High Surface Area Carbon Nanofibers Derived from Electrospun Pim-1 for Energy Storage Applications
| dc.contributor.author | Bonso, Jeliza S. | en_US |
| dc.contributor.author | Kalaw, Grace Jones D. | en_US |
| dc.contributor.author | Ferraris, John P. | en_US |
| dc.contributor.utdAuthor | Bonso, Jeliza S. | en_US |
| dc.contributor.utdAuthor | Kalaw, Grace Jones D. | en_US |
| dc.contributor.utdAuthor | Ferraris, John P. | en_US |
| dc.date.accessioned | 2014-07-03T16:46:52Z | |
| dc.date.available | 2014-07-03T16:46:52Z | |
| dc.date.created | 2013-11-21 | en_US |
| dc.date.issued | 2013-11-21 | en_US |
| dc.date.submitted | 2013-09-20 | en_US |
| dc.description.abstract | Electrochemical double layer capacitors (EDLCs) utilize electrodes with high surface area to achieve high-energy storage capability. In this study, flexible and freestanding carbon nanofibers derived from PIM-1, a microporous polymer with high free volume, were prepared by pyrolysis of the electrospun polymer. A BET surface area of 546 m² g⁻¹ was obtained upon carbonization of the electrospun PIM-1 fibers. After further heat treatments such as steam-activation and annealing, the surface area increased to 1162 m² g⁻¹. These carbon fibers were directly used as electrodes without the use of binders in a coin cell (CR2032) configuration and were characterized by cyclic voltammetry, galvanostatic charge-discharge and electrochemical impedance spectroscopy. The activated and annealed fibers gave a specific capacitance of 120 F g⁻¹ at a scan rate of 10 mV s⁻¹ using 1,3-ethylmethylimidizaolium bis(trifluoromethanesulfonyl) imide as the ionic liquid electrolyte. From the galvanostatic charge-discharge test, the supercapacitor exhibited energy and power densities of 60 W h kg ⁻¹ (active material) and 1.7 kW kg⁻¹, respectively, at a current density of 1 A g⁻¹. High power application of this device was demonstrated by its 77% retention of the energy density (47 W h kg⁻¹) at a higher discharge current density of 5 A g⁻¹. | en_US |
| dc.identifier.bibliographicCitation | Bonso, J. S., G. D. Kalaw, and J. P. Ferraris. 2014. "High surface area carbon nanofibers derived from electrospun PIM-1 for energy storage applications." Journal of Materials Chemistry A 2014(2), doi:10.1039/c3ta13779a | en_US |
| dc.identifier.issn | 2050-7488 | en_US |
| dc.identifier.issue | 2 | en_US |
| dc.identifier.uri | http://hdl.handle.net/10735.1/3631 | |
| dc.identifier.volume | 2 | en_US |
| dc.language.iso | en | en_US |
| dc.relation.uri | http://dx.doi.org/10.1039/c3ta13779a | |
| dc.rights | ©2014 The Royal Society of Chemistry. This article may not be further made available or distributed. | en_US |
| dc.source | Journal of Materials Chemistry A | |
| dc.subject | Carbon fibers | en_US |
| dc.subject | Polymers | en_US |
| dc.subject | Electrospinning | en_US |
| dc.title | High Surface Area Carbon Nanofibers Derived from Electrospun Pim-1 for Energy Storage Applications | en_US |
| dc.type | Text | en_US |
| dc.type.genre | Article | en_US |