DOI | Trouver le DOI : https://doi.org/10.1139/cjc-2014-0297 |
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Auteur | Rechercher : Ionescu, Mihnea Ioan1; Rechercher : Sun, Xueliang; Rechercher : Luan, Ben1 |
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Affiliation | - Conseil national de recherches du Canada. Automobile et les transports de surface
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Format | Texte, Article |
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Sujet | nanomaterials; graphenes; magnetron sputtering; supercapacitor |
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Résumé | This study reports the direct preparation of graphene-based films using magnetron sputtering of graphite target. The nanomaterial was deposited at a low temperature of 620 °C on silicon wafers and on metallic foils including aluminum. The films were used in fabrication of supercapacitors with a planar geometry. Electrochemical characterizations demonstrated that the films produced showed nearly ideal electrical capacitive behavior. The maximum capacitance obtained from cyclic voltammetry analysis was 325 F/g for a scan rate of 1 mV/s. The device is capable of delivering an energy density of 13.9 Wh/kg at a very high power density of 50 000 W/kg for ultrafast scan rate of 1000 mV/s. The graphene nanomaterial electrode retains the electrochemical stability over a large number of charge-discharge cycles. |
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Date de publication | 2015 |
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Dans | |
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Langue | anglais |
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Publications évaluées par des pairs | Oui |
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Numéro NPARC | 21274805 |
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Exporter la notice | Exporter en format RIS |
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Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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Identificateur de l’enregistrement | cbd03d9c-7192-4288-a73d-13fecbe36b71 |
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Enregistrement créé | 2015-04-13 |
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Enregistrement modifié | 2020-04-22 |
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