【作者】 李小燕； 蔡江涛； 刘国阳； 张亚婷； 邱介山； 周安宁；

【Author】 Xiaoyan Li;J. Cai;G. Liu;Y. Zhang;J. Qiu;A. Zhou;College of Chemistry & Chemical Engineering, Xi’an University of Science and Technology;Carbon Research Laboratory, Liaoning Key Lab for Energy Materials and Chemical Engineering, Dalian University of Technology;

【机构】 西安科技大学化学与化工学院； 大连理工大学精细化工国家重点实验室炭素材料研究室；

【摘要】 炭材料由于比表面积大、孔结构丰富、电导率高、化学稳定性好且价格低廉等特点而被广泛用于吸附分离、催化、超级电容器电极材料[1]等。目前超级电容器炭电极材料的研究主要围绕提高其能量密度、降低内阻、提高电导率和性价比、良好的电解液浸润性以及具有特殊结构的炭电极材料上。而制备富氮、磷的介孔-微孔炭材料,是实现超级电容器同时具有高比能量和高功率性能的有效途径。文中选用聚丙烯腈为碳源,SBA-15[2]为模板剂合成介孔炭材料,并通过H3PO4及CO2活化分别对富氮介孔炭材料掺杂和制造大量微孔,制备出氮、磷共掺杂的介孔-微孔炭材料,并探索了CO2活化对介孔炭材料比表面积及有序性的影响。结果表明:CO2活化可以大幅提高炭材料的比表面积,由未活化的281 m2/g增加到活化后的1291 m2/g,但是经CO2活化处理后炭材料孔结构有序性相对降低;掺磷后炭材料的比电容大幅提高:从60F/g提高到132F/g。更多还原

【Abstract】 To prepare the meso-microporous carbon materials which rich in nitrogen and phosphorus is an effective way for achieving super capacitor with high specific energy and high power performance. Using polyacrylonitrile(PAN) as the carbon source, SBA-15 as the template to synthesize mesoporous carbon material, doping H3PO4 and CO2 activation on mesoporous carbon material which rich in nitrogen for preparing meso-microporous carbon materials codoped with nitrogen and phosphorus, and exploring the effect of CO2 activation on the specific surface area and order of carbon material. The results indicate that CO2 activation can improve the specific surface area of carbon materials significantly, increased from 281 m2/g to 1291 m2/g, but the order of carbon materials without CO2 activation was relatively high, and phosphorus-doped enhanced the capacitance of carbon materials. It is believed that carbon materials with lager surface area, well-developed yet ordered mesoporous structure, and high heteroatom nitrogen content will be attractive in many fields such as adsorption, catalysis and energy storage and conversion.更多还原