Low-temperature vapour phase polymerized polypyrrole nanobrushes for supercapacitors
| Autor: | Luciano M. Santino, Julio M. D’Arcy, Shinjita Acharya |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Supercapacitor
Conductive polymer Materials science Renewable Energy Sustainability and the Environment Nanotechnology 02 engineering and technology General Chemistry Substrate (electronics) 010402 general chemistry 021001 nanoscience & nanotechnology Polypyrrole 01 natural sciences Capacitance Lithium perchlorate 0104 chemical sciences chemistry.chemical_compound chemistry Chemical engineering Nanofiber Electrode General Materials Science 0210 nano-technology |
| Zdroj: | Journal of Materials Chemistry A. 5:11772-11780 |
| ISSN: | 2050-7496 2050-7488 |
| DOI: | 10.1039/c7ta00369b |
| Popis: | A low-temperature modified vapour-phase synthesis allows for the deposition of high aspect ratio, conductive and capacitive one-dimensional nanostructures of the conducting polymer polypyrrole onto three-dimensional fibrous substrates. Nanofibrillar polypyrrole resembling nanobrushes can be deposited at temperatures as low as 50 °C without the use of hard templates. When deposited on a conductive substrate such as hard carbon paper, the nanofibers exhibit a three-electrode specific capacitance of 144.7 F g−1 over a 1.2 V window in 1 M lithium perchlorate with good reversibility. Two electrode electrochemical capacitors fabricated using polypyrrole on hard carbon paper exhibit a specific energy ranging from 7 to 13 W h kg−1 based on average electrode active mass with a maximum charging voltage between 0.6 and 1 V. Furthermore, the devices can undergo 200 000 cycles while retaining 70% of their initial capacitance when charged to 0.6 V. This work represents a significant advance in the synthesis of nanostructured polypyrrole from the vapor phase. |
| Databáze: | OpenAIRE |
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