Silica-templated ordered mesoporous carbon thin films as electrodes for micro-capacitors

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Title: Silica-templated ordered mesoporous carbon thin films as electrodes for micro-capacitors
Authors: Leyva García, Sarai | Lozano Castelló, Dolores | Morallon, Emilia | Cazorla-Amorós, Diego
Research Group/s: Materiales Carbonosos y Medio Ambiente | Electrocatálisis y Electroquímica de Polímeros
Center, Department or Service: Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Departamento de Química Física | Universidad de Alicante. Instituto Universitario de Materiales
Keywords: Silica-templated | Mesoporous | Carbon thin films | Electrodes | Micro-capacitors
Knowledge Area: Química Inorgánica | Química Física
Issue Date: 18-Feb-2016
Publisher: Royal Society of Chemistry
Citation: Journal of Materials Chemistry A. 2016, 4: 4570-4579. doi:10.1039/C5TA10552H
Abstract: A binderless continuous thin film of a mesoporous carbon material was directly synthesized on a graphite current collector using an ordered mesoporous silica thin film as a hard-template. The nanostructure of the silica, the composite silica/carbon and the mesoporous carbon thin films was characterized by field emission scanning electron microscopy coupled to energy dispersive X-ray spectroscopy, transmission electron microscopy and Raman spectroscopy. The silica thin film, which was uniformly deposited onto the graphite plate surface, presented mesopores of around 8 nm perpendicularly disposed to the current collector. The carbon thin film, which almost replicates the nanostructure of the silica thin film, showed mesopores of around 2–3 nm. Electrochemical characterization of both the mesoporous carbon and the composite silica/carbon thin films, by cyclic voltammetry and galvanostatic charge–discharge in a 1 M H2SO4 solution, demonstrated that the synthesized thin films showed exceptional properties in terms of specific capacitance, rate performance and electrochemical stability to be used as electrodes for micro-capacitors.
Sponsor: The authors would like to thank the MINECO (MAT2013-42007-P and CTQ2012/31762) and GV and FEDER (PROMETEOII/2014/010). SLG thanks Spanish MECD for the thesis grant.
ISSN: 2050-7488 (Print) | 2050-7496 (Online)
DOI: 10.1039/C5TA10552H
Language: eng
Type: info:eu-repo/semantics/article
Rights: This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.
Peer Review: si
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INV - MCMA - Artículos de Revistas

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