摘要
采用简单化学沉淀法,以十六烷基三甲基溴化铵(CTAB)为模板,Co(NO3)2.6H2O和NaOH为原料,空气作为温和氧化剂,室温下合成了具有花状分级多孔结构的Co3O4纳米颗粒电极材料。X-射线衍射(XRD)表明,产物中主要成分为Co3O4;扫面电镜的结果显示,制备的材料具有菜花状分级多孔结构;电化学测试结果表明,最高比容量达250 F/g,且经过1 000次循环后,容量保持了84%,显示出良好的超级电容性能。
Porous cobalt oxide with cauliflower-like structure has been successfully synthesized by a facile chemical precipitation method assisted by cetyltrimethylammonium bromide（CTAB） micelles using Co（NO3）2·6H2O and NaOH as materials,air as mild oxidant.The results of XRD and SEM indicated that the prepared material was mainly composed of Co3O4 and had a cauliflower-like structure.Electrochemical characterization indicated that a maximum specific capacitance of 250 F/g could be achieved and exhibited excellent long cycle life along with 84% specific capacitance retained after 1 000 cycle tests.
出处
《应用化工》
CAS
CSCD
2012年第1期102-105,共4页
Applied Chemical Industry
关键词
超级电容器
四氧化三钴
超级电容性能
supercapacitor
cobalt oxide nanoparticles
supercapacitive properties
