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Rate Capability of Electric Double-Layer Capacitor (EDLC) Electrodes According to Pore Length in Spherical Porous Carbons
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Ka, Bok H. | - |
dc.contributor.author | Yoon, Songhun | - |
dc.contributor.author | Oh, Seung M. | - |
dc.date.accessioned | 2009-07-30T05:57:41Z | - |
dc.date.available | 2009-07-30T05:57:41Z | - |
dc.date.issued | 2007 | - |
dc.identifier.citation | J. Korean Electrochem. Soc., 10, 252 (2007) | en |
dc.identifier.issn | 1229-1935 | - |
dc.identifier.uri | http://uci.or.kr/G100:I100-KOI(KISTI1.1003/JNL.JAKO200706414126449) | - |
dc.identifier.uri | https://hdl.handle.net/10371/5979 | - |
dc.description.abstract | A series of spherical porous carbons were prepared via resorcinol-formaldehyde (RF) sol-gel polymerization in the presence of cationic surfactant (CTAB, cetyltrimethylammonium bromide), wherein the carbon sphere size was controlled by varying the CTAB introduction time after a pre-determined period of addition reaction (termed as "pre-curing"). The sphere size gradually decreases with an increase in the pre-curing time within the range of 30-150 nm. The carbons possess two types of pores; one inside carbon spheres (intra-particle pores) and the other at the interstitial sites made by carbon spheres (inter-particle pores). Of the two, the surface exposed on the former was dominant to determine the electric double-layer capacitor (EDLC) performance of porous carbons. As the intra-particle pores were generated inside RF gel spheres by gasification, the pore diameter was similar for all these carbons, thereby the pore length turned out to be a decisive factor controlling the EDLC performance. The charge-discharge voltage profiles and complex capacitance analysis consistently illustrate that the smaller-sized RF carbons deliver a better rate capability, which must be the direct result of facilitated ion penetration into shorter pores. | en |
dc.description.sponsorship | via Research Center for Energy Conversion and Storage, and by the Division of Advanced Batteries in NGE Program(Project No. 10016439). | en |
dc.language.iso | en | - |
dc.publisher | 한국전기화학회 = The Korean Electrochemical Society (KECS) | en |
dc.subject | Electric double-layer capacitors | en |
dc.subject | Resorcinol-formaldehyde polymerization | en |
dc.subject | Complex capacitance analysis | en |
dc.subject | Porous carbons | en |
dc.subject | Surfactants | en |
dc.title | Rate Capability of Electric Double-Layer Capacitor (EDLC) Electrodes According to Pore Length in Spherical Porous Carbons | en |
dc.type | Article | en |
dc.contributor.AlternativeAuthor | 가복현 | - |
dc.contributor.AlternativeAuthor | 윤성훈 | - |
dc.contributor.AlternativeAuthor | 오승모 | - |
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