SECONDARY BATTERY ELECTRODE AND PRODUCTION METHOD THEREOF AND SECONDARY BATTERY

• Main Authors: HONG, SOUL GIE, PARK, SUNG JOON, JU, YONG KYU, CHOI, SEUNG DON
• Format: Patent
• Language: English; Korean
• Published: 30.05.2012
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

PURPOSE: An electrode for secondary battery is provided to have a conductive layer comprising a polymer binder with improved elongation and very strong adhesion, thereby improving adhesion between an electrode current collector and an electrode active material layer, and manufacturing a large-size secondary battery with excellent coatability and battery performance. CONSTITUTION: An electrode for secondary battery(10) comprises an electrode current collector(11), and an electrode active material layer(13), and additionally comprises a conductive layer(12) between the electrode current collector and the electrode active material layer. The thickness of the conductor is 1-10 micron. The conductive layer comprises at least one selected from conductive carbon, conductive fiber, metal powder, conductive whisky, and conductive metal oxide. A manufacturing method of the electrode comprises a step of coating the conductive layer on the electrode current collector by using conductive solution, and a step of coating the electrode active material layer on the conductive layer.