The Influence of the Flow Direction of KOH Solutions on the Measurement of Dissolved Hydrogen Permeability Through Alkaline Water Electrolysis Membranes.
Saved in:
| Title: | The Influence of the Flow Direction of KOH Solutions on the Measurement of Dissolved Hydrogen Permeability Through Alkaline Water Electrolysis Membranes. |
|---|---|
| Authors: | Lim, Jun Hyun1 (AUTHOR), Hwang, Jin Pyo1 (AUTHOR), Oh, Euntaek1 (AUTHOR), Joo, Jinho1 (AUTHOR), Hou, Jian1 (AUTHOR), Lee, Chang Hyun1 (AUTHOR) chlee@dankook.ac.kr |
| Source: | Polymers (20734360). Apr2026, Vol. 18 Issue 8, p1006. 13p. |
| Subjects: | Water electrolysis, Test methods, Gas leakage, Ion flow dynamics, Ion-permeable membranes, Artificial membranes, Flow measurement |
| Abstract: | Alkaline water electrolysis (AWE) is a pivotal technology for sustainable hydrogen production. However, hydrogen permeation through its membranes remains a critical concern, as excessive gas crossover can lead to the formation of explosive mixtures and pose severe safety hazards. While conventional measurement techniques, such as pressure drop and electrochemical methods, are suitable for porous membranes, they exhibit inherent limitations when applied to dense membranes such as anion exchange membranes. This study proposes a cross-flow measurement methodology applicable to all types of AWE membranes. Unlike traditional dead-end configurations, the cross-flow approach effectively mitigates impurity accumulation and maintains a continuous electrolyte flow parallel to the membrane surface. This configuration ensures uniform electrolyte distribution, minimizes local concentration and pressure fluctuations, and enhances measurement reliability and reproducibility relative to the conventional dead-end flow. Furthermore, the methodology ensures accurate and reproducible measurements, demonstrating enhanced detection capability for dense membranes with intrinsically low permeability by mitigating fouling and concentration polarization effects. These findings provide a robust framework for the development of high-performance membranes designed to suppress dissolved hydrogen permeability. [ABSTRACT FROM AUTHOR] |
| Copyright of Polymers (20734360) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
|
Full text is not displayed to guests.
Login for full access.
|
|
| FullText | Links: – Type: pdflink Text: Availability: 1 |
|---|---|
| Header | DbId: egs DbLabel: Engineering Source An: 193439582 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
| IllustrationInfo | |
| Items | – Name: Title Label: Title Group: Ti Data: The Influence of the Flow Direction of KOH Solutions on the Measurement of Dissolved Hydrogen Permeability Through Alkaline Water Electrolysis Membranes. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Lim%2C+Jun+Hyun%22">Lim, Jun Hyun</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hwang%2C+Jin+Pyo%22">Hwang, Jin Pyo</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Oh%2C+Euntaek%22">Oh, Euntaek</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Joo%2C+Jinho%22">Joo, Jinho</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hou%2C+Jian%22">Hou, Jian</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lee%2C+Chang+Hyun%22">Lee, Chang Hyun</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> chlee@dankook.ac.kr</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Polymers+%2820734360%29%22">Polymers (20734360)</searchLink>. Apr2026, Vol. 18 Issue 8, p1006. 13p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Water+electrolysis%22">Water electrolysis</searchLink><br /><searchLink fieldCode="DE" term="%22Test+methods%22">Test methods</searchLink><br /><searchLink fieldCode="DE" term="%22Gas+leakage%22">Gas leakage</searchLink><br /><searchLink fieldCode="DE" term="%22Ion+flow+dynamics%22">Ion flow dynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Ion-permeable+membranes%22">Ion-permeable membranes</searchLink><br /><searchLink fieldCode="DE" term="%22Artificial+membranes%22">Artificial membranes</searchLink><br /><searchLink fieldCode="DE" term="%22Flow+measurement%22">Flow measurement</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Alkaline water electrolysis (AWE) is a pivotal technology for sustainable hydrogen production. However, hydrogen permeation through its membranes remains a critical concern, as excessive gas crossover can lead to the formation of explosive mixtures and pose severe safety hazards. While conventional measurement techniques, such as pressure drop and electrochemical methods, are suitable for porous membranes, they exhibit inherent limitations when applied to dense membranes such as anion exchange membranes. This study proposes a cross-flow measurement methodology applicable to all types of AWE membranes. Unlike traditional dead-end configurations, the cross-flow approach effectively mitigates impurity accumulation and maintains a continuous electrolyte flow parallel to the membrane surface. This configuration ensures uniform electrolyte distribution, minimizes local concentration and pressure fluctuations, and enhances measurement reliability and reproducibility relative to the conventional dead-end flow. Furthermore, the methodology ensures accurate and reproducible measurements, demonstrating enhanced detection capability for dense membranes with intrinsically low permeability by mitigating fouling and concentration polarization effects. These findings provide a robust framework for the development of high-performance membranes designed to suppress dissolved hydrogen permeability. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Polymers (20734360) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=193439582 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.3390/polym18081006 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 13 StartPage: 1006 Subjects: – SubjectFull: Water electrolysis Type: general – SubjectFull: Test methods Type: general – SubjectFull: Gas leakage Type: general – SubjectFull: Ion flow dynamics Type: general – SubjectFull: Ion-permeable membranes Type: general – SubjectFull: Artificial membranes Type: general – SubjectFull: Flow measurement Type: general Titles: – TitleFull: The Influence of the Flow Direction of KOH Solutions on the Measurement of Dissolved Hydrogen Permeability Through Alkaline Water Electrolysis Membranes. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Lim, Jun Hyun – PersonEntity: Name: NameFull: Hwang, Jin Pyo – PersonEntity: Name: NameFull: Oh, Euntaek – PersonEntity: Name: NameFull: Joo, Jinho – PersonEntity: Name: NameFull: Hou, Jian – PersonEntity: Name: NameFull: Lee, Chang Hyun IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 04 Text: Apr2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 20734360 Numbering: – Type: volume Value: 18 – Type: issue Value: 8 Titles: – TitleFull: Polymers (20734360) Type: main |
| ResultId | 1 |
