Supersonically sprayed self-aligned rGO nanosheets and ZnO/ZnMn2O4 nanowires for high-energy and high-power-density supercapacitors
DC Field | Value | Language |
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dc.contributor.author | Park, Chanwoo | - |
dc.contributor.author | Samuel, Edmund | - |
dc.contributor.author | Kim, Byeong-Yeop | - |
dc.contributor.author | An, Seongpil | - |
dc.contributor.author | Lee, Hae-Seok | - |
dc.contributor.author | Yoon, Sam S. | - |
dc.date.accessioned | 2022-12-08T06:42:01Z | - |
dc.date.available | 2022-12-08T06:42:01Z | - |
dc.date.created | 2022-12-08 | - |
dc.date.issued | 2023-02-20 | - |
dc.identifier.issn | 1005-0302 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/146447 | - |
dc.description.abstract | Core-shell-type bimetallic oxide and carbon composites comprising zinc oxide (ZnO) nanospheres and zinc manganese oxide (ZnMn2O4) nanowires were produced by a hydrothermal method, and supersoni-cally sprayed together with reduced graphene oxide (rGO) nanosheets onto Ni foil to fabricate flexible su-percapacitors. The supersonic impact facilitated the exfoliation of the rGO nanosheets, thereby increasing the surface area and adhesion of the composite particles to the substrate. The rGO nanosheets were verti-cally aligned during the supersonic impact and formed localized zones, enabling optimal accommodation of the ZnO/ZnMn2O4 particles. This localization, with the addition of rGO, reduced the agglomeration of ZnO/ZnMn2O4 particles. The molar concentration of MnSO4 used in the synthesis of ZnO/ZnMn2O4 was varied from 0.05 to 0.15 mol/L to determine the optimal MnSO4 concentration that would result in the highest energy storage capacitance. The unique nanostructure of ZnO/ZnMn2O4 and the self-alignment of rGO sheets facilitated a favorable environment for high energy storage capability with a specific capaci-tance of 276.3 mF center dot cm -2 at a current density of 0.5 mA center dot cm-2 and an energy density of 98.2 mu Wh center dot cm-2 at a power density of 1600 mu W center dot cm -2. The width of the potential window was increased to 1.2 V, imply-ing a significant increase in the energy storage capability of the supercapacitor. Capacitance retention of 88% was achieved after 10,0 0 0 charge/discharge cycles for the supercapacitor fabricated using an optimal MnSO4 concentration (0.10 mol/L) during the composite synthesis.(c) 2022 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | JOURNAL MATER SCI TECHNOL | - |
dc.subject | HIGH-PERFORMANCE SUPERCAPACITOR | - |
dc.subject | PLANAR SUPERCAPACITOR | - |
dc.subject | MNO2 | - |
dc.subject | NANOCOMPOSITES | - |
dc.subject | NANOSTRUCTURE | - |
dc.subject | NANOPARTICLES | - |
dc.subject | NANOFLOWERS | - |
dc.subject | COMPOSITE | - |
dc.title | Supersonically sprayed self-aligned rGO nanosheets and ZnO/ZnMn2O4 nanowires for high-energy and high-power-density supercapacitors | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Yoon, Sam S. | - |
dc.identifier.doi | 10.1016/j.jmst.2022.08.007 | - |
dc.identifier.scopusid | 2-s2.0-85138776993 | - |
dc.identifier.wosid | 000876733000001 | - |
dc.identifier.bibliographicCitation | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY, v.137, pp.193 - 204 | - |
dc.relation.isPartOf | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | - |
dc.citation.title | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | - |
dc.citation.volume | 137 | - |
dc.citation.startPage | 193 | - |
dc.citation.endPage | 204 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Metallurgy & Metallurgical Engineering | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Metallurgy & Metallurgical Engineering | - |
dc.subject.keywordPlus | HIGH-PERFORMANCE SUPERCAPACITOR | - |
dc.subject.keywordPlus | PLANAR SUPERCAPACITOR | - |
dc.subject.keywordPlus | MNO2 | - |
dc.subject.keywordPlus | NANOCOMPOSITES | - |
dc.subject.keywordPlus | NANOSTRUCTURE | - |
dc.subject.keywordPlus | NANOPARTICLES | - |
dc.subject.keywordPlus | NANOFLOWERS | - |
dc.subject.keywordPlus | COMPOSITE | - |
dc.subject.keywordAuthor | ZnO | - |
dc.subject.keywordAuthor | ZnMn 2 O 4 nanowires | - |
dc.subject.keywordAuthor | rGO nanosheets | - |
dc.subject.keywordAuthor | Hydrothermal method | - |
dc.subject.keywordAuthor | Supersonic spraying | - |
dc.subject.keywordAuthor | Supercapacitor | - |
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