Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 1, Issue 9, Pages 3171-3176Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2ta01253g
Keywords
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Funding
- National Natural Science Foundation of China [91023008]
- Ph.D. Programs Foundation of Ministry of Education of China [20100074110002]
- Fundamental Research Funds for the Central Universities
- Shanghai Leading Academic Discipline Project [B502]
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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.
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