DC Field | Value | Language |
---|---|---|
dc.contributor.author | Choi, Bong-Gill | ko |
dc.contributor.author | Yang, Min-Ho | ko |
dc.contributor.author | Hong, Won-Hi | ko |
dc.contributor.author | Choi, Jang-Wook | ko |
dc.contributor.author | Huh, Yun-Suk | ko |
dc.date.accessioned | 2013-03-13T02:25:02Z | - |
dc.date.available | 2013-03-13T02:25:02Z | - |
dc.date.created | 2012-07-05 | - |
dc.date.created | 2012-07-05 | - |
dc.date.issued | 2012-05 | - |
dc.identifier.citation | ACS NANO, v.6, no.5, pp.4020 - 4028 | - |
dc.identifier.issn | 1936-0851 | - |
dc.identifier.uri | http://hdl.handle.net/10203/104238 | - |
dc.description.abstract | In order to develop energy storage devices with high power and energy densities, electrodes should hold well-defined pathways for efficient Ionic and electronic transport. Herein, we demonstrate high-performance supercapacitors by building a three-dimensional (3D) macroporous structure that consists of chemically modified graphene (CMG). These 3D macroporous electrodes, namely, embossed-CMG (e-CMG) films, were fabricated by using polystyrene colloidal particles as a sacrificial template. Furthermore, for further capacitance boost, a thin layer of MnO2 was additionally deposited onto e-CMG. The porous graphene structure with a large surface area facilitates fast ionic transport within the electrode while preserving decent electronic conductivity and thus endows MnO2/e-CMG composite electrodes with excellent electrochemical properties such as a specific capacitance of 389 F/g at 1 A/g and 97.7% capacitance retention upon a current Increase to 35 A/g. Moreover, when the MnO2/e-CMG composite electrode was asymmetrically assembled with an e-CMG electrode, the assembled full cell shows remarkable cell performance: energy density of 44 Wh/kg, power density of 25 kW/kg, and excellent cycle life. | - |
dc.language | English | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.subject | PERFORMANCE ELECTROCHEMICAL CAPACITORS | - |
dc.subject | OXIDE | - |
dc.subject | FILMS | - |
dc.subject | STORAGE | - |
dc.subject | ULTRACAPACITORS | - |
dc.subject | ELECTRODES | - |
dc.subject | NANOSHEETS | - |
dc.subject | MNO2 | - |
dc.title | 3D Macroporous Graphene Frameworks for Supercapacitors with High Energy and Power Densities | - |
dc.type | Article | - |
dc.identifier.wosid | 000304231700041 | - |
dc.identifier.scopusid | 2-s2.0-84862894222 | - |
dc.type.rims | ART | - |
dc.citation.volume | 6 | - |
dc.citation.issue | 5 | - |
dc.citation.beginningpage | 4020 | - |
dc.citation.endingpage | 4028 | - |
dc.citation.publicationname | ACS NANO | - |
dc.identifier.doi | 10.1021/nn3003345 | - |
dc.embargo.liftdate | 9999-12-31 | - |
dc.embargo.terms | 9999-12-31 | - |
dc.contributor.localauthor | Hong, Won-Hi | - |
dc.contributor.localauthor | Choi, Jang-Wook | - |
dc.contributor.nonIdAuthor | Yang, Min-Ho | - |
dc.contributor.nonIdAuthor | Huh, Yun-Suk | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | porous material | - |
dc.subject.keywordAuthor | graphene | - |
dc.subject.keywordAuthor | composites | - |
dc.subject.keywordAuthor | ion transport | - |
dc.subject.keywordAuthor | energy storage | - |
dc.subject.keywordPlus | PERFORMANCE ELECTROCHEMICAL CAPACITORS | - |
dc.subject.keywordPlus | OXIDE | - |
dc.subject.keywordPlus | FILMS | - |
dc.subject.keywordPlus | STORAGE | - |
dc.subject.keywordPlus | ULTRACAPACITORS | - |
dc.subject.keywordPlus | ELECTRODES | - |
dc.subject.keywordPlus | NANOSHEETS | - |
dc.subject.keywordPlus | MNO2 | - |
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