Synthesis and controlled sulfidation of Ni-Co alloy on reduced graphene oxide as an electrode with enhanced conductivity and capacitance for supercapacitors
| Autor: | Dong Hwang Chen, Chieh Lun Wu, Pin Ru Wu |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Supercapacitor
Materials science Graphene Mechanical Engineering Inorganic chemistry Metals and Alloys Sulfidation Oxide Nanoparticle 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Capacitance 0104 chemical sciences law.invention chemistry.chemical_compound chemistry Mechanics of Materials law Electrode Pseudocapacitor Materials Chemistry 0210 nano-technology |
| Zdroj: | Journal of Alloys and Compounds. 735:409-416 |
| ISSN: | 0925-8388 |
| DOI: | 10.1016/j.jallcom.2017.11.041 |
| Popis: | In this study, the partially sulfidized Ni-Co/reduced graphene oxide (NCS/NC/RGO) hybrid was developed as a supercapacitor electrode material. Because Ni-Co sulfide (NCS) possessed good pseudocapacitor property and non-sulfidized Ni-Co (NC) alloy had high conductivity, we attempted to optimize the electrochemical performance of NCS/NC/RGO hybrid by controlling the sulfidation of NC/RGO hybrid. RGO was incorporated as a substrate to help the dispersion of NCS/NC nanoparticles and contribute some capacitance. It was demonstrated that an appropriate sulfidation of NC/RGO hybrid could lead to the highest capacitance effectively. Moreover, the optimal NCS/NC/RGO hybrid also exhibited good stability. The result revealed that the strategy to optimize the capacitor performance of NCS/NC/RGO hybrid via the controlled sulfidation of NC/RGO hybrid was indeed effective. |
| Databáze: | OpenAIRE |
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