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A symmetric carbon/carbon supercapacitor operating at 1.6 V by using a neutral aqueous solution

Demarconnay, L. ; Raymundo-Piñero, E. ; Béguin, F.

Electrochemistry communications, 2010-10, Vol.12 (10), p.1275-1278 [Periódico revisado por pares]

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Título:
A symmetric carbon/carbon supercapacitor operating at 1.6 V by using a neutral aqueous solution
Autor: Demarconnay, L. ; Raymundo-Piñero, E. ; Béguin, F.
Assuntos: Activated carbon ; Applied sciences ; Aqueous neutral electrolyte ; Capacitors. Resistors. Filters ; Cycle life ; Electrical engineering. Electrical power engineering ; Exact sciences and technology ; High voltage ; Symmetric supercapacitor ; Various equipment and components
É parte de: Electrochemistry communications, 2010-10, Vol.12 (10), p.1275-1278
Descrição: A high voltage symmetric carbon/carbon supercapacitor was built using a Na 2SO 4 aqueous solution. This system exhibits an excellent cycle life during thousands of cycles up to voltage values as high as 1.6 V. Three-electrode investigations show a particularly high potential window, ΔE = 2 V, for the considered activated carbon in Na 2SO 4. However, in a two-electrode cell, when the voltage is higher than 1.6 V, the potential of the positive electrode is beyond the oxidation potential of water, and AC is oxidized. These results demonstrate the potentialities of Na 2SO 4 for developing high energy density systems.
Editor: Lausanne: Elsevier B.V
Idioma: Inglês

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