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Aligned carbon nanotube/zinc oxide nanowire hybrids as high performance electrodes for supercapacitor applications |
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| Author: | Al-Asadi, Ahmed S.1,2; Henley, Luke Alexander1; Wasala, Milinda1; |
| Organizations: |
1Department of Physics, Southern Illinois University Carbondale, Carbondale, Illinois 62901, USA 2Department of Physics, College of Education for Pure Science, University of Basrah, Basrah 61001, Iraq 3Department of Physics and Center for 2-Dimentional and Layered Materials, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
4Department of Chemistry and Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
5Department of Mechanical Engineering and Energy Processes, Southern Illinois University Carbondale, Carbondale, Illinois 62901, USA 6Microelectronics Research Unit, Faculty of Information Technology and Electrical Engineering, University of Oulu, P.O. Box 4500, FI-90014, Finland |
| Format: | article |
| Version: | accepted version |
| Access: | open |
| Online Access: | PDF Full Text (PDF, 0.6 MB) |
| Persistent link: | http://urn.fi/urn:nbn:fi-fe2019052016068 |
| Language: | English |
| Published: |
American Institute of Physics,
2017
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| Publish Date: | 2019-05-20 |
| Description: |
AbstractCarbon nanotube/metal oxide based hybrids are envisioned as high performance electrochemical energy storage electrodes since these systems can provide improved performances utilizing an electric double layer coupled with fast faradaic pseudocapacitive charge storage mechanisms. In this work, we show that high performance supercapacitor electrodes with a specific capacitance of ∼192 F/g along with a maximum energy density of ∼3.8 W h/kg and a power density of ∼28 kW/kg can be achieved by synthesizing zinc oxide nanowires (ZnO NWs) directly on top of aligned multi-walled carbon nanotubes (MWCNTs). In comparison to pristine MWCNTs, these constitute a 12-fold of increase in specific capacitance as well as corresponding power and energy density values. These electrodes also possess high cycling stability and were able to retain ∼99% of their specific capacitance value over 2000 charging discharging cycles. These findings indicate potential use of a MWCNT/ZnO NW hybrid material for future electrochemical energy storage applications. see all
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| Series: |
Journal of applied physics |
| ISSN: | 0021-8979 |
| ISSN-E: | 1089-7550 |
| ISSN-L: | 0021-8979 |
| Volume: | 121 |
| Issue: | 12 |
| Article number: | 124303 |
| DOI: | 10.1063/1.4979098 |
| OADOI: | https://oadoi.org/10.1063/1.4979098 |
| Type of Publication: |
A1 Journal article – refereed |
| Field of Science: |
114 Physical sciences 116 Chemical sciences 221 Nanotechnology |
| Subjects: | |
| Funding: |
A.S.A is thankful for the financial support from Higher committee for educational development in Iraq (HCED-IRAQ). ST and KM would like to acknowledge NSF Grant No. 1133143 for partial support of this work. ST would also like to acknowledge NSF Grant No. 1623238 for partial support of this work. |
| Copyright information: |
© 2017 AIP Publishing LLC. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Journal of Applied Physics 2017 121:12 and may be found at https://doi.org/10.1063/1.4979098. |