|Table of Contents|

Electrochemical Properties of MCM-41 Supported Co3O4 Composites as Supercapacitor Electrode Materials


Research Field:
Publishing date:


Electrochemical Properties of MCM-41 Supported Co3O4 Composites as Supercapacitor Electrode Materials
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
mesoporous materials cobaltic-cobattous oxide electrode materials supercapacitors
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.


[1] Pandolfo A G,Hollenkamp A F. Carbon properties and their role in supercapacitors[J]. J Power Sources, 2006, 157: 11-27.
[2] Zheng J P,Cygan P J, Jow T R J. Hydrous ruthenium oxide as an electrode material for electrochemical capacitors [J]. Electrochem Soc, 1995, 142: 2699-2703.
[3] Hu C,Xing S T,Qu J H,et al. Catalytic ozonation of herbicide 2,4 -D over cobalt oxide supported on mesoporous zirconia[J]. J Phys Chem C,2008,112: 5978 -5983.
[4] Wei T Y,Chen C H,Chang K H,et al. Cobalt oxide aerogels of ideal supercapacitive properties prepared with an epoxide synthetic route [J]. Chem Mater, 2009, 21: 3228-3233.
[5] Srinivasan V,Weidner J W. Capacitance studies of cobalt oxide films formed via electrochemical precipitation [J]. J Power Sources, 2002, 108: 15-20.[6] Tao F F,Gao C L,Wen Z H, et al. Cobalt oxide hollow microspheres with micro- and nano-scale composite structure: fabrication and electrochemical performance [J]. J Solid State Chem, 2009, 182: 1055-1060.
[7] Zhao X S,Lu G Q,Millar G J. Advances in mesoporous molecular sieve MCM - 41[J]. Ind Eng Chem Res, 1996, 35: 2075-2090.
[8] Loebick C Z,Derrouiche S,Marinkovic N, et al. Effect of manganese addition to the Co-MCM-41 catalyst in the selective synthesis of single wall carbon nanotubes [J]. Phys Chem C, 2009, 113: 21611-21620.
[9] Long R Q,Yang R T. In situ FT-IR study of Rh-Al- MCM-41 catalyst for the selective catalytic reduction of nitric oxide with propylene in the presence of excess oxygen[J]. J Phys Chem B, 1999, 103: 2232-2238.
[10] Sakthivel A,Dapurkar S E,Selvam P. Mesoporous( Cr) MCM-41 and( Cr) MCM-48 molecular sieves: promising heterogeneous catalysts for liquid phase oxidation reactions [J]. Catal Lett, 2001, 77: 155-158.
[11] Jiang X Z,Su Y H,Chien S H. Novel synthesis of diethyl carbonate over palladium/MCM-41 catalysts [J]. Catal Lett, 2000, 69: 153-156.
[12] 周利鹏,杨晓梅,李晓强,等. 甲基修饰Au /MCM-41 催化环己烷选择氧化[J]. 郑州大学学报( 理学版) , 2008, 40( 3) : 113-116.
[13] 孔令斌,孙林林,罗永春,等. Ni( OH) 2 /SBA-15 分子筛复合电极材料的制备与超级电容性能[J]. 兰州理工大学学报, 2010, 36( 1) : 32-36.
[14] Grün M,Unger K K,Matsumoto A,et al. Novel pathways for the preparation of mesoporous MCM-41 materials: control of porosity and morphology[J]. Microporous Mesoporous Mater, 1999, 27: 207-216.
[15] Wang L,Liu X H,Wang X, et al. Preparation and electrochemical properties of mesoporous Co3O4 crater-like microspheres as supercapacitor electrode materials [J]. Current Applied Physics, 2010, 10: 422-1426.
[16] Deng J J,Deng J C,Liu Z L, et al. Influence of addition of cobalt oxide on microstructure and electrochemical capacitive performance of nickel oxide[J]. J Solid State Electrochem, 2009, 13: 1387-1394.
[17] Laouini E,Hamdani M,Pereira M I S,et al. Electrochemical impedance spectroscopy investigation of spinel type cobalt oxide thin film electrodes in alkaline medium[J]. J Appl Electrochem, 2008, 38: 1485-1494.
[18] Li K X,Luo Y H,Yu Z X, et al. Low temperature fabrication of efficient porous carbon counter electrode for dyesensitized solar cells[J]. Electrochem Commun, 2009, 11: 1346-11349.
[19] Yuan C Z,Zhang X G,Wu Q F,et al. Effect of temperature on the hybrid supercapacitor based on NiO and activated carbon with alkaline polymer gel electrolyte [J]. Solid State Ionics, 2006, 177: 1237-1242.


Last Update: 2012-10-12