Carbon Nanotube–Nanocup Hybrid Structures for High Power Supercapacitor Applications

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 synt...

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Veröffentlicht in:	Nano letters 2012-11, Vol.12 (11), p.5616-5621
Hauptverfasser:	Hahm, Myung Gwan, Leela Mohana Reddy, Arava, Cole, Daniel P, Rivera, Monica, Vento, Joseph A, Nam, Jaewook, Jung, Hyun Young, Kim, Young Lae, Narayanan, Narayanan T, Hashim, Daniel P, Galande, Charudatta, Jung, Yung Joon, Bundy, Mark, Karna, Shashi, Ajayan, Pulickel M, Vajtai, Robert
Format:	Artikel
Sprache:	eng
Schlagworte:	Anodizing Capacitors Carbon Chemical vapor deposition (including plasma-enhanced cvd, mocvd, etc.) Computer numerical control Condensed matter: structure, mechanical and thermal properties Cross-disciplinary physics: materials science rheology Electrodes Exact sciences and technology Footprints Low-dimensional structures (superlattices, quantum well structures, multilayers): structure, and nonelectronic properties Materials science Methods of deposition of films and coatings film growth and epitaxy Nanocrystalline materials Nanoscale materials and structures: fabrication and characterization Nanostructure Nanotubes Physics Supercapacitors Surfaces and interfaces thin films and whiskers (structure and nonelectronic properties) Three dimensional
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Beschreibung
Zusammenfassung:	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.
ISSN:	1530-6984 1530-6992
DOI:	10.1021/nl3027372