DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lee, Gyu Heon | ko |
dc.contributor.author | Lee, Jung Woo | ko |
dc.contributor.author | Choi, Ji Il | ko |
dc.contributor.author | Kim, Sang Jun | ko |
dc.contributor.author | Kim, Yong-Hoon | ko |
dc.contributor.author | Kang, Jeung Ku | ko |
dc.date.accessioned | 2016-10-04T08:59:05Z | - |
dc.date.available | 2016-10-04T08:59:05Z | - |
dc.date.created | 2016-09-21 | - |
dc.date.created | 2016-09-21 | - |
dc.date.created | 2016-09-21 | - |
dc.date.created | 2016-09-21 | - |
dc.date.created | 2016-09-21 | - |
dc.date.issued | 2016-07 | - |
dc.identifier.citation | ADVANCED FUNCTIONAL MATERIALS, v.26, no.28, pp.5139 - 5148 | - |
dc.identifier.issn | 1616-301X | - |
dc.identifier.uri | http://hdl.handle.net/10203/213180 | - |
dc.description.abstract | A hierarchical architecture fabricated by integrating ultrafine titanium dioxide (TiO2) nanocrystals with the binder-free macroporous graphene (PG) network foam for high-performance energy storage is demonstrated, where mesoporous open channels connected to the PG facilitate rapid ionic transfer during the Li-ion insertion/extraction process. Moreover, the binder-free conductive PG network in direct contact with a current collector provides ultrafast electronic transfer. This structure leads to unprecedented cycle stability, with the capacity preserved with nearly 100% Coulombic efficiency over 10 000 Li-ion insertion/extraction cycles. Moreover, it is proven to be very stable while cycling 10 to 100-fold longer compared to typical electrode structures for batteries. This facilitates ultrafast charge/discharge rate capability even at a high current rate giving a very short charge/discharge time of 40 s. Density functional theory calculations also clarify that Li ions migrate into the TiO2-PG interface then stabilizing its binder-free interface and that the Li ion diffusion occurs via a concerted mechanism, thus resulting in the ultrafast discharge/charge rate capability of the Li ions into ultrafine nanocrystals | - |
dc.language | English | - |
dc.publisher | WILEY-V C H VERLAG GMBH | - |
dc.title | Ultrafast Discharge/Charge Rate and Robust Cycle Life for High-Performance Energy Storage Using Ultrafine Nanocrystals on the Binder-Free Porous Graphene Foam | - |
dc.type | Article | - |
dc.identifier.wosid | 000380890200016 | - |
dc.identifier.scopusid | 2-s2.0-84979276910 | - |
dc.type.rims | ART | - |
dc.citation.volume | 26 | - |
dc.citation.issue | 28 | - |
dc.citation.beginningpage | 5139 | - |
dc.citation.endingpage | 5148 | - |
dc.citation.publicationname | ADVANCED FUNCTIONAL MATERIALS | - |
dc.identifier.doi | 10.1002/adfm.201601355 | - |
dc.contributor.localauthor | Kim, Yong-Hoon | - |
dc.contributor.localauthor | Kang, Jeung Ku | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | LITHIUM-ION BATTERIES | - |
dc.subject.keywordPlus | CHEMICAL-REDUCTION | - |
dc.subject.keywordPlus | TIO2 ANATASE | - |
dc.subject.keywordPlus | ANODE | - |
dc.subject.keywordPlus | OXIDE | - |
dc.subject.keywordPlus | FABRICATION | - |
dc.subject.keywordPlus | CHALLENGES | - |
dc.subject.keywordPlus | ELECTRODES | - |
dc.subject.keywordPlus | NANOTUBES | - |
dc.subject.keywordPlus | CAPACITY | - |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.