Slot die coater and electrode plate of rechargeable battery and ceramic insulator

A slot die coater, comprising:

• a bottom die and a top die disposed in a top-bottom direction and coupled to each other, the bottom die and the top die being configured to:
• form a coated portion by coating an active material slurry on an electrode substrate, and
• discharge a ceramic insulating material to a boundary of the coated portion and an uncoated portion to form a ceramic insulation layer;
• and
• a spacer including:
• an active material discharge portion between the bottom die and the top die, the active material discharge portion providing an active material discharge port that is configured to discharge the active material slurry, and
• a ceramic material discharge portion providing a ceramic discharge port that is configured to discharge the ceramic insulating material,
• wherein:
• the active material discharge port is at a center of the electrode substrate in a width direction,
• the ceramic discharge port is on respective sides of the active material discharge port in the width direction, and
• the ceramic discharge port is configured to form the ceramic insulation layer by overlapping the ceramic insulation layer on the coated portion at respective ends in the width direction.