[1]王露,刘孝恒,汪信,等.MCM-41负载Co3O4复合超电容电极材料的电化学性能[J].南京理工大学学报(自然科学版),2012,36(02):353-358.
 WANG Lu,LIU Xiao-heng,WANG Xin.Electrochemical Properties of MCM-41 Supported Co3O4 Composites as Supercapacitor Electrode Materials[J].Journal of Nanjing University of Science and Technology,2012,36(02):353-358.
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MCM-41负载Co3O4复合超电容电极材料的电化学性能
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
36卷
期数:
2012年02期
页码:
353-358
栏目:
出版日期:
2012-04-30

文章信息/Info

Title:
Electrochemical Properties of MCM-41 Supported Co3O4 Composites as Supercapacitor Electrode Materials
作者:
王露; 刘孝恒; 汪信;
南京理工大学化工学院; 安徽师范大学化学与材料科学学院;
Author(s):
WANG Lu12LIU Xiao-heng1WANG Xin1
1.School of Chemical Engineering,NUST,Nanjing 210094,China; 2.College of Chemistry and Materials Science,Anhui Normal University,Wuhu 241000,China
关键词:
介孔材料 四氧化三钴 电极材料 超级电容器
Keywords:
mesoporous materials cobaltic-cobattous oxide electrode materials supercapacitors
分类号:
TM53
摘要:
采用灌注法将硝酸钴Co(NO3)2.6H2O负载到介孔氧化硅MCM-41孔道内,经煅烧得到Co3O4/MCM-41-x(x表示四氧化钴Co3O4与MCM-41的质量比)复合材料。利用X射线衍射、透射电子显微镜、N2吸附-脱附、循环伏安和交流阻抗技术研究了材料的化学组成、结构特征及电化学性能。结果表明,该材料的比表面积为280~440 m2/g,孔体积为0.22~0.34 cm3/g。Co3O4的负载量、扫描速率以及电解液浓度对材料的电化学性能均有显著影响。当x=1.6、扫描速率为3 mV/s、电解液为6 mol/L KOH溶液时,材料比电容高达308 F/g,500次循环测试后比电容保留率为91.3%。
Abstract:
By impregnating the cobalt nitrate Co(NO3)2·6H2O into the pore channels of mesoporous silica MCM-41 and then calcining the obtained precursors,the Co3O4/MCM-41-x(x is the mass ratio of cobaltic-cobattous oxide Co3O4 to MCM-41)series composites are made.The X-ray diffraction,the transmission electron microscopy,the N2 adsorption-desorption and the cyclic voltammetry and AC impedance spectroscopy are used to survey the chemical compositions,the structural characteristics and the electrochemical properties of titled materials.The results disclose that the specific surface areas and the pore volumes of materials are 280~440 m2/g and 0.22~0.34 cm3/g respectively.The loading of Co3O4,the sweep rate and the electrolyte concentration have significant influences on the electrochemical performances of the composites materials.When x is 1.6,the sweep rate is 3 mV/s,the specific capacitance of the material is 308 F/g and the electrode solution is 6 mol/L KOH,the retention rate of the specific capacitance is 91.3% after 500 continuous cycles.

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备注/Memo

备注/Memo:
国家自然科学基金(50772048)
更新日期/Last Update: 2012-10-12