Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
Ordered mesoporous carbon (OMC) materials have been successfully synthesized by selfassembly. The triblock copolymer F127, resorcinol and formaldehyde were employed as structuredirecting agents for selfassembly of the carbon precursors. XRD, TEM and nitrogen adsorption isotherms at low temperature (77K) were used to characterize the structure of the OMCs. The BET specific surface area and micropore volume of the material OMC-3 were 770m2/gand0.65cm3/g respectively. The OMC materials were used as electrodes to fabricate supercapacitors. The electrochemical doublelayer capacitance of the OMC electrodes was investigated using the constant current cycling (CCC) method. The electrochemical measurements showed that the OMC materials exhibit high efficiency and good electrochemical behavior as electrode materials. The specific capacitance of the supercapacitor with OMC-3 electrodes was 130F/g at a current load of 0.02A/g, and more than 99% of the electrical capacity was retained after 100 chargedischarge cycles.
ZHAO HaiJing;ZHAO DongLin;ZHANG TaiMing;GAO LongFei;LI Xiao;LI Feng.
Effects of the channel structure on the electrochemical performance of ordered mesoporous carbon materials[J]. Journal of Beijing University of Chemical Technology, 2013, 40(3): 61-68
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参考文献
[1]Liu N, Song H H, Chen X H. Morphology Control of Ordered Mesoporous Carbons by Changing HCl Concentration [J]. Journal of Materials Chemistry, 2011, 21: 5345-5351. [2]张阳, 李建玲, 韩桂梅, 等. 有序介孔碳的合成及电容性能研究[J]. 电子元件与材料, 2010, 29(3): 57-61. Zhang Y, Li J L, Han G M, et al. Synthesis and capacitance performance of ordered mesoporous carbon[J]. Electronic Components and Materials, 2010, 29(3): 57-61. (in Chinese) [3]Liang X, Wen Z Y, Liu Y, et al. Highly dispersed sulfur in ordered mesoporous carbon sphere as a composite cathode for rechargeable polymer Li/S battery[J]. Journal of Power Sources, 2011, 196: 3655-3658. [4]Li F H, Chi W D, Shen Z M, et al. Activation of mesocarbon microbeads with different textures and their application for supercapacitor[J]. Fuel Processing Technology, 2010, 91: 17-24. [5]Ktz R, Carlen M. Principles and applications of electrochemical capacitors[J]. Electrochim Acta, 2000, 45(15/16): 2483-2498. [6]Lu H L, Dai W J, Zheng M B, et al. Electrochemical capacitive behaviors of ordered mesoporous carbons with controllable pore sizes[J]. Journal of Power Sources, 2012, 209: 243-250. [7]Li L X, Song H H, Chen X H. Pore characteristics and electrochemical performance of ordered mesoporous carbons for electric doublelayer capacitors[J]. Electrochimica Acta, 2006, 51: 5715-5720. [8]Wu D C, Chen X, Lu S H, et al. Study on synergistic effect of ordered mesoporous carbon and carbon aerogel during electrochemical chargedischarge process[J]. Microporous and Mesoporous Materials, 2010, 131: 261-264. [9]Zhou J H, He J P, Zhang C X, et al. Mesoporous carbon spheres with uniformly penetrating channels and their use as a supercapacitor electrode material[J]. Materials Characterization, 2010, 61: 31-38. [10]Liu Z, Song Y, Yang Y, et al. Synthesis, characterization and magnetic performance of coincorporated ordered mesoporous carbons[J]. Materials Research Bulletin, 2012, 47: 274-278. [11]Wu H J, Wang L D, Wang Y M, et al. Enhanced microwave performance of highly ordered mesoporous carbon coated by Ni2O3nanoparticles[J]. Journal of Alloys and Compounds, 2012, 525: 82-86. [12]Huang C W, Hsu C H, Kuo P L, et al. Mesoporous carbon spheres grafted with carbon nanofibers for highrate electric double layer capacitors[J]. Carbon, 2011, 49: 895-903. [13]Ryoo R, Joo S H, Jun S. Synthesis of highly ordered carbon molecular sieves via templatemediated structural transformation[J]. The Journal of Physical Chemistry B, 1999, 103(37): 7743-7746. [14]Yoon S H, Lee J W, Hyeon T H, et al. Electric doublelayer capacitor performance of a new mesoporous carbon[J]. Journal of the Electrochemical Society, 2000, 147(7): 2507-2512. [15]Lee J W, Kim J Y, Lee Y J, et al. Simple synthesis of uniform mesoporous carbons with diverse structures from mesostructured polymer/silica nanocomposites[J]. Chemistry of Materials, 2004, 16: 3323-3330. [16]许恒生. 用交流阻抗频谱分析研究双电层电容器电解液[J]. 西安交通大学学报, 1995, 29(4): 13-19. Xu H S. Study on electrolytic solution for electric doublelayer capacitors by measurement of AC impedance frequency analysis[J]. Journal of Xi’an Jiao Tong University, 1995, 29(4): 13-19. (in Chinese) [17]Liang Y R, Wu D C, Fu R W. Preparation and electrochemical performance of novel ordered mesoporous carbon with an interconnected channel structure[J]. Langmuir, 2009, 25(14): 7783-7785.