Full metadata record
DC Field | Value | Language |
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dc.contributor.author | Han, Dabin | - |
dc.contributor.author | Shanmugam, Sangaraju | - |
dc.date.accessioned | 2022-10-31T07:30:03Z | - |
dc.date.available | 2022-10-31T07:30:03Z | - |
dc.date.created | 2022-06-16 | - |
dc.date.issued | 2022-08 | - |
dc.identifier.issn | 0378-7753 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11750/16973 | - |
dc.description.abstract | Zinc-bromine redox flow batteries (Zn/Br2 RFBs) are gaining attention as a next-generation energy storage system with the advantages of a cost-effective redox couple material price, high output, and high energy density. However, bromine (Br2) crossover through a commercial porous membrane causes self-discharge to lower the capacity retention. Nafion, a commercial ion exchange membrane, can lower the crossover but has low voltage efficiency due to high membrane resistance. To address this trade-off, the amphoteric functionalized silica (Am-SiO2) is introduced into the Nafion membrane (Nafion/Am-SiO2). It suppresses the crossover of active materials such as Br2 and polybromide (Brn−) and possesses high ionic conductivity due to the quaternary ammonium and sulfonic groups on the Am-SiO2 surface. In addition, increasing the water content in the membrane prevents the expansion of the water cluster size, which could help balance bi-ionic transport. As a result, the composite membrane showed 83.3 and 19.0 times higher ion selectivity than the commercial porous membrane (SF600) and ion-exchange membrane (NRE-212). Compared to SF600 and NRE-212, the energy efficiency of Nafion/Am-SiO2 was improved by 4.2 and 6.4%, respectively. Balancing anion and cation transport can be successfully applied in Zn/Br2 RFBs by introducing an amphoteric group into an ion-exchange membrane. © 2022 Elsevier B.V. | - |
dc.language | English | - |
dc.publisher | Elsevier BV | - |
dc.title | Active material crossover suppression with bi-ionic transportability by an amphoteric membrane for Zinc–Bromine redox flow battery | - |
dc.type | Article | - |
dc.identifier.doi | 10.1016/j.jpowsour.2022.231637 | - |
dc.identifier.wosid | 000812353600002 | - |
dc.identifier.scopusid | 2-s2.0-85130604373 | - |
dc.identifier.bibliographicCitation | Journal of Power Sources, v.540 | - |
dc.description.isOpenAccess | FALSE | - |
dc.subject.keywordAuthor | Active materials crossover suppression | - |
dc.subject.keywordAuthor | Amphoteric membrane | - |
dc.subject.keywordAuthor | Bi-ionic transport | - |
dc.subject.keywordAuthor | High coulombic efficiency | - |
dc.subject.keywordAuthor | High ion conductivity | - |
dc.subject.keywordAuthor | Zinc-bromine redox flow battery | - |
dc.subject.keywordPlus | PROTON-EXCHANGE MEMBRANE | - |
dc.subject.keywordPlus | ENERGY-STORAGE SYSTEM | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | NAFION | - |
dc.subject.keywordPlus | CONDUCTIVITY | - |
dc.subject.keywordPlus | ELECTROLYTE | - |
dc.citation.title | Journal of Power Sources | - |
dc.citation.volume | 540 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry; Electrochemistry; Energy & Fuels; Materials Science | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary | - |
dc.type.docType | Article | - |
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