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Li-ion Battery Foil Cutting Using Pulsed IR Fiber Lasers

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Li-ion Battery Foil Cutting Using Pulsed IR Fiber Lasers

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During the last decade we have witnessed the emergence of Li-ion batteries as a major force, empowering numerous technologies aiming to take mobility and clean energy to the next level. Recent advances have made pulsed fiber lasers a significant player in Li-ion battery manufacturing technology. In a typical Li-ion-cell manufacturing process, the electrode foils start out as rolled coated layers that need to be tailor-cut to the required shape before they are stacked, folded, sealed, and packaged, as depicted in Figure 1. Laser foil cutting provides many advantages over mechanical foil cutting techniques: it is a high-speed, high-precision, contact-free, cost-effective process with no tool wear, and it enables highly flexible pattern cutting, resulting in improved edge quality.

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