KR20200046943A - 리튬 이차 전지용 전극의 제조방법 및 이를 이용하여 제조한 리튬 이차 전지용 전극 - Google Patents
리튬 이차 전지용 전극의 제조방법 및 이를 이용하여 제조한 리튬 이차 전지용 전극 Download PDFInfo
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Abstract
Description
| 용량 비율 ((%), 실시예 1 기준) | ||
| 상온(25℃) | 고온(45℃) | |
| 실시예 1 | 100 | 100 |
| 실시예 2 | 105 | 110 |
| 실시예 3 | 102 | 103 |
| 실시예 4 | 101 | 102 |
| 실시예 5 | 100 | 100 |
| 실시예 6 | 98 | 99 |
| 실시예 7 | 100 | 100 |
| 실시예 8 | 100 | 100 |
| 실시예 9 | 100 | 100 |
| 실시예 10 | 103 | 108 |
| 실시예 11 | 101 | 97 |
| 실시예 12 | 99 | 102 |
| 실시예 13 | 95 | 97 |
| 실시예 14 | 100 | 100 |
| 실시예 15 | 100 | 100 |
| 실시예 16 | 97 | 99 |
| 비교예 1 | 76 | 55 |
| 비교예 2 | 48 | 24 |
| 비교예 3 | 52 | 21 |
| 비교예 4 | 63 | 60 |
| 비교예 5 | 81 | 62 |
| 비교예 6 | 78 | 65 |
| 비교예 7 | 94 | 92 |
| 계면저항 비율((%), 실시예 1 기준) | |
| 실시예 1 | 100 |
| 실시예 2 | 80 |
| 실시예 3 | 42 |
| 실시예 4 | 81 |
| 실시예 5 | 85 |
| 실시예 6 | 109 |
| 실시예 7 | 101 |
| 실시예 8 | 102 |
| 실시예 9 | 100 |
| 실시예 10 | 80 |
| 실시예 11 | 75 |
| 실시예 12 | 83 |
| 실시예 13 | 112 |
| 실시예 14 | 100 |
| 실시예 15 | 100 |
| 비교예 1 | 200 |
| 비교예 2 | 160 |
| 비교예 3 | 250 |
| 비교예 4 | 150 |
| 비교예 5 | 138 |
| 비교예 6 | 146 |
| 50 사이클 후 용량 유지율(%,고온(45℃)) | |
| 실시예 1 | 91 |
| 실시예 2 | 93 |
| 실시예 3 | 93 |
| 실시예 4 | 95 |
| 실시예 5 | 96 |
| 실시예 6 | 90 |
| 실시예 7 | 91 |
| 실시예 8 | 91 |
| 실시예 9 | 92 |
| 실시예 10 | 93 |
| 실시예 11 | 97 |
| 실시예 12 | 95 |
| 실시예 13 | 87 |
| 실시예 14 | 91 |
| 실시예 15 | 91 |
| 실시예 16 | 95 |
| 비교예 1 | 0.2 |
| 비교예 2 | 5 |
| 비교예 3 | 0.5 |
| 비교예 4 | 7 |
| 비교예 5 | 62 |
| 비교예 6 | 38 |
| 비교예 7 | 72 |
| 발화 여부 | 발화 시작 시간(분) | |
| 실시예 1 | X | - |
| 실시예 2 | X | - |
| 실시예 3 | X | - |
| 실시예 4 | X | - |
| 실시예 5 | X | - |
| 실시예 6 | X | - |
| 실시예 7 | X | - |
| 실시예 8 | X | - |
| 실시예 9 | X | - |
| 실시예 10 | X | - |
| 실시예 11 | O | 200 |
| 실시예 12 | X | - |
| 실시예 13 | X | - |
| 실시예 14 | X | - |
| 실시예 15 | X | - |
| 실시예 16 | X - | |
| 비교예 1 | O | 20 |
| 비교예 2 | O | 30 |
| 비교예 3 | O | 30 |
| 비교예 4 | O | 45 |
| 비교예 5 | O | 75 |
| 비교예 6 | O | 150 |
| 비교예 7 | O | 120 |
Claims (10)
- 전극 집전체를 제1 전해질막 형성용 조성물에 침지시킨 후 전류를 가하여 제1전해질막을 형성시키는 단계; 및
상기 제1전해질막이 형성된 전극 집전체를 제2조성물에 침지시킨 후 전류를 가하여 제2전해질막을 형성시키는 단계;를 포함하고,
상기 제1전해질막 형성용 조성물 및 제2전해질막 형성용 조성물 중 하나가 유기 전해질막 형성용 조성물이고, 다른 하나가 무기 전해질막 형성용 조성물이며,
상기 무기 전해질막 형성용 조성물은 하기 화학식 1로 표시되는 화합물을 포함하는 것인 리튬 이차 전지용 전극의 제조방법:
[화학식 1]
MM'Xn-m(SO2)
M은 Li, Na, K 및 Rb로 이루어진 군에서 선택되는 금속원소이고,
M'는 Al, Ga, In 및 Ti로 이루어진 군에서 선택되는 금속원소이며,
X는 F, Cl, Br 및 I로 이루어진 군에서 선택되는 할로겐 원소이고,
n은 1 내지 6인 정수이며,
m은 1 내지 10인 정수이다.
