BINDER FOR MANUFACTURING A POSITIVE ELECTRODE OF LITHIUM-SULFUR BATTERY AND MATHOD FOR MANUFACTURING THE POSITIVE ELECTRODE USING THE SAME

• Main Authors: KIM TAEK GYOUNG, YANG DOO KYUNG, LEE CHOONG HYEON, LEE JOO HYEONG
• Format: Patent
• Language: English; Korean
• Published: 10.06.2019
• 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 binder for manufacturing a positive electrode of a lithium-sulfur battery and a method for manufacturing the positive electrode using the same. The binder comprises two or more lithium-substituted polyacrylic acids having different molecular weights. The lithium-substituted polyacrylic acid comprises two types of lithium-substituted polyacrylic acids having a weight average molecular weight difference of 500,000 or more. According to the present invention, the binder exhibits excellent adhesion when applied to a battery while being easy to be processed. 본 발명은 리튬-황 전지의 양극 제조용 바인더 및 이를 사용한 양극의 제조방법에 관한 것이다. 상기 바인더는 분자량이 다른 2종 이상의 리튬 치환 폴리아크릴산을 포함한다. 상기 리튬 치환 폴리아크릴산은 서로 500,000 이상의 중량평균분자량이 차이가 나는 2종의 리튬 치환 폴리아크릴산을 포함한다.