DBD plasma-tuned functionalization of edge-enriched graphene nanoribbons for high performance supercapacitors
| Autor: | Jinhe Yu, Yinzhou Song, Yongzhen Yang, Lulu Sun, Han Zhang, Zongbin Zhao, Jieshan Qiu, Xuguang Liu, Changyu Leng, Xuzhen Wang |
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| Rok vydání: | 2020 |
| Předmět: |
Supercapacitor
Materials science General Chemical Engineering chemistry.chemical_element Nanotechnology 02 engineering and technology Dielectric barrier discharge 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Capacitance Energy storage Pseudocapacitance 0104 chemical sciences chemistry Electrochemistry Surface modification 0210 nano-technology Carbon Graphene nanoribbons |
| Zdroj: | Electrochimica Acta. 337:135741 |
| ISSN: | 0013-4686 |
| DOI: | 10.1016/j.electacta.2020.135741 |
| Popis: | Introducing oxygenated functionalities into carbon networks can provide additional pseudocapacitance for supercapacitors. However, excessive and unstable oxygen functional groups usually cause low electrical conductivity and rate performance. Herein, we propose a novel and simple strategy for tunable functionalization of edge-enriched graphene nanoribbons by means of dielectric barrier discharge (DBD) plasma. The functionalized graphene nanoribbons from DBD plasma exhibit high specific capacitance owing to the suitable oxygen functional groups and the intrinsic edge-enriched structure. The assembled symmetric supercapacitor device based on as-prepared graphene nanoribbons with oxygenated functionalities exhibits a superior energy density of 12.65 Wh kg−1, and 93.76% capacitance retention after 10,000 cycles in 1 M Na2SO4 aqueous electrolyte. This work may find a new way to finely control functionalities on carbon nanomaterials for high-performance energy storage devices. |
| Databáze: | OpenAIRE |
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