SLIT DIE FOR COATING ACTIVE MATERIAL OF LITHIUM RECHARGEABLE BATTERY AND COATING DEVISE OF ACTIVE MATERIAL USING THE SAME

摘要

Provided are a coating slit die for an active material and a coating device of active material, which inhibits an end part of a coated active material layer from thickening, and thus prevents a short circuit between electrode plates. The coating slit die(200) for an active material of a lithium rechargeable battery comprises: a first plate(210) and a second plate(220) of which the downside and the upside are separated from each other and are formed parallel to each other; and a spacer(230) that is interposed between the downside of the first plate(210) and the upside of the second plate(220) to form a space part through which slurry(250) passes, and is formed to correspond to the shapes of opposed faces of the first plate(210) and the second plate(220). The downside of the first plate(210) and the upside of the second plate(220) are tilted to the surface of an electrode current collector(260) to be coated with the slurry(250) in the slurry jet region(270) in which the slurry(250) is ejected. The spacer(230) has bending parts at the end parts to correspond with a downside shape of the first plate(210) and is formed to eject the slurry(250) as tilted to the surface of the electrode current collector(260).