DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Do Youb | ko |
dc.contributor.author | Kim, Mokwon | ko |
dc.contributor.author | Kim, Dong Wook | ko |
dc.contributor.author | Suk, Jungdon | ko |
dc.contributor.author | Park, O. Ok | ko |
dc.contributor.author | Kang, Yongku | ko |
dc.date.accessioned | 2016-04-15T02:56:41Z | - |
dc.date.available | 2016-04-15T02:56:41Z | - |
dc.date.created | 2015-09-21 | - |
dc.date.created | 2015-09-21 | - |
dc.date.issued | 2015-11 | - |
dc.identifier.citation | CARBON, v.93, pp.625 - 635 | - |
dc.identifier.issn | 0008-6223 | - |
dc.identifier.uri | http://hdl.handle.net/10203/203845 | - |
dc.description.abstract | In this study, free-standing porous graphene papers for high-capacity and reversible Li-O-2 battery cathodes are investigated. The graphene paper-like films were fabricated by the assembling of graphene nanoplatelets (GNPs) with the aid of graphene oxides (GOs) as a stabilizer, using a vacuum-assisted filtration method. By using GOs as a stabilizer, the GNP/GO films were fabricated with a paper-like form and they exhibited a highly wrinkled and disordered morphology. Moreover, the use of GNPs as a basic material eliminated the need for a post-annealing to recover the intrinsic electrical conductivity of graphene sheets. Subsequently, the GNP/GO paper could be directly used as a Li-O-2 battery cathode without any conducting additives and binders. The GNP/GO paper electrode showed a much higher discharge capacity in comparison to the reduced-GO paper and commercially available carbon papers. We also found that toroidal Li2O2 mainly nucleated and grew on discharge, and decomposed on charge with a relatively high O-2 evolution/consumption efficiency of 87%. However, a large number of Li2O2 particles grew inside the GNP/GO paper electrode, resulting in severe volume expansion of the electrode. This volume expansion could be the primary reason for the capacity fading on cycling. | - |
dc.language | English | - |
dc.publisher | PERGAMON-ELSEVIER SCIENCE LTD | - |
dc.subject | LITHIUM-OXYGEN BATTERIES | - |
dc.subject | ETHER-BASED ELECTROLYTE | - |
dc.subject | X-RAY PHOTOELECTRON | - |
dc.subject | AIR BATTERY | - |
dc.subject | LONG-LIFE | - |
dc.subject | LI/AIR BATTERIES | - |
dc.subject | POROUS GRAPHENE | - |
dc.subject | RATE CAPABILITY | - |
dc.subject | HIGH-CAPACITY | - |
dc.subject | OXIDE-FILMS | - |
dc.title | Flexible binder-free graphene paper cathodes for high-performance Li-O-2 batteries | - |
dc.type | Article | - |
dc.identifier.wosid | 000360292100064 | - |
dc.identifier.scopusid | 2-s2.0-84938604507 | - |
dc.type.rims | ART | - |
dc.citation.volume | 93 | - |
dc.citation.beginningpage | 625 | - |
dc.citation.endingpage | 635 | - |
dc.citation.publicationname | CARBON | - |
dc.identifier.doi | 10.1016/j.carbon.2015.05.097 | - |
dc.contributor.localauthor | Park, O. Ok | - |
dc.contributor.nonIdAuthor | Kim, Do Youb | - |
dc.contributor.nonIdAuthor | Kim, Dong Wook | - |
dc.contributor.nonIdAuthor | Suk, Jungdon | - |
dc.contributor.nonIdAuthor | Kang, Yongku | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | LITHIUM-OXYGEN BATTERIES | - |
dc.subject.keywordPlus | ETHER-BASED ELECTROLYTE | - |
dc.subject.keywordPlus | X-RAY PHOTOELECTRON | - |
dc.subject.keywordPlus | AIR BATTERY | - |
dc.subject.keywordPlus | LONG-LIFE | - |
dc.subject.keywordPlus | LI/AIR BATTERIES | - |
dc.subject.keywordPlus | POROUS GRAPHENE | - |
dc.subject.keywordPlus | RATE CAPABILITY | - |
dc.subject.keywordPlus | HIGH-CAPACITY | - |
dc.subject.keywordPlus | OXIDE-FILMS | - |
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