exhibit excellent energy density of 30-50 Wh/kg. Results obtained in this study clearly demonstrate the feasibility of using GQD-HNTs as alternative energy storage materials with increased charge storage sites and fast charge transport for high energy density supercapacitor applications.en_US
dc.language.isoen_USen_US
dc.subjectHalloysite nanotubes (HNTs)en_US
dc.subjectGraphene quantum dots (GQDs)en_US
dc.subjectCovalent attachmenten_US
dc.subjectSupercapacitoren_US
dc.subjectEnergy densityen_US
dc.titleNew Avenue for Appendage of Graphene Quantum Dots on Halloysite Nanotubes as Anode Materials for High Performance Supercapacitorsen_US
dc.typeArticleen_US
dc.identifier.doi10.1021/acssuschemeng.7b00329en_US
dc.identifier.journalACS SUSTAINABLE CHEMISTRY & ENGINEERINGen_US
dc.citation.volume5en_US
dc.citation.spage4930en_US
dc.citation.epage4940en_US
dc.contributor.department環境工程研究所zh_TW
dc.contributor.departmentInstitute of Environmental Engineeringen_US
dc.identifier.wosnumberWOS:000402950000051en_US
Appears in Collections:Articles