Polypyrrole/iron oxide/reduced graphene oxide ternary composite as a binderless electrode material with high cyclic stability for supercapacitors
| Autor: | Adam Moyseowicz, Agata Śliwak, Grażyna Gryglewicz, Ewa Miniach |
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| Rok vydání: | 2017 |
| Předmět: |
Supercapacitor
Materials science Graphene Mechanical Engineering Composite number Oxide 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Polypyrrole 01 natural sciences Industrial and Manufacturing Engineering 0104 chemical sciences law.invention chemistry.chemical_compound chemistry Mechanics of Materials law Electrode Ceramics and Composites Composite material 0210 nano-technology Ternary operation Graphene oxide paper |
| Zdroj: | Composites Part B: Engineering. 109:23-29 |
| ISSN: | 1359-8368 |
| DOI: | 10.1016/j.compositesb.2016.10.036 |
| Popis: | Herein, we present a facile two-step synthesis of polypyrrole/Fe 2 O 3 /reduced graphene oxide (PFG) ternary composite. It includes the preparation of the binary Fe 2 O 3 /reduced graphene oxide (FG) composite under hydrothermal conditions, followed by oxidative polymerization of pyrrole on the FG composite surface. X-ray diffraction measurements revealed the presence of the α-Fe 2 O 3 phase in both composites. The electrochemical measurements performed using the composite electrodes in a 1 M Na 2 SO 4 solution revealed that the binder-free PFG electrode exhibits a high specific capacitance of 140 F g −1 with an excellent capacitance retention of 93% after 5000 cycles at 1 A g −1 which can be attributed to the synergistic effect between polypyrrole and FG composite. |
| Databáze: | OpenAIRE |
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