MIXING DEVICE AND METHOD FOR SECONDARY BATTERY

A mixing device for a secondary battery, the mixing device including a container part storing a slurry, a driving part configured to rotate the container part, and a mixing jig part in the container part, wherein the slurry has a stirring hole therein, the mixing jig part creating the stirring hole in the slurry, the stirring hole increasing a contact area of the slurry for an additive.