Lin, Rui und Lu, Jiapeng und Liu, Shengchu und Hua, Shiyang und Cai, Shin und Friedrich, Kaspar Andreas (2024) Revelation of ink solvents influence mechanism in catalyst layer of proton exchange membrane fuel cells. Applied Surface Science, 655, Seite 159608. Elsevier. doi: 10.1016/j.apsusc.2024.159608. ISSN 0169-4332.
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Offizielle URL: https://www.sciencedirect.com/science/article/pii/S0169433224003210?pes=vor&utm_source=scopus&getft_integrator=scopus
Kurzfassung
The optimal catalyst layer microstructure is vital for the commercialization of proton exchange membrane fuel cells. Understanding catalyst ink is crucial for achieving this microstructure. This study investigates the effect of solvents on ionomer behavior to establish the relationship between catalyst ink and fuel cell performance. Molecular dynamics simulation results show that the water and n-propanol mixture (NPA-aq) solvent has a stronger binding interaction with the Pt surface compared to other solvents. NPA-aq solvent weakens ionomer adsorption on the Pt surface and creates a porous proton conduction network. The NPA-aq MEA exhibits lower mass transfer resistance than the Water MEA and EG-aq MEA. However, the results of dynamic light scattering show that NPA-aq ink particles aggregate and grow up over time, leading to an increase in the coverage degree of ionomer on Pt surface and reducing electrochemical active surface area. This work provides mechanistic analysis for the solvent selection of the ink with a targeted ionomer control, which is helpful to reduce the mass transfer loss and accelerate the commercialization of fuel cells.
elib-URL des Eintrags: | https://elib.dlr.de/212378/ | ||||||||||||||||||||||||||||
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Dokumentart: | Zeitschriftenbeitrag | ||||||||||||||||||||||||||||
Titel: | Revelation of ink solvents influence mechanism in catalyst layer of proton exchange membrane fuel cells | ||||||||||||||||||||||||||||
Autoren: |
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Datum: | 5 Februar 2024 | ||||||||||||||||||||||||||||
Erschienen in: | Applied Surface Science | ||||||||||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||||||||||
Open Access: | Nein | ||||||||||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||||||||||
In SCOPUS: | Ja | ||||||||||||||||||||||||||||
In ISI Web of Science: | Ja | ||||||||||||||||||||||||||||
Band: | 655 | ||||||||||||||||||||||||||||
DOI: | 10.1016/j.apsusc.2024.159608 | ||||||||||||||||||||||||||||
Seitenbereich: | Seite 159608 | ||||||||||||||||||||||||||||
Verlag: | Elsevier | ||||||||||||||||||||||||||||
ISSN: | 0169-4332 | ||||||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||||||
Stichwörter: | Ink solvent Ionomer distribution Particle size Molecular dynamics PEMFC | ||||||||||||||||||||||||||||
HGF - Forschungsbereich: | Energie | ||||||||||||||||||||||||||||
HGF - Programm: | Materialien und Technologien für die Energiewende | ||||||||||||||||||||||||||||
HGF - Programmthema: | Chemische Energieträger | ||||||||||||||||||||||||||||
DLR - Schwerpunkt: | Energie | ||||||||||||||||||||||||||||
DLR - Forschungsgebiet: | E SP - Energiespeicher | ||||||||||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | E - Elektrochemische Prozesse | ||||||||||||||||||||||||||||
Standort: | Stuttgart | ||||||||||||||||||||||||||||
Institute & Einrichtungen: | Institut für Technische Thermodynamik > Elektrochemische Energietechnik | ||||||||||||||||||||||||||||
Hinterlegt von: | Friedrich, Prof.Dr. Kaspar Andreas | ||||||||||||||||||||||||||||
Hinterlegt am: | 13 Feb 2025 13:43 | ||||||||||||||||||||||||||||
Letzte Änderung: | 24 Feb 2025 11:47 |
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