Scaling of ultrashort-pulsed laser structuring processes for electromobility applications using a spatial light modulator

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F24%3A00600310" target="_blank" >RIV/68378271:_____/24:00600310 - isvavai.cz</a>

Result on the web

<a href="https://hdl.handle.net/11104/0371561" target="_blank" >https://hdl.handle.net/11104/0371561</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.2351/7.0001546" target="_blank" >10.2351/7.0001546</a>

Result language

angličtina

Original language name

Scaling of ultrashort-pulsed laser structuring processes for electromobility applications using a spatial light modulator

Original language description

The structuring of lithium-ion battery (LIB) electrodes and the diffusion media (DM) for polymer electrolyte membrane fuel cells (PEMFCs) with ultrashort laser pulses enables improved performance characteristics of both technologies. However, the transfer of the approaches from a laboratory scale to a commercial use has previously been hindered by the low average output power of ultrashort-pulsed (USP) laser beam sources and the limited productivity of single-beam structuring using scanning optics. Recent advancements in the development of USP laser systems have led to a steady increase in the available output power, thereby enabling new fields of applications. This study aims at accelerating the USP laser structuring of LIB electrodes and DM for PEMFCs to industrially relevant processing rates by comparing a single-beam with a multibeam structuring process regarding ablation characteristics and quality. For the multibeam strategy, the shape of the laser beam was modified by a spatial light modulator (SLM). In addition to microholes, the insertion of microchannels was investigated to demonstrate the high flexibility of state-of-the-art SLMs. The geometry of the created structures was measured with a laser scanning microscope, and the different layers were tested for their geometrical and electrochemical properties to compare both technologies. The results confirmed that applying an SLM enables high-quality microstructures with significantly higher structuring rates. Furthermore, this contribution includes a theoretical analysis of the specifications required for a laser setup to reach an industrially relevant productivity of the structuring processes.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10306 - Optics (including laser optics and quantum optics)

Project

<a href="/en/project/EH22_008%2F0004573" target="_blank" >EH22_008/0004573: Breakthrough Laser Technologies for Smart Manufacturing, Space and Bio-Tech Applications</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Laser Applications

ISSN

1042-346X

e-ISSN

1938-1387

Volume of the periodical

36

Issue of the periodical within the volume

4

Country of publishing house

US - UNITED STATES

Number of pages

13

Pages from-to

042036

UT code for WoS article

001330319800002

EID of the result in the Scopus database

2-s2.0-85206472463