Hierarchical Microspheres Based on alpha-Ni(OH)2 Nanosheets Intercalated with Different Anions: Synthesis, Anion Exchange, and Effect of Intercalated Anions on Electrochemical Capacitance

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dc.contributor.authorLee, Jeong-Wooko
dc.contributor.authorKo, Jang-Myounko
dc.contributor.authorKim, Jong-Dukko
dc.date.accessioned2013-03-11T11:03:18Z-
dc.date.available2013-03-11T11:03:18Z-
dc.date.created2012-02-06-
dc.date.created2012-02-06-
dc.date.issued2011-10-
dc.identifier.citationJOURNAL OF PHYSICAL CHEMISTRY C, v.115, no.39, pp.19445 - 19454-
dc.identifier.issn1932-7447-
dc.identifier.urihttp://hdl.handle.net/10203/99093-
dc.description.abstractHierarchical microspheres composed of wrinkled alpha-Ni(OH)(2) nanosheets were synthesized from an aqueous solution containing nickel salts, hexamethylenetetramine, 1-butanol, and dodecyl sulfate. The exchange of intercalated dodecyl sulfate anions within the microspheres by smaller anions (Cl-, NO3-, OAc-, and SO42-) resulted in retention of morphology. A possible growth mechanism is proposed based on the observation of the effects the parameter variation (different nickel and hydroxide sources, several alcohols, with and without dodecyl sulfate as well as 1-butanol) had on rnicrosphere formation. Electrochemical and capacitive properties of the anion-exchanged microspheres were studied by cyclic voltammetry and galvanostatic charging-discharging. Interestingly, the specific capacitance was determined by size of the intercalated anions and not by the basal spacing; for example, the largest anion, SO42-, gave the lowest specific capacitance, whereas the smallest anion, Cl-, gave the highest specific capacitance. Our data support the notion that larger anions impede the mobility of OH- ions toward the surface of Ni(OH)(2) sheets to a greater extent than smaller ions.-
dc.languageEnglish-
dc.publisherAMER CHEMICAL SOC-
dc.subjectLAYERED DOUBLE HYDROXIDES-
dc.subjectALPHA-NICKEL HYDROXIDE-
dc.subjectHYDROTHERMAL SYNTHESIS-
dc.subjectCOBALT HYDROXIDES-
dc.subjectZINC-
dc.subjectNANOSTRUCTURES-
dc.subjectSURFACTANT-
dc.subjectBEHAVIOR-
dc.subjectNANOCOMPOSITES-
dc.subjectDELAMINATION-
dc.titleHierarchical Microspheres Based on alpha-Ni(OH)2 Nanosheets Intercalated with Different Anions: Synthesis, Anion Exchange, and Effect of Intercalated Anions on Electrochemical Capacitance-
dc.typeArticle-
dc.identifier.wosid000295245500068-
dc.identifier.scopusid2-s2.0-80053492665-
dc.type.rimsART-
dc.citation.volume115-
dc.citation.issue39-
dc.citation.beginningpage19445-
dc.citation.endingpage19454-
dc.citation.publicationnameJOURNAL OF PHYSICAL CHEMISTRY C-
dc.contributor.localauthorKim, Jong-Duk-
dc.contributor.nonIdAuthorKo, Jang-Myoun-
dc.type.journalArticleArticle-
dc.subject.keywordPlusLAYERED DOUBLE HYDROXIDES-
dc.subject.keywordPlusALPHA-NICKEL HYDROXIDE-
dc.subject.keywordPlusHYDROTHERMAL SYNTHESIS-
dc.subject.keywordPlusCOBALT HYDROXIDES-
dc.subject.keywordPlusZINC-
dc.subject.keywordPlusNANOSTRUCTURES-
dc.subject.keywordPlusSURFACTANT-
dc.subject.keywordPlusBEHAVIOR-
dc.subject.keywordPlusNANOCOMPOSITES-
dc.subject.keywordPlusDELAMINATION-
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CBE-Journal Papers(저널논문)
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