Influence of the Porous Transport Layer Surface Structure on Overpotentials in PEM Water Electrolysis.
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| Title: | Influence of the Porous Transport Layer Surface Structure on Overpotentials in PEM Water Electrolysis. |
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| Authors: | Yang, Shufeng1 (AUTHOR) yangshufeng@hnu.edu.cn, Hou, Bin1 (AUTHOR), Xie, Zhiqiang1 (AUTHOR) zxie@hnu.edu.cn, Yang, Gaoqiang1 (AUTHOR) |
| Source: | Energies (19961073). Aug2025, Vol. 18 Issue 16, p4396. 11p. |
| Subjects: | Overpotential, Surface structure, Catalysts, Water electrolysis, Chemical kinetics, Electric conductivity, Porous materials, Mass transfer |
| Abstract: | The engineering of porous transport layer (PTL)–catalyst layer (CL) interfacial architecture plays a critical role in optimizing the performance of proton exchange membrane water electrolyzers (PEMWEs). Particularly, at the PTL-CL interface, our results reveal that anode catalyst loadings affect the modulation of the PTL surface structure on the overpotentials of PEMWEs. Under high anode catalyst loadings, the magnitude of overpotentials is predominantly governed by the electronic conductivity and mass transport resistance within the CL, where the modifying effects of PTL-CL interfacial contact characteristics become negligible. However, when the catalyst loading is reduced, the PTL-CL interfacial contact characteristics become critical for electron conduction, mass transport, and kinetic reaction. Under low catalyst loadings, the etched PTL demonstrates a maximum reduction of 59 mV compared to the pristine PTL at 4 A/cm2, with the former exhibiting a 10 mΩ·cm2 reduction. Meanwhile, the etched PTL integrated with a cell demonstrates superior performance in both mass transport and kinetic overpotentials compared to a pristine PTL. This clearly indicates that the surface structure of the PTL plays an increasingly significant role in regulating the overpotentials of PEMWEs as the catalyst loadings decrease. [ABSTRACT FROM AUTHOR] |
| Copyright of Energies (19961073) 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 |
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| Header | DbId: egs DbLabel: Engineering Source An: 187555106 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Influence of the Porous Transport Layer Surface Structure on Overpotentials in PEM Water Electrolysis. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Yang%2C+Shufeng%22">Yang, Shufeng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> yangshufeng@hnu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Hou%2C+Bin%22">Hou, Bin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xie%2C+Zhiqiang%22">Xie, Zhiqiang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> zxie@hnu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Yang%2C+Gaoqiang%22">Yang, Gaoqiang</searchLink><relatesTo>1</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Energies+%2819961073%29%22">Energies (19961073)</searchLink>. Aug2025, Vol. 18 Issue 16, p4396. 11p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Overpotential%22">Overpotential</searchLink><br /><searchLink fieldCode="DE" term="%22Surface+structure%22">Surface structure</searchLink><br /><searchLink fieldCode="DE" term="%22Catalysts%22">Catalysts</searchLink><br /><searchLink fieldCode="DE" term="%22Water+electrolysis%22">Water electrolysis</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+kinetics%22">Chemical kinetics</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+conductivity%22">Electric conductivity</searchLink><br /><searchLink fieldCode="DE" term="%22Porous+materials%22">Porous materials</searchLink><br /><searchLink fieldCode="DE" term="%22Mass+transfer%22">Mass transfer</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The engineering of porous transport layer (PTL)–catalyst layer (CL) interfacial architecture plays a critical role in optimizing the performance of proton exchange membrane water electrolyzers (PEMWEs). Particularly, at the PTL-CL interface, our results reveal that anode catalyst loadings affect the modulation of the PTL surface structure on the overpotentials of PEMWEs. Under high anode catalyst loadings, the magnitude of overpotentials is predominantly governed by the electronic conductivity and mass transport resistance within the CL, where the modifying effects of PTL-CL interfacial contact characteristics become negligible. However, when the catalyst loading is reduced, the PTL-CL interfacial contact characteristics become critical for electron conduction, mass transport, and kinetic reaction. Under low catalyst loadings, the etched PTL demonstrates a maximum reduction of 59 mV compared to the pristine PTL at 4 A/cm2, with the former exhibiting a 10 mΩ·cm2 reduction. Meanwhile, the etched PTL integrated with a cell demonstrates superior performance in both mass transport and kinetic overpotentials compared to a pristine PTL. This clearly indicates that the surface structure of the PTL plays an increasingly significant role in regulating the overpotentials of PEMWEs as the catalyst loadings decrease. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Energies (19961073) 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.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.3390/en18164396 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 11 StartPage: 4396 Subjects: – SubjectFull: Overpotential Type: general – SubjectFull: Surface structure Type: general – SubjectFull: Catalysts Type: general – SubjectFull: Water electrolysis Type: general – SubjectFull: Chemical kinetics Type: general – SubjectFull: Electric conductivity Type: general – SubjectFull: Porous materials Type: general – SubjectFull: Mass transfer Type: general Titles: – TitleFull: Influence of the Porous Transport Layer Surface Structure on Overpotentials in PEM Water Electrolysis. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Yang, Shufeng – PersonEntity: Name: NameFull: Hou, Bin – PersonEntity: Name: NameFull: Xie, Zhiqiang – PersonEntity: Name: NameFull: Yang, Gaoqiang IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 08 Text: Aug2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 19961073 Numbering: – Type: volume Value: 18 – Type: issue Value: 16 Titles: – TitleFull: Energies (19961073) Type: main |
| ResultId | 1 |
