Effect of Compression Pressure on the Physical and Electrochemical Properties of Activated Carbon Monoliths Electrodes for Supercapacitor Application
| Periodical | Advanced Materials Research (Volume 501) |
|---|---|
| Main Theme | Solid State Science and Technology XXVI |
| Edited by | R. Abd-Shukor, R. Awang, M. Deraman, M. M. Kamisah & R. Shamsudin |
| Pages | 13-18 |
| DOI | 10.4028/www.scientific.net/AMR.501.13 |
| Citation | Awitdrus Awitdrus et al., 2012, Advanced Materials Research, 501, 13 |
| Online since | April, 2012 |
| Authors | Awitdrus Awitdrus, Mohamad Deraman, Ibrahim Abu Talib, Rakhmawati Farma, Ramli Omar, M.M. Ishak, N.H. Basri, B.N.M. Dolah |
| Keywords | Activated Carbon Monolith Electrodes, Compression Pressure, Specific Capacitance, Specific Energy, Specific Power, Supercapacitor (SC) |
| Price | US$ 28,- |
Green Monoliths (GMs) of self-adhesive carbon grain from fibers of oil palm empty fruit bunches were prepared by compression pressure at 1.43 × 107, 1.91 × 107 and 2.39 × 107 kg/m2, respectively. Activated carbon monoliths ACM-A, ACM-B and ACM-C prepared by CO2 activation from these GMs, respectively, were used as electrodes in supercapacitor cells which employed stainless steel 316L current collector and H2SO4 electrolyte. Evaluation of the electrochemical properties showed that ACM-A, ACM-B and ACM-C cells had specific capacitance of 30, 9 and 5 F/g, total ESR of 3.21, 4.95 and 7.33 Ω, specific power (maximum) of 173.41, 107.58 and 33.82 W/kg, and specific energy (maximum) of 0.67, 0.15 and 0.09 Wh/kg. These properties are directly associated with the surface area of the ACMs, i.e. 419, 336 and 302 m2/g for the ACM-A, ACM-B and ACM-C, respectively, indicating a direct effect of compression pressure on the physical and electrochemical properties of ACMs electrodes.
