Extruder

An extruder comprising:

• a supply module configured to supply an active material, a binder, and a conductive material;
• a mixing module configured to form an electrode slurry by mixing the active material, the binder, and the conductive material supplied from the supply module;
• a discharge module configured to discharge the electrode slurry;
• and
• a sensor configured to measure a characteristic value of the electrode slurry,
• wherein the mixing module comprises:
• a pair of screws parallel to each other in a longitudinal direction of the mixing module, the pair of screws having screw threads at an outer circumference thereof configured to rotate to engage each other;
• a barrel accommodating the pair of screws, and having a hole through which the electrode slurry is transmitted, the barrel configured to adjust a clearance between the pair of screws and an inner circumference of the hole;
• and
• a control module configured to control the barrel to adjust the clearance based on the measured characteristic value,
• wherein the barrel comprises:
• a first area adjacent to the supply module;
• a third area adjacent to the discharge module;
• and
• a second area between the first area and the third area, and
• wherein the control module is configured to control the barrel to adjust the clearance in at least one of the first area, the second area, or the third area based on the measured characteristic value.