Capacitive properties of reduced graphene oxide microspheres with uniformly dispersed nickel sulfide nanocrystals prepared by spray pyrolysis
DC Field | Value | Language |
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dc.contributor.author | Lee, Su Min | - |
dc.contributor.author | Ko, You Na | - |
dc.contributor.author | Choi, Seung Ho | - |
dc.contributor.author | Kim, Jong Hwa | - |
dc.contributor.author | Kang, Yun Chan | - |
dc.date.accessioned | 2021-09-04T15:07:51Z | - |
dc.date.available | 2021-09-04T15:07:51Z | - |
dc.date.created | 2021-06-16 | - |
dc.date.issued | 2015-06-10 | - |
dc.identifier.issn | 0013-4686 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/93272 | - |
dc.description.abstract | Nickel sulfide-reduced graphene oxide (RGO) composite powders with spherical shapes are prepared by a one-pot spray pyrolysis process. The optimum mole ratio of nickel nitrate and thiourea to obtain nickel sulfide-RGO composite powders with high initial capacities and good cycling performance is 1:8. The bare nickel sulfide and nickel sulfide-RGO composite powders prepared directly by spray pyrolysis have mixed crystal structures of hexagonal alpha-NiS and cubic Ni3S4 phases. The bare nickel sulfide powders are prepared from the spray solution without graphene oxide sheets. The nickel sulfide-RGO composite powders have sharp mesopores approximately 3.5 nm in size. The discharge capacities of the nickel sulfide-RGO composite powders for the 1st and 200th cycles at a current density of 1000 mA g (1) are 1046 and 614 mA h g (1), respectively, and the corresponding capacity retention measured from the second cycle is 89%. However, the discharge capacities of the bare nickel sulfide powders for the 1st and 200th cycles at a current density of 1000 mA g (1) are 832 and 16 mA h g (1), respectively. The electrochemical impedance spectroscopy (EIS) measurements reveal the high structural stability of the nickel sulfide-RGO composite powders during cycling. (C) 2015 Elsevier Ltd. All rights reserved. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | PERGAMON-ELSEVIER SCIENCE LTD | - |
dc.subject | ANODE MATERIALS | - |
dc.subject | ELECTROCHEMICAL PROPERTIES | - |
dc.subject | COMPOSITE POWDERS | - |
dc.subject | LITHIUM | - |
dc.subject | CATHODE | - |
dc.subject | NANOCOMPOSITE | - |
dc.subject | FABRICATION | - |
dc.subject | MECHANISM | - |
dc.subject | SHEETS | - |
dc.subject | ROUTE | - |
dc.title | Capacitive properties of reduced graphene oxide microspheres with uniformly dispersed nickel sulfide nanocrystals prepared by spray pyrolysis | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kang, Yun Chan | - |
dc.identifier.doi | 10.1016/j.electacta.2015.03.196 | - |
dc.identifier.scopusid | 2-s2.0-84961292139 | - |
dc.identifier.wosid | 000354053400038 | - |
dc.identifier.bibliographicCitation | ELECTROCHIMICA ACTA, v.167, pp.287 - 293 | - |
dc.relation.isPartOf | ELECTROCHIMICA ACTA | - |
dc.citation.title | ELECTROCHIMICA ACTA | - |
dc.citation.volume | 167 | - |
dc.citation.startPage | 287 | - |
dc.citation.endPage | 293 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Electrochemistry | - |
dc.relation.journalWebOfScienceCategory | Electrochemistry | - |
dc.subject.keywordPlus | ANODE MATERIALS | - |
dc.subject.keywordPlus | ELECTROCHEMICAL PROPERTIES | - |
dc.subject.keywordPlus | COMPOSITE POWDERS | - |
dc.subject.keywordPlus | LITHIUM | - |
dc.subject.keywordPlus | CATHODE | - |
dc.subject.keywordPlus | NANOCOMPOSITE | - |
dc.subject.keywordPlus | FABRICATION | - |
dc.subject.keywordPlus | MECHANISM | - |
dc.subject.keywordPlus | SHEETS | - |
dc.subject.keywordPlus | ROUTE | - |
dc.subject.keywordAuthor | graphene composite | - |
dc.subject.keywordAuthor | nickel sulfide | - |
dc.subject.keywordAuthor | lithium ion battery | - |
dc.subject.keywordAuthor | anode material | - |
dc.subject.keywordAuthor | spray pyrolysis | - |
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