DC Field | Value | Language |
---|---|---|
dc.contributor.author | Jo, Changshin | ko |
dc.contributor.author | An, Sunhyung | ko |
dc.contributor.author | Kim, Younghoon | ko |
dc.contributor.author | Shim, Jongmin | ko |
dc.contributor.author | Yoon, Songhun | ko |
dc.contributor.author | Lee, Jinwoo | ko |
dc.date.accessioned | 2018-08-20T08:24:37Z | - |
dc.date.available | 2018-08-20T08:24:37Z | - |
dc.date.created | 2018-08-08 | - |
dc.date.created | 2018-08-08 | - |
dc.date.issued | 2012 | - |
dc.identifier.citation | PHYSICAL CHEMISTRY CHEMICAL PHYSICS, v.14, no.16, pp.5695 - 5704 | - |
dc.identifier.issn | 1463-9076 | - |
dc.identifier.uri | http://hdl.handle.net/10203/245088 | - |
dc.description.abstract | Mesocellular carbon foam (MSU-F-C) is functionalized with hollow nanographite by a simple solution-phase method to enhance the intrapenetrating electrical percolation network. The electrical conductivity of the resulting material, denoted as MSU-F-C-G, is increased by a factor of 20.5 compared with the pristine MSU-F-C. Hollow graphite nanoparticles are well-dispersed in mesocellular carbon foam, as confirmed by transmission electron microscopy (TEM), and the d spacing of the (002) planes is 0.343 nm, which is only slightly larger than that of pure graphite (0.335 nm), suggesting a random combination of graphitic and turbostratic stacking. After nanographitic functionalization, the BET surface area and total pore volume decreased from 928 m(2) g(-1) and 1.5 cm(3) g(-1) to 394 m(2) g(-1) and 0.7 cm(3) g(-1), respectively. Thermogravimetric analysis in air shows that the thermal stability of MSU-F-C-G is improved relative to that of MSU-F-C, and the one-step weight loss indicates that the nanographite is homogeneously functionalized on the MSU-F-C particles. When the resulting mesocellular carbon materials are used as electrode materials for an electric double layer capacitor (EDLC), the specific capacitances (C-sp) of the MSU-F-C and MSU-F-C-G electrodes at 4 mV s(-1) are 109 F g(-1) and 93 F g(-1), respectively. The MSU-F-C-G electrode exhibited a very high area capacitance (C-area, 23.5 mu F cm(-2)) compared with that of the MSU-F-C electrode (11.7 mu F cm(-2)), which is attributed to the enhanced intraparticle conductivity by the nanographitic functionalization. MSU-F-C-G exhibited high capacity retention (52%) at a very high scan rate of 512 mV s(-1), while only a 23% capacity retention at 512 mV s(-1) was observed in the case of the MSU-F-C electrode. When applied as an anode in a lithium ion battery, a significant increase in the initial efficiency (44%), high reversible discharge capacity (580 mA h g(-1)) in the lower voltage region, and a higher rate capability were observed. The high rate capability of the MSU-F-C-G electrode as charge storage was due to the low resistance derived from the nanographitic functionalization. | - |
dc.language | English | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.subject | ORDERED MESOPOROUS CARBON | - |
dc.subject | LITHIUM-ION BATTERIES | - |
dc.subject | NANOSTRUCTURED MATERIALS | - |
dc.subject | MOLECULAR-SIEVES | - |
dc.subject | ANODE MATERIALS | - |
dc.subject | LOW-COST | - |
dc.subject | SILICA | - |
dc.subject | NANOPARTICLES | - |
dc.subject | NANOTUBES | - |
dc.subject | SUPERCAPACITORS | - |
dc.title | Nano-graphite functionalized mesocellular carbon foam with enhanced intra-penetrating electrical percolation networks for high performance electrochemical energy storage electrode materials | - |
dc.type | Article | - |
dc.identifier.wosid | 000302062200041 | - |
dc.identifier.scopusid | 2-s2.0-84859318073 | - |
dc.type.rims | ART | - |
dc.citation.volume | 14 | - |
dc.citation.issue | 16 | - |
dc.citation.beginningpage | 5695 | - |
dc.citation.endingpage | 5704 | - |
dc.citation.publicationname | PHYSICAL CHEMISTRY CHEMICAL PHYSICS | - |
dc.identifier.doi | 10.1039/c2cp40657h | - |
dc.contributor.localauthor | Lee, Jinwoo | - |
dc.contributor.nonIdAuthor | Jo, Changshin | - |
dc.contributor.nonIdAuthor | An, Sunhyung | - |
dc.contributor.nonIdAuthor | Kim, Younghoon | - |
dc.contributor.nonIdAuthor | Shim, Jongmin | - |
dc.contributor.nonIdAuthor | Yoon, Songhun | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | ORDERED MESOPOROUS CARBON | - |
dc.subject.keywordPlus | LITHIUM-ION BATTERIES | - |
dc.subject.keywordPlus | NANOSTRUCTURED MATERIALS | - |
dc.subject.keywordPlus | MOLECULAR-SIEVES | - |
dc.subject.keywordPlus | ANODE MATERIALS | - |
dc.subject.keywordPlus | LOW-COST | - |
dc.subject.keywordPlus | SILICA | - |
dc.subject.keywordPlus | NANOPARTICLES | - |
dc.subject.keywordPlus | NANOTUBES | - |
dc.subject.keywordPlus | SUPERCAPACITORS | - |
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