STACKING-TYPED ELECTRODE ASSEMBLY AND PROCESS OF PREPARING THE SAME

• Main Authors: LEE, JAE PIL, YANG, SEUNG JIN, PARK, SEUNG YEOB, PARK, JONG HWAN, SHIN, YOUNG JOON, KIM, MIN SU
• Format: Patent
• Language: English
• Published: 30.10.2008
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

A stacking-typed electrode assembly is provided to realize excellent pulse discharge characteristic without the degradation of the capacity by using an electrode in which an electrode active material of the outermost layer is differently configured, as compared with the other electrodes of the inside. A stacking-typed electrode assembly is laminated with anodes(310,320) and cathodes(410,420) alternatively which are a plurality of unit electrodes having the respective size corresponding to the size of cell. The anode and cathode are electrically insulated with the two separation films having the length which can be consecutively winded in the state that completely surrounds them. In the process where the separation film films surround the unit electrodes, the electrode assembly has the structure which is not overlapped at the top and lower surface of the electrodes. The electrode active material is differently configured, as compared with the other electrodes of the inside so that the anode and cathode positioned at the outermost layer of the electrode assembly show excellent battery characteristic.