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17 March 2023 Laser structured electrodes for battery production
Simon Walker, Marcel-David Zwahlen, Axel Fuerst, Beat Neuenschwander
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Proceedings Volume PC12408, Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXVIII; PC124080S (2023) https://doi.org/10.1117/12.2654194
Event: SPIE LASE, 2023, San Francisco, California, United States
Abstract
The performance of lithium-ion-batteries at high current charging rates can be enhanced through laser structuring of the electrode coatings. Using picosecond laser pulses, various structures in the cathode coating were created. The manufactured pouch cell batteries were formed and cycled at different current rates. The discharge capacity was measured for each cycle and compared with non-structured reference cells. The results of batteries with hole patterns show an improvement of the specific discharge capacity, depending on the hole diameter and distance. A significant increase in the discharge capacity was measured for line structures, plus an enhanced ageing over the first cycles.
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Simon Walker, Marcel-David Zwahlen, Axel Fuerst, and Beat Neuenschwander "Laser structured electrodes for battery production", Proc. SPIE PC12408, Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXVIII, PC124080S (17 March 2023); https://doi.org/10.1117/12.2654194
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KEYWORDS
Electrodes
Coating
Picosecond phenomena
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