FREE-STANDING ELECTRODE FILM FOR DRY ELECTRODE MANUFACTURE
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United States of America Patent
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Issued Date -
Dec 21, 2023
app pub date -
Jun 8, 2022
filing date -
Jun 8, 2022
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Abstract
An apparatus for manufacturing an electrode for an energy storage device includes at least one laminator for simultaneously laminating two free-standing electrode films on opposite sides of a current collector and a pair of mill lines operable to produce, respectively, the two films and to feed the two films simultaneously to the laminator. Each mill line may have at least one press including working rolls arranged horizontally for pressing a powder mixture into a respective one of the films and at least one press including working rolls (typically arranged vertically) for reducing the thickness of the respective film. The apparatus may include a mill line expansion module that is insertable into a mill line and has at least one additional press including working rolls for reducing the thickness and controlling other key parameters of the respective film. Films may have elongation below 4% and tensile strength below 250 kPa.
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