Mesoporous Carbon Materials as Electrodes for Electrochemical Double-Layer Capacitor

Conference · Sun Dec 31 23:00:00 EST 2006

DOI:https://doi.org/10.1557/PROC-0973-BB07-04· OSTI ID:931099

Park, Sea H ^[1]; Liang, Chengdu ^[1]; Dai, Sheng ^[1]; Dudney, Nancy J ^[1]; DePaoli, David W ^[1]

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1. ORNL

Nanostructured carbon materials with a regular array and narrow size distribution of mesopores have been synthesized at Oak Ridge National Laboratory via the self-assembly of block copolymers as soft templates. One promising application for these materials is as electrodes for electrochemical double-layer capacitors. To evaluate the performance, electrodes were prepared by coating the precursor onto fibrous carbon paper, followed by curing and pyrolysis at 850 C. The resulting mesoporous carbon has a surface area of 310 m{sup 2}/g and an average pore size of 8.5 nm. Results from cyclic voltammetry and impedance spectroscopy experiments using a sulfuric acid electrolyte showed high specific capacitance values of up to 300 F/g. For comparison, a commercially available aerogel carbon coated paper was also examined.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: ORNL LDRD Director's R&D
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 931099
• Country of Publication: United States
• Language: English