DC Field | Value | Language |
---|---|---|
dc.contributor.author | Jung, HyunJin | ko |
dc.contributor.author | Lee, JaeHyuk | ko |
dc.contributor.author | Park, JaeYun | ko |
dc.contributor.author | Shin, Kyungjae | ko |
dc.contributor.author | Kim, Hee-Tak | ko |
dc.contributor.author | Cho, EunAe | ko |
dc.date.accessioned | 2023-07-28T05:00:11Z | - |
dc.date.available | 2023-07-28T05:00:11Z | - |
dc.date.created | 2023-04-17 | - |
dc.date.issued | 2023-07 | - |
dc.identifier.citation | SMALL, v.19, no.30 | - |
dc.identifier.issn | 1613-6810 | - |
dc.identifier.uri | http://hdl.handle.net/10203/310938 | - |
dc.description.abstract | High electrochemical polarization during a redox reaction in the electrode of aqueous zinc-bromine flow batteries largely limits its practical implementation as an effective energy storage system. This study demonstrates a rationally-designed composite electrode that exhibits a lower electrochemical polarization by providing a higher number of catalytically-active sites for faster bromine reaction, compared to a conventional graphite felt cathode. The composite electrode is composed of electrically-conductive graphite felt (GF) and highly active mesoporous tungsten oxynitride nanofibers (mWONNFs) that are prepared by electrospinning and simple heat treatments. Addition of the 1D mWONNFs to porous GF produces a web-like structure that significantly facilitates the reaction kinetics and ion diffusion. The cell performance achieves in this study demonstrated high energy efficiencies of 89% and 80% at current densities of 20 and 80 mA cm(-2), respectively. Furthermore, the cell can also be operated at a very high current density of 160 mA cm(-2), demonstrating an energy efficiency of 62%. These results demonstrate the effectiveness of the mWONNF/GF composite as the electrode material in zinc-bromine flow batteries. | - |
dc.language | English | - |
dc.publisher | WILEY-V C H VERLAG GMBH | - |
dc.title | A Mesoporous Tungsten Oxynitride Nanofibers/Graphite Felt Composite Electrode with High Catalytic Activity for the Cathode in Zn-Br Flow Battery | - |
dc.type | Article | - |
dc.identifier.wosid | 000956490900001 | - |
dc.identifier.scopusid | 2-s2.0-85150999295 | - |
dc.type.rims | ART | - |
dc.citation.volume | 19 | - |
dc.citation.issue | 30 | - |
dc.citation.publicationname | SMALL | - |
dc.identifier.doi | 10.1002/smll.202208280 | - |
dc.contributor.localauthor | Kim, Hee-Tak | - |
dc.contributor.localauthor | Cho, EunAe | - |
dc.contributor.nonIdAuthor | Jung, HyunJin | - |
dc.contributor.nonIdAuthor | Lee, JaeHyuk | - |
dc.contributor.nonIdAuthor | Park, JaeYun | - |
dc.contributor.nonIdAuthor | Shin, Kyungjae | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | density functional theory (DFT) calculations | - |
dc.subject.keywordAuthor | high catalytic activity | - |
dc.subject.keywordAuthor | mesoporous tungsten oxynitride nanofibers | - |
dc.subject.keywordAuthor | synergetic interconnected composite | - |
dc.subject.keywordAuthor | zinc bromine flow batteries | - |
dc.subject.keywordPlus | OXYGEN-REDUCTION | - |
dc.subject.keywordPlus | RECENT PROGRESS | - |
dc.subject.keywordPlus | REDOX COUPLE | - |
dc.subject.keywordPlus | NANOTUBES | - |
dc.subject.keywordPlus | OXIDE | - |
dc.subject.keywordPlus | NANOPARTICLES | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | NANOWIRES | - |
dc.subject.keywordPlus | CARBON | - |
dc.subject.keywordPlus | AREA | - |
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