Carbon nanotube-nanocup hybrid structures for high power supercapacitor applications.

Hahm, Myung Gwan; Leela Mohana Reddy, Arava; Cole, Daniel P; Rivera, Monica; Vento, Joseph A; Nam, Jaewook; Jung, Hyun Young; Kim, Young Lae et al. · Nano Lett · 2012

basic_science · Level V

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Abstract

Here, we design and develop high-power electric double-layer capacitors (EDLCs) using carbon-based three dimensional (3-D) hybrid nanostructured electrodes. 3-D hybrid nanostructured electrodes consisting of vertically aligned carbon nanotubes (CNTs) on highly porous carbon nanocups (CNCs) were synthesized by a combination of anodization and chemical vapor deposition techniques. A 3-D electrode-based supercapacitor showed enhanced areal capacitance by accommodating more charges in a given footprint area than that of a conventional CNC-based device.