Nitrogen and sulfur co-doped graphene composite electrode with high electrocatalytic activity for vanadium redox flow battery application
| Autor: | Hong Sun, Zhichao Xue, Qiang Li, Anyu Bai, Yang Zheng |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Graphene General Chemical Engineering chemistry.chemical_element Vanadium 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Sulfur Flow battery Redox 0104 chemical sciences law.invention chemistry.chemical_compound chemistry Chemical engineering Thiourea law Electrode Electrochemistry Graphite 0210 nano-technology |
| Zdroj: | Electrochimica Acta. 362:137223 |
| ISSN: | 0013-4686 |
| DOI: | 10.1016/j.electacta.2020.137223 |
| Popis: | Nitrogen and sulfur co-doped graphene has been decorated on graphite felt electrode via a hydrothermal treatment using thiourea as sulfur and nitrogen sources for vanadium redox flow battery application. Our results demonstrate that the modification of sulfur and nitrogen co-doped graphene on graphite felt provides an effective way to improve surface area and introduce functional groups for vanadium redox reaction, resulting in a significant improvement in energy efficiency (85.37% at a current density of 80 mA/cm2), power density (0.4925 W/cm2), discharge capacity and capacity retention. These results reveal that the modification of nitrogen and sulfur co-doped graphene on graphite felts is a promising method for the enhancement of vanadium redox flow battery performance. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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