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Highly selective porous separator with thin skin layer for alkaline water electrolysis
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Sohee | - |
dc.contributor.author | Han, Jae Hee | - |
dc.contributor.author | Yuk, Jinok | - |
dc.contributor.author | Kim, Songmi | - |
dc.contributor.author | Song, Yuho | - |
dc.contributor.author | So, Soonyong | - |
dc.contributor.author | Lee, Kyu Tae | - |
dc.contributor.author | Kim, Tae-Ho | - |
dc.date.accessioned | 2023-03-20T08:43:12Z | - |
dc.date.available | 2023-03-20T08:43:12Z | - |
dc.date.created | 2022-04-18 | - |
dc.date.created | 2022-04-18 | - |
dc.date.created | 2022-04-18 | - |
dc.date.issued | 2022-03 | - |
dc.identifier.citation | Journal of Power Sources, Vol.524, p. 231059 | - |
dc.identifier.issn | 0378-7753 | - |
dc.identifier.uri | https://hdl.handle.net/10371/189462 | - |
dc.description.abstract | © 2022Advanced porous separators with thin selective skin layers to reduce the hydrogen permeation are developed for applications in alkaline water electrolysis. A thin skin layer based on crosslinked polyvinyl alcohol (cPVA) is fabricated on a porous substrate by a facile and scalable ultrasonic spray coating process. As the number of ultrasonic spraying cycles increases, the resulting separator demonstrates a decrease in the large-diameter pore fraction, an increase in the bubble-point pressure, and a reduction in the hydrogen permeability without a significant increase in the areal resistance. As a result, the optimized separator with a cPVA skin layer combines a low ionic resistance of 0.267 Ω cm2, a high bubble point pressure of 2.71 bar, and a low hydrogen permeability of 1.12 × 10−11 mol cm−2 s−1 bar−1. The electrolytic cell assembled with cPVAZ-30 achieves current densities of 861 mA cm−2 and 1890 mA cm−2 at 2.0 V and 2.6 V, respectively, in a 30 wt% KOH electrolyte solution at 80 °C. | - |
dc.language | 영어 | - |
dc.publisher | Elsevier BV | - |
dc.title | Highly selective porous separator with thin skin layer for alkaline water electrolysis | - |
dc.type | Article | - |
dc.identifier.doi | 10.1016/j.jpowsour.2022.231059 | - |
dc.citation.journaltitle | Journal of Power Sources | - |
dc.identifier.wosid | 000779916800001 | - |
dc.identifier.scopusid | 2-s2.0-85123844003 | - |
dc.citation.startpage | 231059 | - |
dc.citation.volume | 524 | - |
dc.description.isOpenAccess | Y | - |
dc.contributor.affiliatedAuthor | Lee, Kyu Tae | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.subject.keywordPlus | GAS-DIFFUSION LAYERS | - |
dc.subject.keywordPlus | MEMBRANE | - |
dc.subject.keywordPlus | ENERGY | - |
dc.subject.keywordPlus | POWER | - |
dc.subject.keywordPlus | STORAGE | - |
dc.subject.keywordAuthor | Alkaline water electrolysis | - |
dc.subject.keywordAuthor | Hydrogen permeability | - |
dc.subject.keywordAuthor | Porous separator | - |
dc.subject.keywordAuthor | Skin layer | - |
dc.subject.keywordAuthor | Ultrasonic spray coating | - |
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