公开(公告)号：KR1020120094249A

公开(公告)日：2012-08-24

申请号：KR1020110013629

申请日：2011-02-16

Applicant: 서울대학교산학협력단 ,  한국과학기술연구원

Inventor： 주영창 ,  정민석 ,  최인석 ,  문명운 ,  이세희

IPC: H01M4/04 ,  H01M10/052 ,  H01M4/38 ,  C23C14/14

CPC classification number: H01M4/1395 ,  H01M4/0421 ,  H01M4/049 ,  H01M4/386 ,  H01M4/624 ,  H01M4/661 ,  H01M10/0525 ,  Y02E60/122 ,  Y02P70/54

Abstract: PURPOSE: A negative electrode with excellent cycle like time is provided to release stress due to reaction with lithium, and to provide a negative electrode with stable cycle performance even after repeating charging/discharging. CONSTITUTION: A manufacturing method of a negative electrode for a lithium secondary battery comprises: a step of a silicon layer on a substrate(101); a step of supplying pretreatment gas to a surface of the silicon layer; a step of forming a plurality of silicon rods separated each other by etching the silicon layer; a step of filling a separated space between the silicon rods(105) with conductive solution; and a step of forming a current collector(108) in the separated space by drying the conductive solution. The negative electrode comprises a plurality of silicon rods formed on one side of the substrate, and a current collector filling the separated space between the silicon rods.

Abstract translation: 目的：提供具有优异的循环时间的负极以释放由于与锂的反应引起的应力，并且即使在重复充电/放电之后也提供具有稳定循环性能的负极。 构成：锂二次电池用负极的制造方法包括：在基板（101）上形成硅层的工序; 将预处理气体供给至硅层的表面的工序; 通过蚀刻硅层形成彼此分离的多个硅棒的步骤; 在硅棒（105）与导电溶液之间填充分离的空间的步骤; 以及通过干燥导电溶液在分离的空间中形成集电体（108）的步骤。 负极包括形成在基板的一侧上的多个硅棒，以及填充硅棒之间的分离空间的集电体。