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DC Field | Value | Language |
---|---|---|
dc.citation.endPage | 11652 | - |
dc.citation.number | 20 | - |
dc.citation.startPage | 11646 | - |
dc.citation.title | NANOSCALE | - |
dc.citation.volume | 6 | - |
dc.contributor.author | Kim, Sun-I | - |
dc.contributor.author | Thiyagarajan, Pradheep | - |
dc.contributor.author | Jang, Ji-Hyun | - |
dc.date.accessioned | 2023-12-22T02:09:51Z | - |
dc.date.available | 2023-12-22T02:09:51Z | - |
dc.date.created | 2014-11-10 | - |
dc.date.issued | 2014-10 | - |
dc.description.abstract | In this letter, we report a facile approach to improve the capacitor properties of nickel hydroxide (Ni(OH)(2)) by simply coating gold nanoparticles (Au NPs) on the surface of Ni(OH)(2). Au NP-deposited Ni(OH)(2) (Au/Ni(OH)(2)) has been prepared by application of a conventional colloidal coating of Au NPs on the surface of 3D-Ni(OH)(2) synthesized via a hydrothermal method. Compared with pristine Ni(OH)(2), Au/Ni(OH)(2) shows a 41% enhanced capacitance value, excellent rate capacitance behavior at high current density conditions, and greatly improved cycling stability for supercapacitor applications. The specific capacitance of Au/Ni(OH)(2) reached 1927 F g(-1) at 1 A g(-1), which is close to the theoretical capacitance and retained 66% and 80% of the maximum value at a high current density of 20 A g(-1) and 5000 cycles while that of pristine Ni(OH)(2) was 1363 F g(-1) and significantly decreased to 48% and 30%, respectively, under the same conditions. The outstanding performance of Au/Ni(OH)(2) as a supercapacitor is attributed to the presence of metal Au NPs on the surface of semiconductor Ni(OH)(2); this permits the creation of virtual 3D conducting networks via metal/semiconductor contact, which induces fast electron and ion transport by acting as a bridge between Ni(OH)(2) nanostructures, thus eventually leading to significantly improved electrochemical capacitive behaviors, as confirmed by the EIS and I-V characteristic data. | - |
dc.identifier.bibliographicCitation | NANOSCALE, v.6, no.20, pp.11646 - 11652 | - |
dc.identifier.doi | 10.1039/c4nr02204a | - |
dc.identifier.issn | 2040-3364 | - |
dc.identifier.scopusid | 2-s2.0-84907546236 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/8483 | - |
dc.identifier.wosid | 000343000800007 | - |
dc.language | 영어 | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.title | Great improvement in pseudocapacitor properties of nickel hydroxide via simple gold deposition | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied | - |
dc.relation.journalResearchArea | Chemistry; Science & Technology - Other Topics; Materials Science; Physics | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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