采用微湿含浸法制备了一系列具有不同比表面积和孔径分布的超级电容器有序中孔炭材料.采用液氮吸附脱附等温线、小角XRD以及TEM表征了有序中孔炭的孔结构,在1 M Et_4NBF_4 IPC电解液中测试了其电化学性能.结果表明,所制得的有序中孔炭的BET比表面积随糠醇加入量的增加先增加后减小,糠醇加入量少制得具有CMK-5结构的有序中孔炭,加入量多制得的CMK-3结构.电化学性能测试结果表明,在1mA·cm~(-2)的充放电电流密度下各有序中孔炭材料比电容的大小顺序与其BET比表面积的大小顺序基本一致,具有CMK-3结构的有序中孔炭的倍率性能最好,并且也好于无序中孔炭的.
A series of ordered mesoporous carbons used as electrode material for supercapacitor with dif-ferent surface area and pore size distribution were prepared by incipient wetness impregnation method. N_2 adsorption and desorption isotherms, small angel XRD and TEM were used to characterize the pore struc-ture of the ordered mesoporous carbons, and the electrochemical performances of the ordered mesoporous carbon materials were tested in 1 M Et_4NBF_4IPC electrolyte. The results show that the BET surface area of the ordered mesoporous carbons increase at first and decrease afterwards with the increase of the a-mount of the furfuryl alcohol added, and ordered mesoporous carbon with CMK -5 structure was prepared with less amount of the furfuryl alcohol added, whereas that with CMK - 3 structure was synthesized with more amount of the furfuryl alcohol added. The results of electrochemical characterization show that the magnitude order of the specific capacitance of the ordered mesoporous carbons is almost in good agree-ment with that of the BET surface area at the charge - discharge current density of 1 mA · cm~(-2) . The rate capability of the ordered mesoporous carbon with CMK - 3 structure is found to be the best, and it is also better than that of disordered mesoporous carbon.
参考文献
| [1] | Elzbieta Frackowiak;Francois Beguin .Carbon materials for the electrochemical storage of energy in capacitors[J].Carbon: An International Journal Sponsored by the American Carbon Society,2001(6):937-950. |
| [2] | 张栓勤;王珏;朱基千 等.用碳气凝胶作电极材料制作双电层电容器[J].功能材料与器件学报,1998,4(04):263-267. |
| [3] | Hisashi Tamai;Masayuki Kouzu;Masayuki Morita .Highly Mesoporous Carbon Electrodes for Electric Double-Layer Capacitors[J].Electrochemical and solid-state letters,2003(10):A214-A217. |
| [4] | W. Xing;S.Z. Qiao;R.G. Ding .Superior electric double layer capacitors using ordered mesoporous carbons[J].Carbon: An International Journal Sponsored by the American Carbon Society,2006(2):216-224. |
| [5] | C. Vix-Guterl;S. Saadallah;K. Jurewicz .Supercapacitor electrodes from new ordered porous carbon materials obtained by a templating procedure[J].Materials Science & Engineering, B. Solid-State Materials for Advanced Technology,2004(1/2):148-155. |
| [6] | Zhou H;Zhu S;Hibino M et al.Electrochemical eapaci-tance of self-ordered mesoporous carbon[J].Journal of Power Sources,2003,122:219-223. |
| [7] | Lixia Li;Huaihe Song;Xiaohong Chen .Pore characteristics and electrochemical performance of ordered mesoporous carbons for electric double-layer capacitors[J].Electrochimica Acta,2006(26):5715-5720. |
| [8] | Jurewicz, K;Vix-Guterl, C;Frackowiak, E;Saadallah, S;Reda, A;Parmentier, J;Patarin, J;Beguin, F .Capacitance properties of ordered porous carbon materials prepared by a templating procedure[J].The journal of physics and chemistry of solids,2004(2/3):287-293. |
| [9] | Lee Jinwoo;Yoon Songhun .Synthesis of a new mesoporous carbon and its application to electrochemical double-layer capacitors[J].Chemical communications,1999(21):2177-2178. |
| [10] | Jun S.;Ryoo R.;Kruk M.;Jaroniec M.;Liu Z.;Ohsuna T. Terasaki O.;Joo SH. .Synthesis of new, nanoporous carbon with hexagonally ordered mesostructure[J].Journal of the American Chemical Society,2000(43):10712-10713. |
| [11] | Zhao DY.;Feng JL.;Chmelka BF.;Stucky GD.;Huo QS. .Nonionic triblock and star diblock copolymer and oligomeric surfactant syntheses of highly ordered, hydrothermally stable, mesoporous silica structures[J].Journal of the American Chemical Society,1998(24):6024-6036. |
| [12] | Kruk M.;Jaroniec M.;Kim TW.;Ryoo R. .Synthesis and characterization of hexagonally ordered carbon nanopipes[J].Chemistry of Materials,2003(14):2815-2823. |
| [13] | Lu A;Li W;SchmidtW;el a1 .Easy thesis ofan ordered mesoporous carbon with a hexagonally packed tubular structure[J].CARBON,2004,42:2939-2948. |
| [14] | Jiachang Zhao;Yang Dai;Jingli Xu .Synthesis and Electrochemical Characterization of Mesoporous Carbons Prepared by Chemical Activation[J].Journal of the Electrochemical Society,2008(7):(A)475-480. |
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