Details
| Originalsprache | Englisch |
|---|---|
| Aufsatznummer | 042019 |
| Fachzeitschrift | Journal of laser applications |
| Jahrgang | 37 |
| Ausgabenummer | 4 |
| Frühes Online-Datum | 6 Okt. 2025 |
| Publikationsstatus | Veröffentlicht - Nov. 2025 |
Abstract
Microporous layers (MPLs) have emerged as a promising approach to enhancing the efficiency of polymer electrolyte membrane electrolysis cells. While there are many studies addressing the mass-perforation of foil materials, the process of perforation of thin titanium foils remains challenging. A significant challenge in the processing of titanium foils pertains to effective heat management during laser processing. Even at low fluences and ultrashort pulses, thermal deformation occurs, resulting in the displacement of the foil material and, therefore, loss of perforation. This deformation is observed to be fluence-dependent. Furthermore, experimental evidence has demonstrated that a titanium foil does not undergo significant oxidation during the perforation process, which is a fundamental prerequisite for utilization in an electrolysis cell. Energy-dispersive x-ray spectroscopy analyses provide corroboration for this finding. The present study investigates three “on-the-fly” strategies for the production of MPLs: a conventional drilling process, an optimized drilling process, and an optimized multispot (9 × 1) drilling process. The experiments are conducted with a 10 μm-thick titanium foil, which is perforated over an area of 20 × 20 mm2 using a femtosecond laser. The objective is to achieve the highest possible perforation rates, while maintaining high quality. The perforation is analyzed by examining the ablation rates and the hole geometry. This allows for the production of hole exit diameters in the single-digit micrometer range while using comparatively high focal lengths (f = 100 mm). Finally, the processing times are analyzed and an estimate is given for scaling to larger areas.
ASJC Scopus Sachgebiete
- Werkstoffwissenschaften (insg.)
- Elektronische, optische und magnetische Materialien
- Physik und Astronomie (insg.)
- Atom- und Molekularphysik sowie Optik
- Ingenieurwesen (insg.)
- Biomedizintechnik
- Physik und Astronomie (insg.)
- Instrumentierung
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in: Journal of laser applications, Jahrgang 37, Nr. 4, 042019, 11.2025.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Laser micromachining strategies for high quality perforation of thin titanium foils to produce microporous layers for polymer electrolyte membrane electrolysis
AU - Wienke, Alexander
AU - Springer, Matthias
AU - Stein, Lukas
AU - Trinke, Patrick
AU - Bensmann, Boris
AU - Jäschke, Peter
AU - Hanke-Rauschenbach, Richard
AU - Kaierle, Stefan
N1 - Publisher Copyright: © 2025 Author(s).
PY - 2025/11
Y1 - 2025/11
N2 - Microporous layers (MPLs) have emerged as a promising approach to enhancing the efficiency of polymer electrolyte membrane electrolysis cells. While there are many studies addressing the mass-perforation of foil materials, the process of perforation of thin titanium foils remains challenging. A significant challenge in the processing of titanium foils pertains to effective heat management during laser processing. Even at low fluences and ultrashort pulses, thermal deformation occurs, resulting in the displacement of the foil material and, therefore, loss of perforation. This deformation is observed to be fluence-dependent. Furthermore, experimental evidence has demonstrated that a titanium foil does not undergo significant oxidation during the perforation process, which is a fundamental prerequisite for utilization in an electrolysis cell. Energy-dispersive x-ray spectroscopy analyses provide corroboration for this finding. The present study investigates three “on-the-fly” strategies for the production of MPLs: a conventional drilling process, an optimized drilling process, and an optimized multispot (9 × 1) drilling process. The experiments are conducted with a 10 μm-thick titanium foil, which is perforated over an area of 20 × 20 mm2 using a femtosecond laser. The objective is to achieve the highest possible perforation rates, while maintaining high quality. The perforation is analyzed by examining the ablation rates and the hole geometry. This allows for the production of hole exit diameters in the single-digit micrometer range while using comparatively high focal lengths (f = 100 mm). Finally, the processing times are analyzed and an estimate is given for scaling to larger areas.
AB - Microporous layers (MPLs) have emerged as a promising approach to enhancing the efficiency of polymer electrolyte membrane electrolysis cells. While there are many studies addressing the mass-perforation of foil materials, the process of perforation of thin titanium foils remains challenging. A significant challenge in the processing of titanium foils pertains to effective heat management during laser processing. Even at low fluences and ultrashort pulses, thermal deformation occurs, resulting in the displacement of the foil material and, therefore, loss of perforation. This deformation is observed to be fluence-dependent. Furthermore, experimental evidence has demonstrated that a titanium foil does not undergo significant oxidation during the perforation process, which is a fundamental prerequisite for utilization in an electrolysis cell. Energy-dispersive x-ray spectroscopy analyses provide corroboration for this finding. The present study investigates three “on-the-fly” strategies for the production of MPLs: a conventional drilling process, an optimized drilling process, and an optimized multispot (9 × 1) drilling process. The experiments are conducted with a 10 μm-thick titanium foil, which is perforated over an area of 20 × 20 mm2 using a femtosecond laser. The objective is to achieve the highest possible perforation rates, while maintaining high quality. The perforation is analyzed by examining the ablation rates and the hole geometry. This allows for the production of hole exit diameters in the single-digit micrometer range while using comparatively high focal lengths (f = 100 mm). Finally, the processing times are analyzed and an estimate is given for scaling to larger areas.
KW - beam shaping
KW - femtosecond lasers
KW - hole arrays
KW - laser ablation
KW - micromachining
KW - microperforation
KW - microporous layers
KW - on-the-fly drilling
KW - PEMWE
KW - titanium foils
UR - http://www.scopus.com/inward/record.url?scp=105017859888&partnerID=8YFLogxK
U2 - 10.2351/7.0001935
DO - 10.2351/7.0001935
M3 - Article
AN - SCOPUS:105017859888
VL - 37
JO - Journal of laser applications
JF - Journal of laser applications
SN - 1042-346X
IS - 4
M1 - 042019
ER -