氮掺杂碳气凝胶电极材料的制备及性能  

Preparation and performance of nitrogen-doped carbon aerogels as electrode materials

作　　者：刘西川[1,2] 袁磊[1] 冯灏[2] 付志兵[1] 王朝阳[1] 孙卫国[2] 唐永建[1] 

机构地区：[1]中国工程物理研究院激光聚变研究中心,四川绵阳621900 [2]西华大学材料科学与工程学院,成都610039

出　　处：《强激光与粒子束》2012年第12期2848-2852,共5页High Power Laser and Particle Beams

基　　金：中国工程物理研究院科学技术发展基金项目(2009A0302020;2010B0401056)

摘　　要：以三聚氰胺(M)、间苯二酚(R)和甲醛(F)为原料,经溶胶-凝胶法、超临界干燥和高温碳化制备了系列的氮掺杂碳气凝胶(NCAs)。X射线光电子能谱(XPS)分析表明,氮元素成功地引入到碳气凝胶中,并且可以通过调节三聚氰胺掺杂量来控制氮掺杂量;扫描电子显微镜(SEM)和N2吸附测试显示出不同氮掺杂量的碳气凝胶的微观结构差异较大,随着氮含量的增加,比表面积有先减后增的趋势;在6mol/L KOH溶液中进行的恒流充放电和循环伏安测试表明,引入氮元素能够极大地改善碳气凝胶的电化学性能,最高比电容量达176F·g-1,并且凝胶具有良好的电容特性和可逆性。Nitrogen-doped carbon aerogels（NCAs） were synthesized from melamine,resorcinol and formaldehyde by sol-gel,supercritical drying and high-temperature carbonization process.The structure properties and function of the NCAs were characterized by means of XPS,SEM and nitrogen adsorption,showing that the nitrogen was successfully doped into carbon aerogels.Meanwhile,the N-doping content and the microstructures of the NCAs distinctly depend on the amount of melamine.Besides,the electrochemical performances of the NCAs were tested by galvanostatic charge-discharge and cyclic voltammetry in 6 mol/L KOH solution,and the results indicate that their electrochemical performances are greatly improved after N-doping with the highest specific capacitance reaching 176 F·g^-1.

关 键 词：氮掺杂 碳气凝胶 三聚氰胺 超级电容器 比电容 

分 类 号：TQ177[化学工程—硅酸盐工业]