ELECTRODE FOR A LITHIUM SECONDARY BATTERY AND METHOD OF PREPARING THE SAME

• Main Authors: JANG, HYE RIM, HWANG, CHANG MOOK
• Format: Patent
• Language: English; Korean
• Published: 13.12.2017
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The present invention relates to an electrode collector for a lithium secondary battery, and more specifically, to an electrode collector for a lithium secondary battery which grows a dendrite of collector materials on a surface thereof, increases adhering force between the electrode collector and an electrode active material layer to prevent a detachment phenomenon since a maximum height of surface roughness (Rmax) ranges from 1 to 5 m, and on the basis of the increase in the adhering force, enables the electrode active material layer to be highly densified, and makes a battery have a high output, a high capacity, and improve a capacity maintaining rate by increasing a contact area between the electrode collector and the electrode active material layer. 본 발명은 리튬 이차전지용 전극 집전체에 관한 것으로, 보다 상세하게는 표면에 집전체 물질의 덴드라이트가 성장되어 있으며 최대높이 표면 거칠기(Rmax)가 1 내지 5㎛ 임으로써, 전극 집전체와 전극활물질층간의 접착력을 증가시켜 탈리현상을 방지하고, 접착력 증가를 바탕으로 전극 활물질층의 고밀도화가 가능하며, 전극 집전체와 전극활물질층의 접촉 면적을 증가시킴으로써 전지의 고출력, 고용량 및 용량 유지율 향상이 가능한 리튬 이차전지용 전극 집전체에 관한 것이다.