Nanostructured carbon films have been grown at room temperature by supersonic cluster beam deposition. Due to a structure based on nanotube embryos and a porosity with grain sizes of a few tens of nanometers, these films have a highly accessible surface area needed for electrochemical applications such as supercapacitors. Films with a density of 1 g/cm3 show, in the dc regime, a specific capacitance per electrode of 75 F/g on a single-cell device with polycarbonate as the organic electrolyte. The resulting energy and power densities of cluster-assembled carbon electrodes are 76 Wh/kg and 506 kW/kg. The possibility of depositing nanostructured films over a large area on a variety of substrates makes cluster-beam deposition very interesting for the realization of supercapacitors.
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25 October 1999
Research Article|
October 25 1999
Supercapacitors based on nanostructured carbon electrodes grown by cluster-beam deposition
L. Diederich;
L. Diederich
INFM-Dipartimento di Fisica, Università di Milano, Via Celdria 16, I-20133 Milano, Italy
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E. Barborini;
E. Barborini
INFM-Dipartimento di Fisica, Università di Milano, Via Celdria 16, I-20133 Milano, Italy
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P. Piseri;
P. Piseri
INFM-Dipartimento di Fisica, Università di Milano, Via Celdria 16, I-20133 Milano, Italy
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A. Podestà;
A. Podestà
INFM-Dipartimento di Fisica, Università di Milano, Via Celdria 16, I-20133 Milano, Italy
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P. Milani;
P. Milani
INFM-Dipartimento di Fisica, Università di Milano, Via Celdria 16, I-20133 Milano, Italy
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A. Schneuwly;
A. Schneuwly
Montena Components SA, CH-1728 Rossens, Switzerland
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R. Gallay
R. Gallay
Montena Components SA, CH-1728 Rossens, Switzerland
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Appl. Phys. Lett. 75, 2662–2664 (1999)
Article history
Received:
July 02 1999
Accepted:
August 24 1999
Citation
L. Diederich, E. Barborini, P. Piseri, A. Podestà, P. Milani, A. Schneuwly, R. Gallay; Supercapacitors based on nanostructured carbon electrodes grown by cluster-beam deposition. Appl. Phys. Lett. 25 October 1999; 75 (17): 2662–2664. https://doi.org/10.1063/1.125111
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