Supercapacitors based on nanostructured carbon electrodes grown by cluster-beam deposition

作者：Léon Diederich, E. Barborini, P. Piseri, Alessandro Podestà, Paolo Milani, A. Schneuwly, R. Gallay · 发表于：Applied Physics Letters · 年份：1999 · DOI：10.1063/1.125111 · 被引用次数：144 · 研究领域：Supercapacitor Materials and Fabrication、Electrocatalysts for Energy Conversion、Diamond and Carbon-based Materials Research

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.