Mixing device and electrode mixing method

An electrode mixing method comprising:

• providing, via a supply module, an active material, a binder, and/or a conductive material to a mixing module;
• forming, via the mixing module, an electrode slurry by combining the active material, the binder, and/or the conductive material;
• and
• discharging, via a discharge module, the electrode slurry,
• wherein the forming comprises:
• providing the active material, the binder, and/or the conductive material to a barrel comprising a hole configured to accommodate a first screw and a second screw of the mixing module, wherein the barrel comprises one or more of an embossed pattern or a debossed pattern formed on an inner surface of the hole;
• and
• combining the active material, the binder, and/or the conductive material by rotating the first screw and the second screw.