Embedding Co3O4 nanoparticles in SBA-15 supported carbon nanomembrane for advanced supercapacitor materials

作者：Zhi, Jian^*; Deng, Sheng; Zhang, Yuxuan; Wang, Youfu; Hu, Aiguo

来源：Journal of Materials Chemistry A, 2013, 1(9): 3171-3176.

DOI：10.1039/c2ta01253g

• HIGH-PERFORMANCE SUPERCAPACITOR
• SELF-ASSEMBLED MONOLAYERS
• MESOPOROUS CARBON
• ELECTROCHEMICAL CHARACTERIZATION
• BERGMAN CYCLIZATION
• MAGNETIC-PROPERTIES
• OXIDE COMPOSITES
• ELECTRODE
• SURFACE
• SILICA

A three dimensional porous carbon nanomembrane (CNM), silica-supported CNM (SS-CNM), is developed by formation of a self-assembled monolayer of an enediyne compound on the surface of mesoporous silica (SBA-15) followed by Bergman cyclization and carbonization. The SS-CNM is applied as a conductive support for the electroactive material Co3O4 to fabricate advanced supercapacitors. A large fraction of Co3O4 clusters (66% of total weight) are impregnated in the SS-CNM host to form regularly packed nanorods with diameters of 7 nm. The specific capacitance of the supercapacitor electrode material reaches 1086 F g(-1) (1645 F g(-1) based on Co3O4) with aqueous electrolyte. This extraordinary high performance of the electrode material is attributed to the unique pore structure of the SS-CNM support that enhances the use of active material and shortens the transport path of ions and electrons.

• 出版日期2013
• 单位华东理工大学