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DC Field | Value | Language |
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dc.citation.endPage | 3720 | - |
dc.citation.number | 10 | - |
dc.citation.startPage | 3711 | - |
dc.citation.title | JOURNAL OF MATERIALS CHEMISTRY A | - |
dc.citation.volume | 4 | - |
dc.contributor.author | Kim, Hyun-Woo | - |
dc.contributor.author | Lim, Jun-Muk | - |
dc.contributor.author | Lee, Hyeon-Ji | - |
dc.contributor.author | Eom, Seung-Wook | - |
dc.contributor.author | Hong, Young Taik | - |
dc.contributor.author | Lee, Sang-Young | - |
dc.date.accessioned | 2023-12-22T00:07:34Z | - |
dc.date.available | 2023-12-22T00:07:34Z | - |
dc.date.created | 2016-04-08 | - |
dc.date.issued | 2016-03 | - |
dc.description.abstract | Zinc (Zn)-air batteries have recently attracted a great deal of attention as a promising energy storage system to fulfill our ever-increasing demand for higher energy density power sources. Despite commercial success of primary Zn-air batteries, performances of rechargeable Zn-air batteries are still far below practically satisfactory levels. Among critical challenges facing the electrochemical rechargeability, the crossover of zincate (Zn(OH)(4)(2-)) ions from the Zn anode to the air cathode (via separator membranes) is a formidable bottleneck. Here, as a facile and scalable polymer architecture strategy to address this ion transport issue, we demonstrate a new class of polymer blend electrolyte membranes with artificially engineered, bicontinuous anion-conducting/-repelling phases (referred to as "PBE membranes"). As an anion-conducting continuous phase, an electrospun polyvinyl alcohol (PVA)/polyacrylic acid (PAA) nanofiber mat is fabricated. Into the PVA/PAA nanofiber mat, Nafion bearing pendant sulfonate groups is impregnated to form an anion-repelling continuous phase. Such bicontinuous phase-mediated structural uniqueness enables the PBE membrane to act as a selective ion transport channel, i.e., effectively suppresses Zn(OH)(4)(2-) crossover (by a continuous Nafion phase offering the Donnan exclusion effect) with slightly impairing OH- conduction (predominantly through the PVA/PAA nanofiber mat), eventually improving the cycling stability (cycle time = over 2500 min for the PBE membrane vs. 900 min for a conventional polypropylene separator). The PBE membrane featuring the selective transport of OH- and Zn(OH)(4)(2-) ions is anticipated to pave a new route that leads us closer toward rechargeable Zn-air batteries | - |
dc.identifier.bibliographicCitation | JOURNAL OF MATERIALS CHEMISTRY A, v.4, no.10, pp.3711 - 3720 | - |
dc.identifier.doi | 10.1039/c5ta09576j | - |
dc.identifier.issn | 2050-7488 | - |
dc.identifier.scopusid | 2-s2.0-84959490914 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/18938 | - |
dc.identifier.url | http://pubs.rsc.org/en/Content/ArticleLanding/2016/TA/C5TA09576J#!divAbstract | - |
dc.identifier.wosid | 000371967000015 | - |
dc.language | 영어 | - |
dc.publisher | ROYAL SOC CHEMISTRYROYAL SOC CHEMISTRY | - |
dc.title | Artificially engineered, bicontinuous anion-conducting/-repelling polymeric phases as a selective ion transport channel for rechargeable zinc-air battery separator membranes | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary | - |
dc.relation.journalResearchArea | Chemistry; Energy & Fuels; Materials Science | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | FLOWER-LIKE ZNO | - |
dc.subject.keywordPlus | FUEL-CELLS | - |
dc.subject.keywordPlus | ELECTROLYTE MEMBRANES | - |
dc.subject.keywordPlus | EXCHANGE MEMBRANE | - |
dc.subject.keywordPlus | POLYVINYL-ALCOHOL | - |
dc.subject.keywordPlus | CATHODE CATALYSTS | - |
dc.subject.keywordPlus | LI-AIR | - |
dc.subject.keywordPlus | PERMEABILITY | - |
dc.subject.keywordPlus | EXCLUSION | - |
dc.subject.keywordPlus | SUBSTRATE | - |
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