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Title

An activated carbon monolith as an electrode material for supercapacitors

AuthorsRuiz Ruiz, Vanesa ; Blanco Rodríguez, Clara ; Santamaría Ramírez, Ricardo ; Ramos-Fernández, J. M.; Martínez-Escandell, M.; Sepúlveda-Escribano, A.; Rodríguez-Reinoso, F.
KeywordsElectrochemical capacitors
Aerogel electrodes
Surface
Deionization
Polyaniline
Pyrolysis
Behavior
Porosity
Pitch
Issue DateJan-2009
PublisherElsevier
CitationCarbon 47(1): 195-200 (2009)
AbstractActivated carbon binderless monoliths with high consistency and large porosity, synthesised from a mesophase pitch, are studied as electrodes for supercapacitors. The electrochemical cells prepared provided high capacitance values in sulphuric acid media (334 F g−1) and very low electrical resistivity, which results in a very efficient energy storage device (12 Wh Kg−1 maximum energy density and 12,000 W Kg−1 maximum power density). Long-term cycling experiments showed excellent stability with a reduction of the initial capacitance values of 19% after performing 23,000 galvanostatic cycles at ~300 mA g−1.
Description6 pages, 6 figures, 1 table.-- Available online Oct 2, 2008.
Publisher version (URL)http://dx.doi.org/10.1016/j.carbon.2008.09.048
URIhttp://hdl.handle.net/10261/11255
DOI10.1016/j.carbon.2008.09.048
ISSN0008-6223
Appears in Collections:(INCAR) Artículos
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