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Lithium-Ion Battery Foil Cutting with Picosecond IR Lasers and Burst Mode

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Lithium-Ion Battery Foil Cutting with Picosecond IR Lasers and Burst Mode

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Lithium-ion batteries have a layered structure, comprised of several elements: a cathode battery foil, an anode battery foil, a separator material, and an electrolyte. The battery foils consist of a metal substrate – typically copper for the anode and aluminum for the cathode – and an active material applied as a coating to that substrate. For the anode the active material is very often graphite, however for the cathode several different active material chemistries are employed, such as NMC (LiNiMnCoO2 ), LFP (LiFePO4 ), or LNMO (LiNi0.5Mn1.5O4 ).

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