以煤沥青质为碳源,气相法二氧化硅为模板,制备中孔炭(Mesoporous carbon,MC),通过CO2活化调变其表面结构.用TEM、N2吸附、电化学工作站及Land电池测试系统等对产品炭的微观结构及电化学性能进行研究.结果表明:在活化温度900℃、CO2气流量100mL/min条件下,随着活化时间的增加,炭产品的BET比表面积、微孔孔容均呈增加趋势.在活化时间为150min时,产品炭的BET比表面积可达1 360m2/g,比活化前的比表面积提高了约88%.产品炭作为超级电容器电极材料表现出良好的电化学性能,活化时间为120min的样品,在1000mA/g的电流密度下,材料的质量比电容为135F/g,10000次充放电循环后,比电容值保持率高达93%.
参考文献
| [1] | 谷小会,史士东,周铭.神华煤直接液化残渣中沥青烯组分的分子结构研究[J].煤炭学报,2006(06):785-789. |
| [2] | Sophie Badre;Cristiane Carla Goncalves;Koyo Norinaga .Molecular size and weight of asphaltene and asphaltene solubility fractions from coals, crude oils and bitumen[J].Fuel,2006(1):1-11. |
| [3] | 周颖,刘小雪,王六平,许钦一,王志超,邱介山.基于预沥青烯的有序结构中孔炭及其电化学性能[J].化工学报,2009(09):2359-2364. |
| [4] | 周颖,余桂红,张艳,李俊宁,邱介山.模板法制备沥青烯基有序结构中孔炭[J].新型炭材料,2008(01):63-68. |
| [5] | 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. |
| [6] | Songhun Yoon;Seung M. Oh;Chulwee Lee .Direct template synthesis of mesoporous carbon and its application to supercapacitor electrodes[J].Materials Research Bulletin: An International Journal Reporting Research on Crystal Growth and Materials Preparation and Characterization,2009(8):1687-1691. |
| [7] | Hsin-Yu Liu;Kai-Ping Wang;Hsisheng Teng .A simplified preparation of mesoporous carbon and the examination of the carbon accessibility for electric double layer formation[J].Carbon: An International Journal Sponsored by the American Carbon Society,2005(3):559-566. |
| [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] | Ryoo R;Joo S H;Jun S .Synthesis of highly ordered carbon molecular sieves via template -mediated structural transformation[J].Journal of Physical Chemistry B,1999,103(37):7743-7746. |
| [10] | Yan Yan;Jing Wei;Fuqiang Zhang .The pore structure evolution and stability of mesoporous carbon FDU-15 under CO2, O2 or water vapor atmospheres[J].Microporous and mesoporous materials: The offical journal of the International Zeolite Association,2008(1/3):305-314. |
| [11] | Fuertes A B;Pico F;Rojo J M .Influence of pore structure on electric double-layer capacitance of template mesoporous carbons[J].Journal of Power Sources,2004,133(02):329-336. |
| [12] | W. Xing;C.C. Huang;S.P. Zhuo .Hierarchical porous carbons with high performance for supercapacitor electrodes[J].Carbon: An International Journal Sponsored by the American Carbon Society,2009(7):1715-1722. |
| [13] | Dustin Banham;Fangxia Feng;Jason Burt .Bimodal, templated mesoporous carbons for capacitor applications[J].Carbon: An International Journal Sponsored by the American Carbon Society,2010(4):1056-1063. |
| [14] | Yonghui Deng;Chong Liu;Ting Yu .Facile Synthesis of Hierarchically Porous Carbons from Dual Colloidal Crystal/Block Copolymer Template Approach[J].Chemistry of Materials: A Publication of the American Chemistry Society,2007(13):3271-3277. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%