| DOI | Resolve DOI: https://doi.org/10.1021/jz301207g |
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| Author | Search for: Xu, Zhanwei1; Search for: Li, Zhi1; Search for: Holt, Chris M. B.1; Search for: Tan, Xuehai1; Search for: Wang, Huanlei1; Search for: Amirkhiz, Babak Shalchi1; Search for: Stephenson, Tyler1; Search for: Mitlin, David1 |
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| Affiliation | - National Research Council of Canada. Security and Disruptive Technologies
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| Format | Text, Article |
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| Subject | electrochemical capacitor; three-dimensional; graphene; carbon nanotube; microwave |
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| Abstract | We employed a microwave synthesis process of cobalt phthalocyanine molecules templated by acid-functionalized multiwalled carbon nanotubes to create three-dimensional sponge-like graphene nanoarchitectures suited for ionic liquid-based electrochemical capacitor electrodes that operate at very high scan rates. The sequential “bottom-up” molecular synthesis and subsequent carbonization process took less than 20 min to complete. The 3D nanoarchitectures are able to deliver an energy density of 7.1 W·h kg–¹ even at an extra high power density of 48 000 W kg–¹. In addition, the ionic liquid supercapacitor based on this material works very well at room temperature due to its fully opened structures, which is ideal for the high-power energy application requiring more tolerance to temperature variation. Moreover, the structures are stable in both ionic liquids and 1 M H2SO4, retaining 90 and 98% capacitance after 10 000 cycles, respectively. |
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| Publication date | 2012-10-18 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 21268898 |
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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 | 242f5d0a-1503-4fc0-840e-6e1ea0a2c0df |
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| Record created | 2013-11-22 |
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| Record modified | 2020-04-21 |
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