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Fast Lithium-ion Battery Electrode Cutting with High-Power Femtosecond Pulses

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Fast Lithium-ion Battery Electrode Cutting with High-Power Femtosecond Pulses

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Lithium-ion batteries’ high energy density, lightweight design, and good lifetime, they play a crucial role in many modern industries, from portable electronics and electric vehicles to both home and industrial energy storage systems. As these spaces and others continue to grow, the demand for lithiumion batteries grows with it, motivating the continuous improvement of production methods. The batteries are composed of layers of coated metal foils (electrodes), the processing of which requires high speed, single pass cutting and good edge quality, for which ultrashort pulsed lasers are ideally suited. In prior work, we demonstrated foil cutting using picosecond pulse widths and TimeShift™ pulse tailoring (Application Note 60). Building on that, here we present cutting results for anode and cathode Li-ion battery foils using the IceFyre® FS IR200 femtosecond laser.

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