| 摘要 |
PROBLEM TO BE SOLVED: To suppress the generation of aggregation products by weakening shearing stress in mixing after a resin binder is added, prevent the generation of coating stripes, prevent the generation of pinholes and cracks in an active material layer by removing bubbles contained in paste, and provide a battery electrode with no coming off of an active material. SOLUTION: Strong shearing stress is applied before a resin binder is added to accelerate the formation of primary particles of a solid component, and weak shearing stress is applied after the resin binder is added to prevent the generation of aggregation of the resin binder. Paste for forming an active material layer is evacuated at 60 Torr or less to naturally break bubbles to remove bubbles in the paste. By using this paste, battery characteristics are improved. |
