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Mendoza-Sanchez, B., Brousse, T., Ramirez-Castro, C., Nicolosi, V. & Grant, P. S. (2013) An investigation of nanostructured thin film alpha-MoO3 based supercapacitor electrodes in an aqueous electrolyte. Electrochim. Acta, 91 253–260.
Added by: Laurent Cournède (2016-03-10 21:23:31) |
| Type de référence: Article DOI: 10.1016/j.electacta.2012.11.127 Numéro d'identification (ISBN etc.): 0013-4686 Clé BibTeX: MendozaSanchez2013 Voir tous les détails bibliographiques  |
Catégories: ST2E Mots-clés: alpha-MoO3 nanobelts, anodic deposition, behavior, Capacitance, capacitors, chromium-oxide cathodes, Cyclability, electrochemical supercapacitor, hydrogen molybdenum bronze, Lithium batteries, Manganese oxide, mno2, MoO3, Redox activity, supercapacitors Créateurs: Brousse, Grant, Mendoza-Sanchez, Nicolosi, Ramirez-Castro Collection: Electrochim. Acta |
Consultations : 1/561
Indice de consultation : 4% Indice de popularité : 1% |
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The potential for MoO3 use as a supercapacitor electrode in aqueous electrolytes was investigated, alpha-MoO3 nanobelts were synthesized using a hydrothermal method and then thin-film electrodes were manufactured by spray deposition. Electrochemical testing in several aqueous electrolytes showed significant charge storage in 1 M H2SO4 with a complex electrochemical activity that was further investigated by X-ray photoelectron spectroscopy and various electrochemical characterization methods. In a 0-1 V (vs Ag/AgCl) electrochemical window, MoO3 was reduced to a mixture of lower valence oxides with concentrations varying as Mo (5+) {>} Mo (4+) {>} Mo (6+), with MoO2 as the main component at potentials below 0.185 V (vs Ag/AgCl). The degree of redox reversibility was evaluated in order to optimize the electrochemical window for enhanced cyclability. A moderate capacitance of 8.8 F g(-1) (64 mu F cm(-2)) was fully retained for 720 cycles in an optimized electrochemical window of 0.26-0.43 V (vs Ag/AgCl). (C) 2012 Elsevier Ltd. All rights reserved.
Added by: Laurent Cournède |