Polyethylene glycol mediated synthesis of iron vanadate (FeVO4) nanoparticles with supercapacitive features
| Autor: | Allen J. Britten, B. Saravanakumar, N. Karthikeyan, Prakash Periasamy, Martin Mkandawire |
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| Rok vydání: | 2020 |
| Předmět: |
Supercapacitor
Materials science Polymers and Plastics Metals and Alloys Nanoparticle 02 engineering and technology Polyethylene glycol 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Capacitance 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Biomaterials chemistry.chemical_compound Chemical engineering chemistry Electrode PEG ratio Vanadate 0210 nano-technology |
| Zdroj: | Materials Research Express. 7:064010 |
| ISSN: | 2053-1591 |
| DOI: | 10.1088/2053-1591/ab997f |
| Popis: | Binary transition metal oxides, such as iron vanadate (FeVO4), possess unleashed potential to be the best electrode material for supercapacitor, owing to their high capacitance, stability and conductivity. This present work reports investigations on the influence of a surfactant, polyethylene glycol (PEG 4000), on the structure, morphology and electrochemical behaviour of FeVO4 nanoparticles. The P4-FeVO4 exhibited specific capacitance of 428.0 Fg−1 at a current density of 2.0 Ag−1, and arguably better performance and cyclic stability than FeVO4 synthesised without PEG 4000. Thus, PEG 4000 significantly influenced the morphological and electrochemical performance of the FeVO4. Furthermore, the assembled P4-FeVO4 based symmetric capacitor device had a specific capacitance of 101.0 Fg−1 with an energy density of 14.1 Whkg−1. This improved electrochemical performance of the P4-FeVO4 based devices is attributed to the physicochemical properties of P4-FeVO4 nanoparticles, mediated by the PEG 4000. |
| Databáze: | OpenAIRE |
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