Asymmetric Supercapacitors Based on Graphene/MnO2 Nanospheres and Graphene/MoO3 Nanosheets with High Energy Density
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Jian Chang | - |
dc.contributor.author | Meihua Jin | - |
dc.contributor.author | Fei Yao | - |
dc.contributor.author | Tae Hyung Kim | - |
dc.contributor.author | Viet Thong Le | - |
dc.contributor.author | Hongyan Yue | - |
dc.contributor.author | Fethullah Gunes | - |
dc.contributor.author | Bing Li | - |
dc.contributor.author | Arunabha Ghosh | - |
dc.contributor.author | Sishen Xie | - |
dc.contributor.author | Young Hee Lee | - |
dc.date.available | 2015-04-20T06:40:12Z | - |
dc.date.created | 2014-08-11 | - |
dc.date.issued | 2013-10 | - |
dc.identifier.issn | 1616-301X | - |
dc.identifier.uri | https://pr.ibs.re.kr/handle/8788114/1237 | - |
dc.description.abstract | Asymmetric supercapacitors with high energy density are fabricated using a self-assembled reduced graphene oxide (RGO)/MnO2 (GrMnO2) composite as a positive electrode and a RGO/MoO3 (GrMoO3) composite as a negative electrode in safe aqueous Na2SO4 electrolyte. The operation voltage is maximized by choosing two metal oxides with the largest work function difference. Because of the synergistic effects of highly conductive graphene and highly pseudocapacitive metal oxides, the hybrid nanostructure electrodes exhibit better charge transport and cycling stability. The operation voltage is expanded to 2.0 V in spite of the use of aqueous electrolyte, revealing a high energy density of 42.6 Wh kg-1 at a power density of 276 W kg-1 and a maximum specific capacitance of 307 F g-1, consequently giving rise to an excellent Ragone plot. In addition, the GrMnO2//GrMoO3 supercapacitor exhibits improved capacitance with cycling up to 1000 cycles, which is explained by the development of micropore structures during the repetition of ion transfer. This strategy for the choice of metal oxides provides a promising route for next-generation supercapacitors with high energy and high power densities. Asymmetric supercapacitors with high energy density are fabricated using self-assembled graphene/MnO2 as a positive electrode and graphene/MoO3 (GrMoO3) as a negative electrode in aqueous electrolyte. Choosing metal oxides with a large work function difference, the operating voltage is expanded to 2.0 V in spite of the use of the aqueous electrolyte, with a high energy density of 42.6 Wh kg-1 at a power density of 276 W kg-1 and a maximum capacitance of 307 F g -1. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. | - |
dc.description.uri | 1 | - |
dc.language | 영어 | - |
dc.publisher | WILEY-V C H VERLAG GMBH | - |
dc.subject | Graphene, asymmetric supercapacitors, metal oxide, work function, high operation voltage,high energy density | - |
dc.title | Asymmetric Supercapacitors Based on Graphene/MnO2 Nanospheres and Graphene/MoO3 Nanosheets with High Energy Density | - |
dc.type | Article | - |
dc.type.rims | ART | - |
dc.identifier.wosid | 000327479600010 | - |
dc.identifier.scopusid | 2-s2.0-84886391711 | - |
dc.identifier.rimsid | 470 | ko |
dc.date.tcdate | 2018-10-01 | - |
dc.contributor.affiliatedAuthor | Jian Chang | - |
dc.contributor.affiliatedAuthor | Meihua Jin | - |
dc.contributor.affiliatedAuthor | Fei Yao | - |
dc.contributor.affiliatedAuthor | Tae Hyung Kim | - |
dc.contributor.affiliatedAuthor | Viet Thong Le | - |
dc.contributor.affiliatedAuthor | Hongyan Yue | - |
dc.contributor.affiliatedAuthor | Fethullah Gunes | - |
dc.contributor.affiliatedAuthor | Bing Li | - |
dc.contributor.affiliatedAuthor | Arunabha Ghosh | - |
dc.contributor.affiliatedAuthor | Sishen Xie | - |
dc.contributor.affiliatedAuthor | Young Hee Lee | - |
dc.identifier.doi | 10.1002/adfm201301851 | - |
dc.identifier.bibliographicCitation | ADVANCED FUNCTIONAL MATERIALS, v.23, no.40, pp.5074 - 5083 | - |
dc.citation.title | ADVANCED FUNCTIONAL MATERIALS | - |
dc.citation.volume | 23 | - |
dc.citation.number | 40 | - |
dc.citation.startPage | 5074 | - |
dc.citation.endPage | 5083 | - |
dc.date.scptcdate | 2018-10-01 | - |
dc.description.wostc | 302 | - |
dc.description.scptc | 319 | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | ELECTROCHEMICAL CAPACITORS | - |
dc.subject.keywordPlus | THIN-FILM | - |
dc.subject.keywordPlus | AQUEOUS SUPERCAPACITOR | - |
dc.subject.keywordPlus | NANOSTRUCTURED MNO2 | - |
dc.subject.keywordPlus | ANODE MATERIAL | - |
dc.subject.keywordPlus | WORK FUNCTION | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | OXIDE | - |
dc.subject.keywordPlus | ELECTRODES | - |
dc.subject.keywordPlus | NANOWIRES | - |
dc.subject.keywordAuthor | graphene | - |
dc.subject.keywordAuthor | asymmetric supercapacitors | - |
dc.subject.keywordAuthor | metal oxides | - |
dc.subject.keywordAuthor | work functions | - |