Co3O4空心球的简易合成及其电化学性能.pdf

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1、第27卷第1期无机化学学报V0l_27No．12011年1月CHINESEJ0URNALOFIN0RGANICCHEMISTRY162．166Co304空心球的简易合成及其电化学性能易观贵肖勇贺文启赵率武拥建刘应亮袁定胜黄浪欢潭绍早(暨南大学化学系，纳米化学研究所，广州510632)摘要：通过简易的水热法“一锅”制备了Co，0空心球。借助X射线衍射仪(xRD)、扫描电子显微镜(SEM)、透射电子显微镜M)和傅里叶变换红外光谱法(F11R)等对Co，O的结构和形貌进行了表征。结果表明，产物由Co，O纳米粒子构成，

2、并形成明显的空心多孔结构。循环伏安法(CV)测试表明，所制得的CoO空心球呈现良好的电化学性能。本文同时对Co，0空心球结构的形成过程和可能的机理进行了分析和讨论。关键词：四氧化三钴(Co3o4)；空心球；水热法；电化学性能中图分类号：0614．8U2；0636．21文献标识码：A文章编号：1001．4861(2011)01—0162．05SimpleFabricationandElectrochemicalPropertiesofCmO4HollowSpheresYIGuan—GuiXIAOYongHEWen

3、-QiZHAOShuaiWUYong—JianLIUring—LiangYUANDing—ShengHUANGLang—HuanTANShao—Zao(DepartmentofChemistryandInstituteofNanoehemistry,，啪University,Guangzhou510632，China)Abstract：Co304hollowsphereswerehydrothennallypreparedat180℃bytheone—potmethod，followedbyheatingto5

4、50℃inair．ThecharacteristicsoftheseCo304sampleswereinvestigatedbyX-raydiffraction，scanningelectronmicroscopy，transmissionelectronmicroscopyandFouriertransforminfraredspectroscopy．Theresultsshowthattheas—synthesizedCo3O4hollowsphereshavetheporouswallwhichconsi

5、stsofnanosizedparticles．Thecyclicvoltammetry(CV)measurementshowsthatas—preparedCo304hollowsphereexhibitedagoodpseudo．capacitancebehavior．Moreover，thispaperalsoproposesthepossibleformationmechanismofCosO4hollowspheressynthesizedundertheone—potmethod．Keywords：

6、Co304；hollowsphere；hydrothermal；electrochemicalpropertiesInrecentyears，moreandmoreresearchershaveofthemostimportanttransitionmetaloxides，hasfocusedonhollowsphericalstructurematerialsfortheirattractedextraattentionduetotheirbroadrangeofpotentialapplicationsin

7、catalysis，controlleddelivery，applicationssuchaSmagneticmaterials，gassensors，artificialcells，lightfillers，lowdielectricconstantceramicpigments，catalystsandintercalationcompo—materials．acousticinsulation。andphotoniccrystals【．undsforenergystorage【．VariousCo304n

8、anostruct—Somereserchershavealsopresentedvarioussynthesisuresincludingnanorods[tr~，nanoplates旧，nanoflowers【ls】，routestoprepareinorganicmaterialswithhollownanocubest恻andSOforth，havebeensynthesize