Negative Electrode for Lithium Secondary Battery, and Magnetic Alignment Device for Negative Electrode for Same

DRIVE December 26, 2024
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A magnetic alignment device applies a magnetic field to a negative electrode slurry by introducing a magnet part to an upper and a lower portion of a negative electrode current collector to which the negative electrode slurry is applied, respectively, wherein a first region located upstream along a transfer direction of the negative electrode current collector is capable of applying a stronger magnetic force than a second region located downstream in the magnet part. Accordingly, in manufacturing the negative electrode, the alignment of the carbon-based negative electrode active material contained in the negative electrode slurry and the arithmetic mean height of the surface of the negative electrode active layer can be easily controlled to a certain range. Furthermore, the negative electrode prepared according to the method has the advantage of having excellent electrical properties and surface properties of the negative electrode active layer.

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