MANUFACTURING METHOD OF CATHODE COATING COMPOSITION FOR LITHIUM ION SECONDARY BATTERY AND LITHIUM ION SECONDARY BATTERY

PROBLEM TO BE SOLVED: To provide a manufacturing method of a cathode with high density, and a lithium ion secondary battery with high capacity using the cathode. SOLUTION: A biaxial continuous kneader having a paddle returning a kneaded composition for the cathode in a direction reverse to a transpo...

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Hauptverfasser:	SAITO HIROYUKI, HAYASHI KEIICHI, KISHI FUMIHIKO, TSUBATA HIDEKI
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRICITY MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a manufacturing method of a cathode with high density, and a lithium ion secondary battery with high capacity using the cathode. SOLUTION: A biaxial continuous kneader having a paddle returning a kneaded composition for the cathode in a direction reverse to a transporting direction and/or a combination of the paddles is used, and the electrode is densified prior to a compressing process by imparting a high shearing force to the kneaded composition by turning a density of a solid part at kneading up to 90 to 98%, and by making a conductive assistant uniformly adhere on the surface of a cathode activator, whereby, the capacity of the battery is increased. COPYRIGHT: (C)2005,JPO&NCIPI