| DOI | Resolve DOI: https://doi.org/10.1139/cjc-2014-0297 |
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| Author | Search for: Ionescu, Mihnea Ioan1; Search for: Sun, Xueliang; Search for: Luan, Ben1 |
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| Affiliation | - National Research Council of Canada. Automotive and Surface Transportation
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| Format | Text, Article |
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| Subject | nanomaterials; graphenes; magnetron sputtering; supercapacitor |
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| Abstract | 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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| Publication date | 2015 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 21274805 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | cbd03d9c-7192-4288-a73d-13fecbe36b71 |
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| Record created | 2015-04-13 |
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| Record modified | 2020-04-22 |
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