Rapid in situ growth of β-Ni(OH)2 nanosheet arrays on nickel ...

Ni(OH)2 has been widely investigated as a prospective electrode material because of its high theoretical capacitance and relatively low cost. Jumptomaincontent Jumptositesearch Issue15,2020 PreviousArticle NextArticle Fromthejournal: DaltonTransactions Rapidinsitugrowthofβ-Ni(OH)2nanosheetarraysonnickelfoamasanintegratedelectrodeforsupercapacitorsexhibitinghighenergydensity† Jingbo Li, ‡a   Yu Liu, ‡ab   Wei Cao ‡a  and  Nan Chen*a   Authoraffiliations * Correspondingauthors a SchoolofMaterialsScienceandEngineering,NanchangUniversity,Nanchang330031,China E-mail: [email protected] b SchoolofScience,NanchangInstituteofTechnology,Nanchang330099,China Abstract Ni(OH)2hasbeenwidelyinvestigatedasaprospectiveelectrodematerialbecauseofitshightheoreticalcapacitanceandrelativelylowcost.Howeveritssynthesisusuallyneedsacomplexandlengthyprocess,andabinderisgenerallyusedforfabricatingNi(OH)2basedelectrodes.Inthiswork,aself-supportingbinder-freeβ-Ni(OH)2@nickelfoam(NF)integratedelectrodewaspreparedbytheinsitugrowthofβ-Ni(OH)2onNFusingarapidandfacileapproach.Thisapproachconsistsoftwoprocessingsteps:(1)thepre-treatmentofNFwithanacidand(2)thequickinsituelectrochemicalsynthesisofβ-Ni(OH)2ontheNFintheKOHelectrolytewithinhalfaminuteunderanappliedvoltage.Theβ-Ni(OH)2@NFintegratedelectrodepossessesathree-dimensionalnetworkstructureofnanosheetarraysandexhibitsexcellentelectrochemicalperformance.Itsarealcapacityis3.68mAhcm−2atacurrentdensityof2mAcm−2,andthecapacitycanretain115.8%ofitsinitialvalueevenafter2000cyclesatacurrentdensityof15mAcm−2.Moreover,theas-assembledβ-Ni(OH)2@NF//activatedcarbon(AC)asymmetricsupercapacitor(ASC)exhibitsahighenergydensityof74.2Whkg−1withapowerdensityof776.9Wkg−1andexcellentcyclingstability(89.9%retainedafter10 000cycles).Thisworkprovidesanefficient,facileandeconomicmethodforfabricatingNi(OH)2basedintegratedelectrodesforhigh-performancesupercapacitors. Youhaveaccesstothisarticle Pleasewaitwhileweloadyourcontent... Somethingwentwrong.Tryagain? About Citedby Related DownloadoptionsPleasewait... Supplementaryfiles Supplementaryinformation PDF(101K) Supplementaryinformation PDF(157K) Supplementaryinformation PDF(334K) Supplementaryinformation PDF(407K) Supplementaryinformation PDF(664K) Supplementarymovie MP4(2093K) Articleinformation DOI https://doi.org/10.1039/D0DT00687D Articletype Paper Submitted 24Feb2020 Accepted 25Mar2020 Firstpublished 25Mar2020 DownloadCitation DaltonTrans.,2020,49,4956-4966 BibTex EndNote MEDLINE ProCite ReferenceManager RefWorks RIS Permissions Requestpermissions Rapidinsitugrowthofβ-Ni(OH)2nanosheetarraysonnickelfoamasanintegratedelectrodeforsupercapacitorsexhibitinghighenergydensity J.Li,Y.Liu,W.CaoandN.Chen, DaltonTrans.,2020, 49,4956 DOI:10.1039/D0DT00687D Torequestpermissiontoreproducematerialfromthisarticle,pleasegotothe CopyrightClearanceCenterrequestpage. IfyouareanauthorcontributingtoanRSCpublication,youdonotneedtorequestpermission providedcorrectacknowledgementisgiven. Ifyouaretheauthorofthisarticle,youdonotneedtorequestpermissiontoreproducefigures anddiagramsprovidedcorrectacknowledgementisgiven.Ifyouwanttoreproducethewholearticle inathird-partypublication(excludingyourthesis/dissertationforwhichpermissionisnotrequired) pleasegototheCopyrightClearanceCenterrequestpage. ReadmoreabouthowtocorrectlyacknowledgeRSCcontent. Socialactivity Tweet Share Searcharticlesbyauthor JingboLi YuLiu WeiCao NanChen FetchingdatafromCrossRef. Thismaytakesometimetoload. Loadingrelatedcontent Spotlight Advertisements Publishing Journals CurrentJournals ArchiveJournals AllJournals Books NewTitles All Bookshop PickandChoose Databases LiteratureUpdates ChemSpider TheMerckIndex* MarinLit More ForMembers ForLibrarians Subscribe RSSFeeds Blogs ChemistryWorld EducationinChemistry OpenAccess HistoricalCollection