Abstract
Nitrogen doped resorcinol (R) and formaldehyde (F) based polymeric gels were synthesised by polymerisation reaction. Nitrogen heteroatoms were incorporated in the bulk network of polymeric gels using melamine as nitrogen source. The resultant aerogels were carbonized at a temperature range 750 to 900 ºC under Ar to prepare nitrogen doped carbon aerogels used as the electroactive material for the fabrication of electrodes for electrochemical capacitor. The porous structure of carbon aerogels was characterised by nitrogen adsorption- desorption. Contact angle measurements were performed to investigate the wettability of the electrodes toward the electrolyte when used in the electrochemical cell. The electrochemical properties of the carbon aerogels were characterized by, cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) measurements. The experimental results revealed that resorcinol / catalyst (R/C) and resorcinol / melamine (R/M) ratios played crucial role in the development of porous structure (specific surface area, average pore size and pore size distribution) of the resultant carbons.
Nitrogen content played an important role to improve wetting behaviour and capacitive performance of the electroactive material. The carbon material MRFC-100-800-R/M80 with an R/C ratio of 100 and an R/M ratio of 80 carbonized at 800 ºC exhibited much improved wettability with 6 M KOH showing considerable decrease in the contact angle from 125º to 103º. Improved capacitance of 208 Fg-1 was achieved for N-doped carbon sample MRFC-100-800-R/M80 as compare to the specific capacitance of 136 Fg-1 for an un-doped carbon prepared under similar conditions.
Nitrogen content played an important role to improve wetting behaviour and capacitive performance of the electroactive material. The carbon material MRFC-100-800-R/M80 with an R/C ratio of 100 and an R/M ratio of 80 carbonized at 800 ºC exhibited much improved wettability with 6 M KOH showing considerable decrease in the contact angle from 125º to 103º. Improved capacitance of 208 Fg-1 was achieved for N-doped carbon sample MRFC-100-800-R/M80 as compare to the specific capacitance of 136 Fg-1 for an un-doped carbon prepared under similar conditions.
Original language | English |
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Title of host publication | Materials Science & Smart Materials (MSSM) |
Subtitle of host publication | Proceedings of the 5th International Conference on Materials Science and Smart Materials |
Editors | Abdul Ghani Olabi |
Place of Publication | Paisley |
Publisher | University of the West of Scotland |
Pages | 430-436 |
Number of pages | 7 |
ISBN (Print) | 9781903978634 |
Publication status | Published - 2018 |
Event | 5th International Conference on Material Science and Smart Materials - University of the West of Scotland, Paisley, United Kingdom Duration: 7 Aug 2018 → 10 Aug 2018 http://www.mssm2018.uws.ac.uk/ (Conference website.) http://www.mssm2018.uws.ac.uk/ |
Conference
Conference | 5th International Conference on Material Science and Smart Materials |
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Abbreviated title | MSSM 2018 |
Country/Territory | United Kingdom |
City | Paisley |
Period | 7/08/18 → 10/08/18 |
Internet address |
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Keywords
- Nitrogen doping
- Surface chemistry
- Capacitive performance
- Electrochemical characterisation