Method of manufacturing battery electrode and coating die for use therein

摘要

The objective of the present invention is to provide an unexpected method of manufacturing a battery electrode and a coating die for use therein, both of which are capable of providing a high speed drying and of improving a peel strength between a collector and a compound. The manufacturing process S1 of manufacturing the battery electrode 1 includes the process of coating the compound 3 containing the electrode active material 4 and the binder 5 on the sheet collector 2 and the process of drying the compound 3 to bond the collector 2 and the compound 3, wherein in the coating process, a laser light is emitted to the interface between the compound 3 and the collector 2. Due to the above structure, regardless of the drying speed, the binder 5 contained in the compound 3 is crystallized at the interface with respect to the collector 2. As a result, the high speed drying is provided and the peel strength between the collector 2 and the compound 3 is improved.

主权项

1. A method of manufacturing a battery electrode, comprising:
coating a compound containing an electrode active material and a binder on a sheet collector using a coating die; and drying the compound to bond the collector and the compound, wherein in the coating, a laser light is emitted to an interface between the compound and the collector when the coating die is coating the compound, and wherein in the drying, a drying speed is set larger than a minimum speed where a migration occurs in the compound.