Novel Au nanorod/Cu2O composite nanoparticles for a high-performance supercapacitor
DC Field | Value | Language |
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dc.contributor.author | Mahajan, Hansa | - |
dc.contributor.author | Cho, Seongjae | - |
dc.date.accessioned | 2022-04-01T02:40:09Z | - |
dc.date.available | 2022-04-01T02:40:09Z | - |
dc.date.created | 2022-04-01 | - |
dc.date.issued | 2022-03-21 | - |
dc.identifier.issn | 2046-2069 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/83865 | - |
dc.description.abstract | Metal-oxide nanomaterials have attracted great interest in recent years due to their novel characteristics such as surface effect and quantum confinement. A fascinating Au nanorod (NR)/cuprous oxide core-shell composite (AuNR/Cu2O) was directly synthesized using a moderate one-pot facile green redox method and further utilized for energy storage applications in a supercapacitor. The synthesis mechanism is based on the use of reducing agents to form the core shell. The resultant composite was deposited on the surface of nickel foam as a result of redox reactions between Au and Cu via a hydrothermal method. AuNR/Cu2O composite nanoparticles (NPs) were characterized using various spectroscopic and microscopic techniques, including UV-vis and X-ray photoelectron spectroscopies, Brunauer-Emmett-Teller surface area analysis, X-ray diffractometry, and transmission electron microscopy. The AuNR/Cu2O composite NPs grow via the depositing of a 20-50 nm Cu2O shell on an AuNR core with dimensions of 5-20 nm in width and 40-70 nm in length. The as-synthesized AuNR/Cu2O composite NPs were effectively used as electrode materials in a supercapacitor, and their electrochemical performance was determined by cyclic voltammetry, galvanostatic charge-discharge measurements, and electrochemical impedance spectroscopy in 2 M KOH aqueous solution as an electrolyte. The composite NPs showed excellent average specific capacitance of 235 F g(-1) at a current density of 2 A g(-1) and durable cycling stability (96% even after 10 000 cycles). The higher efficiency of the AuNR/Cu2O composite NPs can be attributed to the presence of AuNR in the core. The AuNR/Cu2O composite NPs exhibit a high surface area and high electrical conductivity, which consequently result in their excellent specific capacitance and outstanding rate as an all-solid-state supercapacitor electrode. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.relation.isPartOf | RSC ADVANCES | - |
dc.title | Novel Au nanorod/Cu2O composite nanoparticles for a high-performance supercapacitor | - |
dc.type | Article | - |
dc.type.rims | ART | - |
dc.description.journalClass | 1 | - |
dc.identifier.wosid | 000772133900001 | - |
dc.identifier.doi | 10.1039/d2ra00812b | - |
dc.identifier.bibliographicCitation | RSC ADVANCES, v.12, no.15, pp.9112 - 9120 | - |
dc.description.isOpenAccess | N | - |
dc.identifier.scopusid | 2-s2.0-85127883560 | - |
dc.citation.endPage | 9120 | - |
dc.citation.startPage | 9112 | - |
dc.citation.title | RSC ADVANCES | - |
dc.citation.volume | 12 | - |
dc.citation.number | 15 | - |
dc.contributor.affiliatedAuthor | Mahajan, Hansa | - |
dc.contributor.affiliatedAuthor | Cho, Seongjae | - |
dc.type.docType | Article | - |
dc.subject.keywordPlus | CYCLING STABILITY | - |
dc.subject.keywordPlus | GRAPHENE OXIDE | - |
dc.subject.keywordPlus | POLYPYRROLE | - |
dc.subject.keywordPlus | POLYANILINE | - |
dc.subject.keywordPlus | ELECTRODES | - |
dc.subject.keywordPlus | CATALYSTS | - |
dc.subject.keywordPlus | MANGANESE | - |
dc.subject.keywordPlus | ARRAYS | - |
dc.subject.keywordPlus | FILMS | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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