Superior electrochemical performances of doubleshelled CuO yolk-shell powders formed from spherical copper nitrate-polyvinylpyrrolidone composite powders
DC Field | Value | Language |
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dc.contributor.author | Hong, Young Jun | - |
dc.contributor.author | Kang, Yun Chan | - |
dc.date.accessioned | 2021-09-05T17:14:28Z | - |
dc.date.available | 2021-09-05T17:14:28Z | - |
dc.date.created | 2021-06-15 | - |
dc.date.issued | 2014 | - |
dc.identifier.issn | 2046-2069 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/101140 | - |
dc.description.abstract | Spherical copper nitrate-polyvinylpyrrolidone (PVP) composite powders coated with a copper nitrate hydroxide [Cu-2(OH)(3)NO3]-carbon composite are prepared by a one-pot spray pyrolysis process. In this, Cu-2(OH)(3)NO3 and carbon are formed by dehydration of copper nitrate and carbonization of PVP, respectively. Thermal decomposition of the composite powders is then performed at 300 degrees C under an air atmosphere, producing the final yolk-shell-structured CuO powders. The electrochemical properties of these powders are then compared with those of commercial CuO nanopowders. The discharge capacities of the CuO yolk-shell powders and the commercial CuO nanopowders after 240 cycles at a current density of 500 mA g(-1) are 590 and 302 mA h g(-1), respectively. Furthermore, the discharge capacity of the CuO yolk-shell powders is as high as 615 mA h g(-1), even after 1000 cycles at a current density of 1000 mA g(-1). Electrochemical impedance spectroscopy reveals that the structural stability of the CuO yolk-shell powders during cycling lowers the charge transfer resistance, and thereby improves the lithium ion diffusion rate. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.subject | LI-ION BATTERIES | - |
dc.subject | LITHIUM-STORAGE PROPERTIES | - |
dc.subject | ANODE MATERIAL | - |
dc.subject | CATHODE MATERIALS | - |
dc.subject | FACILE SYNTHESIS | - |
dc.subject | SPRAY-PYROLYSIS | - |
dc.subject | CAPACITY | - |
dc.subject | NANOSTRUCTURES | - |
dc.subject | MICROSPHERES | - |
dc.subject | SYSTEMS | - |
dc.title | Superior electrochemical performances of doubleshelled CuO yolk-shell powders formed from spherical copper nitrate-polyvinylpyrrolidone composite powders | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kang, Yun Chan | - |
dc.identifier.doi | 10.1039/c4ra06054g | - |
dc.identifier.scopusid | 2-s2.0-84911896527 | - |
dc.identifier.wosid | 000345460800017 | - |
dc.identifier.bibliographicCitation | RSC ADVANCES, v.4, no.102, pp.58231 - 58237 | - |
dc.relation.isPartOf | RSC ADVANCES | - |
dc.citation.title | RSC ADVANCES | - |
dc.citation.volume | 4 | - |
dc.citation.number | 102 | - |
dc.citation.startPage | 58231 | - |
dc.citation.endPage | 58237 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary | - |
dc.subject.keywordPlus | LI-ION BATTERIES | - |
dc.subject.keywordPlus | LITHIUM-STORAGE PROPERTIES | - |
dc.subject.keywordPlus | ANODE MATERIAL | - |
dc.subject.keywordPlus | CATHODE MATERIALS | - |
dc.subject.keywordPlus | FACILE SYNTHESIS | - |
dc.subject.keywordPlus | SPRAY-PYROLYSIS | - |
dc.subject.keywordPlus | CAPACITY | - |
dc.subject.keywordPlus | NANOSTRUCTURES | - |
dc.subject.keywordPlus | MICROSPHERES | - |
dc.subject.keywordPlus | SYSTEMS | - |
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