DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Yun-Jung | ko |
dc.contributor.author | Lee, Hongkyung | ko |
dc.contributor.author | Lee, Dong Jin | ko |
dc.contributor.author | Park, Jung-Ki | ko |
dc.contributor.author | Kim, Hee-Tak | ko |
dc.date.accessioned | 2016-04-15T03:13:34Z | - |
dc.date.available | 2016-04-15T03:13:34Z | - |
dc.date.created | 2015-09-21 | - |
dc.date.created | 2015-09-21 | - |
dc.date.created | 2015-09-21 | - |
dc.date.issued | 2015-08 | - |
dc.identifier.citation | CHEMSUSCHEM, v.8, no.15, pp.2496 - 2502 | - |
dc.identifier.issn | 1864-5631 | - |
dc.identifier.uri | http://hdl.handle.net/10203/204054 | - |
dc.description.abstract | The problem of high charge polarization is one of the most significant challenges in current nonaqueous Li-O-2 batteries. The development of an electrode for the oxygen evolution reaction (OER) at reduced overpotential is thus essential. Here, we suggest a binder- free electrode based on Co nanoparticles embedded in carbon nanofibers (Co-CNFs), which simultaneously reduces the charge and discharge polarization and extends cycling stability. Co-CNF gives rise to a lower discharge polarization because of an enhanced oxygen reduction reaction activity compared to Co-free CNF. Although the embedment of Co does not enhance the OER activity, it significantly reduces charge overvoltage by forming easily decomposable amorphous Li2O2. A mechanism for the formation of amorphous Li2O2 is suggested in terms of charge localization induced by the Co NPs. The findings suggest a new electrode design strategy of combining inexpensive metals and carbon materials for modulating the phase of the discharge product. | - |
dc.language | English | - |
dc.publisher | WILEY-V C H VERLAG GMBH | - |
dc.title | Reduction of Charge and Discharge Polarization by Cobalt Nanoparticles-Embedded Carbon Nanofibers for Li-O-2 Batteries | - |
dc.type | Article | - |
dc.identifier.wosid | 000360092400008 | - |
dc.identifier.scopusid | 2-s2.0-84939266487 | - |
dc.type.rims | ART | - |
dc.citation.volume | 8 | - |
dc.citation.issue | 15 | - |
dc.citation.beginningpage | 2496 | - |
dc.citation.endingpage | 2502 | - |
dc.citation.publicationname | CHEMSUSCHEM | - |
dc.identifier.doi | 10.1002/cssc.201500520 | - |
dc.contributor.localauthor | Park, Jung-Ki | - |
dc.contributor.localauthor | Kim, Hee-Tak | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | batteries | - |
dc.subject.keywordAuthor | charge transfer | - |
dc.subject.keywordAuthor | cobalt | - |
dc.subject.keywordAuthor | lithium peroxide | - |
dc.subject.keywordAuthor | overpotential | - |
dc.subject.keywordPlus | LITHIUM-OXYGEN BATTERIES | - |
dc.subject.keywordPlus | DIMETHYL-SULFOXIDE | - |
dc.subject.keywordPlus | AIR BATTERIES | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | CATHODE | - |
dc.subject.keywordPlus | LI2O2 | - |
dc.subject.keywordPlus | CHALLENGES | - |
dc.subject.keywordPlus | COMPOSITE | - |
dc.subject.keywordPlus | CATALYSTS | - |
dc.subject.keywordPlus | GRAPHENE | - |
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