Method for manufacturing negative electrode for lithium secondary battery and negative electrode for lithium secondary battery

• Main Author: OH GWANG SEOK
• Format: Patent
• Language: English; Korean
• Published: 21.04.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The present invention relates to a method for manufacturing a negative electrode for a lithium secondary battery, a negative electrode for a lithium secondary battery manufactured using the same, and the negative electrode for a lithium secondary battery. The method for manufacturing a negative electrode for a lithium secondary battery according to the present invention can uniformly form a solid electrolyte interphase (SEI) on a metal layer, so that when the negative electrode for a lithium secondary battery manufactured using the same is applied to a lithium air battery, reversibility can be improved by suppressing a side reaction between a positive electrode active electrolyte and the metal layer, and as a result, battery performance can be improved due to an increase in lifespan of a battery without lowering initial efficiency. 본 발명은 리튬 이차전지용 음극의 제조방법, 상기 제조방법으로 제조된 리튬 이차전지용 음극, 및 상기 리튬 이차전지용 음극을 포함하는 리튬 공기전지에 관한 것으로써, 본 발명에 따른 리튬 이차전지용 음극의 제조방법은 금속층 상에 보호피막(Solid electrolyte interphase; SEI)을 균일하게 형성시킬 수 있으므로, 이로 제조된 리튬 이차전지용 음극을 리튬 공기전지에 적용하면 양극 활성 전해질과 금속층 간에 부반응을 억제시켜 가역성을 개선할 수 있고, 결과적으로 초기효율이 떨어뜨리지 않으면서도 전지수명이 증가하여 전지 성능을 향상시킬 수 있다.