Micro-perforation of the diffusion media for polymer electrolyte membrane fuel cells using short and ultrashort laser pulses

Geiger, Christian; Kriegler, Johannes; Weiss, Tony; Berger, Anne; Zaeh, Michael F.

doi:10.1016/j.procir.2022.08.131

Cited by 7 publications

(1 citation statement)

References 23 publications

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“…Due to the range and versatility of commercial laser systems, laser drilling of micro-holes is a highly attractive technology for the manufacture of these critical porous structures and micro-perforations for PEM and AWE electrolysers. Recently, Geiger et al 17 and Alrashidi et al 18 separately employed short and ultra-short pulsed lasers to create micro-holes ranging from 30 to 500 µm in diameter across different diffusion media for improved water management. Wen et al demonstrated laser drilling in the manufacture of specialist GDL that exhibited increased antiflooding characteristics using tapered micro-holes 19 .…”

Section: Introductionmentioning

confidence: 99%

High speed laser drilling of micro-holes for hydrogen applications

Leering,

Elkington,

Ellis

et al. 2024

Laser-Based Micro- And Nanoprocessing XVIII

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In recent years, there has been a notable surge in efforts to advance hydrogen electrolysers and fuel cell technology, pinpointing green hydrogen as a viable avenue toward the decarbonization of pivotal industries. Laser drilling emerges as a fundamental technology, enabling the creation of porous structures and micro-holes in critical components essential for constructing contemporary hydrogen electrolysers. To effectively bring micro-hole drilling into commercial use within this domain, it is imperative to develop processing capabilities that facilitate high-speed operations and increased throughput rates across diverse materials.This study investigates the potential of generating micro-holes through 1 mm thick C263 Nickel alloy, a prevalent material utilized in hydrogen electrolysers, using a single-mode fibre laser. Employing a single-mode fibre laser in conjunction with a nozzle-based coaxial processing gas, the research investigates the process of creating these holes. Experimental trials were conducted to comprehend how peak power and pulse duration influence the size and quality of micro-holes drilled by a single pulse of laser energy. The results showcased the production of micro-holes with an average diameter of less than 80 µm at a rate of around 680 holes per second, maintaining a high level of consistency.

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Section: Introductionmentioning

confidence: 99%