模板法制备的有序介孔Co_3O_4的电化学电容行为  

Electrochemical Capacitance Performance of Ordered Mesoporous Co_3O_4 Synthesized by Template Method

作　　者：吴雯[1] 王永刚[1] 李峰[1] 夏永姚[1] 

机构地区：[1]复旦大学化学系,上海200433

出　　处：《化学学报》2009年第3期208-212,共5页Acta Chimica Sinica

基　　金：国家自然科学基金(No.20633040);973(No.2007CB209703)资助项目

摘　　要：以介孔硅作为模板合成有序的介孔Co3O4,在6mol/LKOH电解液里进行电化学性能的测试.结果表明具有有序介孔结构的Co3O4,其比容量可以达到250F/g,大约为在550℃下直接煅烧Co(NO3)?6H2O所得的Co3O4容量的4倍.其外该材料还表现出良好的倍率特性,这一现象可归因于有序的介孔结构增大了有效的反应表面积,同时有利于离子在其中传递。Ordered crystallized Co3O4 nanoarrays were synthesized by replicating mesoporous silica tem- plate and its electrochemical capacitance performance was evaluated in 6 mol/L KOH electrolyte solution. Electrochemical tests results indicated that the ordered mesoporous structure of Co3O4 nanoarrays provide a capacitance of about 250 F/g, approximately four times larger than that of Co3O4 prepared by direct calcining Co（NO3）·6H2O at 550 ℃ and also exhibits a good rate capability. This is due to that the well ordered mesoporous structure provide large specific surface area and facilitates the fast transport of the electrolyte.

关 键 词：超级电容器 CO3O4 介孔结构 

分 类 号：TM53[电气工程—电器]