摘要
在多元有机酸催化和表面活性剂的作用下,间苯二酚和甲醛反应生成有机凝胶,经过常压干燥、高温炭化得到炭气凝胶。用扫描电镜(SEM)、X射线衍射(XRD)和亚甲基蓝吸附测试表征所制备的样品。结果表明,所制备的炭气凝胶属于非晶态物质,呈现均匀的球状结构,且微球内富含连通的电荷转移的孔道,其比表面积达到740m2/g。循环伏安扫描测试表明,所制备的炭气凝胶具有良好的电化学性能,有望成为超级电容器的电极材料。
The sol-gel polymerization has been employed to prepare organic aerogels through the reaction of resorcinol and formaldehyde with the multiple organic acid as catalyst and cetyltrimethylammonium bromide as surfactant.The gels were dried under ambient pressure and carbonized at high temperature.The samples were characterized by scanning electron microscopy（SEM）,X-ray diffraction analysis（XRD） and the methylene blue adsorption test.The results indicated that the carbon aerogels were amorphous,uniform spheres and the microspheres were abundant in the connected pore for the electronic transfering.The surface area was as high as 740 m2/g.The cyclic voltammetry（CV） was used to study the electrochemical performance of the materials.The test results show that the samples have the perfect electrochemical performance.They could be used as the effective electrode materials for supercapacitors.
出处
《精细化工》
EI
CAS
CSCD
北大核心
2010年第9期840-843,861,共5页
Fine Chemicals
基金
安徽省教育厅重点科研基金(KJ2010A278)
安徽省重大科技项目(09010201005)~~
关键词
炭气凝胶
多元有机酸
常压干燥
功能材料
carbon aerogels
multiple acid
ambient pressure drying
functional materials
