Graphene/Reduced Graphene Oxide-Carbon Nanotubes Composite Electrodes: From Capacitive to Battery-Type Behaviour
Thanks to the advanced technologies for energy generation such as solar cells and thermo- or piezo-generators the amount of electricity transformed from light, heat or mechanical pressure sources can be significantly enhanced. However, there is still a demand for effective storage devices to conserv...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-05-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/11/5/1240 |
| _version_ | 1797534964141522944 |
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| author | Olena Okhay Alexander Tkach |
| author_facet | Olena Okhay Alexander Tkach |
| author_sort | Olena Okhay |
| collection | DOAJ |
| description | Thanks to the advanced technologies for energy generation such as solar cells and thermo- or piezo-generators the amount of electricity transformed from light, heat or mechanical pressure sources can be significantly enhanced. However, there is still a demand for effective storage devices to conserve electrical energy which addresses the wide range of large stationary applications from electric vehicles to small portable devices. Among the large variety of energy-storage systems available today, electrochemical energy sources and, in particular, supercapacitors (SC), are rather promising in terms of cost, scaling, power management, life cycle and safety. Therefore, this review surveys recent achievements in the development of SC based on composites of such carbon-derived materials as graphene (G) and reduced graphene oxide (rGO) with carbon nanotubes (CNT). Various factors influencing the specific capacitance are discussed, while specific energy and power as well as cycling stability of SC with G/rGO-CNT composite electrode materials are overviewed. |
| first_indexed | 2024-03-10T11:37:58Z |
| format | Article |
| id | doaj.art-d92981fa122b4e68ae4ccffc13234289 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T11:37:58Z |
| publishDate | 2021-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-d92981fa122b4e68ae4ccffc132342892023-11-21T18:47:04ZengMDPI AGNanomaterials2079-49912021-05-01115124010.3390/nano11051240Graphene/Reduced Graphene Oxide-Carbon Nanotubes Composite Electrodes: From Capacitive to Battery-Type BehaviourOlena Okhay0Alexander Tkach1TEMA-Center for Mechanical Technology and Automation, Department of Mechanical Engineering, University of Aveiro, 3810-193 Aveiro, PortugalCICECO-Aveiro Institute of Materials, Department of Materials and Ceramic Engineering, University of Aveiro, 3810-193 Aveiro, PortugalThanks to the advanced technologies for energy generation such as solar cells and thermo- or piezo-generators the amount of electricity transformed from light, heat or mechanical pressure sources can be significantly enhanced. However, there is still a demand for effective storage devices to conserve electrical energy which addresses the wide range of large stationary applications from electric vehicles to small portable devices. Among the large variety of energy-storage systems available today, electrochemical energy sources and, in particular, supercapacitors (SC), are rather promising in terms of cost, scaling, power management, life cycle and safety. Therefore, this review surveys recent achievements in the development of SC based on composites of such carbon-derived materials as graphene (G) and reduced graphene oxide (rGO) with carbon nanotubes (CNT). Various factors influencing the specific capacitance are discussed, while specific energy and power as well as cycling stability of SC with G/rGO-CNT composite electrode materials are overviewed.https://www.mdpi.com/2079-4991/11/5/1240energy storagemultifunctional materialscompositesgraphenenanostructures |
| spellingShingle | Olena Okhay Alexander Tkach Graphene/Reduced Graphene Oxide-Carbon Nanotubes Composite Electrodes: From Capacitive to Battery-Type Behaviour Nanomaterials energy storage multifunctional materials composites graphene nanostructures |
| title | Graphene/Reduced Graphene Oxide-Carbon Nanotubes Composite Electrodes: From Capacitive to Battery-Type Behaviour |
| title_full | Graphene/Reduced Graphene Oxide-Carbon Nanotubes Composite Electrodes: From Capacitive to Battery-Type Behaviour |
| title_fullStr | Graphene/Reduced Graphene Oxide-Carbon Nanotubes Composite Electrodes: From Capacitive to Battery-Type Behaviour |
| title_full_unstemmed | Graphene/Reduced Graphene Oxide-Carbon Nanotubes Composite Electrodes: From Capacitive to Battery-Type Behaviour |
| title_short | Graphene/Reduced Graphene Oxide-Carbon Nanotubes Composite Electrodes: From Capacitive to Battery-Type Behaviour |
| title_sort | graphene reduced graphene oxide carbon nanotubes composite electrodes from capacitive to battery type behaviour |
| topic | energy storage multifunctional materials composites graphene nanostructures |
| url | https://www.mdpi.com/2079-4991/11/5/1240 |
| work_keys_str_mv | AT olenaokhay graphenereducedgrapheneoxidecarbonnanotubescompositeelectrodesfromcapacitivetobatterytypebehaviour AT alexandertkach graphenereducedgrapheneoxidecarbonnanotubescompositeelectrodesfromcapacitivetobatterytypebehaviour |