- 제1항에 있어서,
상기 제1 전해질막 형성용 조성물은 유기 전해질막 형성용 조성물이고,
상기 제2 전해질막 형성용 조성물은 무기 전해질막 형성용 조성물인 것인 리튬 이차 전지용 전극의 제조방법.
- 제1항에 있어서,
상기 제1 전해질막 형성용 조성물은 무기 전해질막 형성용 조성물이고,
상기 제2 전해질막 형성용 조성물은 유기 전해질막 형성용 조성물인 것인 리튬 이차 전지용 전극의 제조방법.
- 제1항에 있어서,
상기 유기 전해질막 형성용 조성물은, 유기용매를 포함하고,
상기 유기용매는, 할로겐 원소가 치환 또는 비치환된 카보네이트계 화합물, 할로겐 원소가 치환 또는 비치환된 아세테이트계 화합물, 할로겐 원소가 치환 또는 비치환된 글라임계 화합물, 할로겐 원소가 치환 또는 비치환된 에테르계 화합물 및 할로겐 원소가 치환 또는 비치환된 니트릴계 화합물로 이루어진 군에서 선택되는 적어도 하나 이상의 화합물을 포함하는 것인 리튬 이차 전지용 전극의 제조방법.
- 제1항에 있어서,
상기 유기 전해질막 형성용 조성물은, 리튬염을 포함하는 것인 리튬 이차 전지용 전극의 제조방법.
- 제1항에 있어서,
상기 유기 전해질막 형성용 조성물은, 첨가제를 더 포함하며,
상기 첨가제는 비닐렌 카보네이트, 비닐에틸렌 카보네이트, 프로판설톤, 프로펜설톤, 리튬 다이플루오로(옥살라토)포스페이트, 리튬 다이플루오로(옥살라토)보레이트, 리튬테트라플루오로옥살레이트포스페이트, 숙신나이트릴, 숙신산무수물, 에틸렌 설페이트, 에틸렌글리콜비스(프로피오나이트릴)에터, 리튬 테트라플루오로보레이트, 플루오로에틸렌 카보네이트 및 리튬다이플루오로포스페이트로 이루어진 군에서 선택되는 적어도 하나 이상의 화합물을 포함하는 것인 리튬 이차 전지용 전극의 제조방법.
- 제1항에 있어서,
상기 화학식 1로 표시되는 화합물은, LiAlCl4-3(SO2) 및 NaAlCl4-2(SO2)로 이루어진 군에서 선택되는 하나 이상의 화합물인 것인 리튬 이차 전지용 전극의 제조방법.
- 제1항에 있어서,
상기 무기 전해질막 형성용 조성물은,
무기 이온성 액체를 더 포함하는 것인 리튬 이차 전지용 전극의 제조방법.
- 전극 집전체 및 상기 전극 집전체 상에 유기 전해질막 및 무기 전해질막을 포함하고,
상기 무기 전해질막은 하기 화학식 1로 표시되는 화합물이 환원되어 형성되는 것인 리튬 이차 전지용 전극:
[화학식 1]
MM'Xn-m(SO2)
M은 Li, Na, K 및 Rb로 이루어진 군에서 선택되는 금속원소이고,
M'는 Al, Ga, In 및 Ti로 이루어진 군에서 선택되는 금속원소이며,
X는 F, Cl, Br 및 I로 이루어진 군에서 선택되는 할로겐 원소이고,
n은 1 내지 6인 정수이며,
m은 1 내지 10인 정수이다.
- 제9항에 있어서,
상기 유기 전해질막 및 무기 전해질막은 하나의 층에 혼재되어 존재하는 것인 리튬 이차 전지용 전극.
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| KR1020180128788A KR102594515B1 (ko) | 2018-10-26 | 2018-10-26 | 리튬 이차 전지용 전극의 제조방법 및 이를 이용하여 제조한 리튬 이차 전지용 전극 |
| US17/288,396 US12355059B2 (en) | 2018-10-26 | 2019-10-18 | Method of preparing electrode for lithium secondary battery and electrode for lithium secondary battery prepared by using the same |
| EP19875433.5A EP3855535B1 (en) | 2018-10-26 | 2019-10-18 | METHOD FOR MANUFACTURED ELECTRODES FOR SECONDARY LITHIUM BATTERIES AND ELECTRODES FOR SECONDARY LITHIUM BATTERIES THUS MANUFACTURED |
| ES19875433T ES3063152T3 (en) | 2018-10-26 | 2019-10-18 | Method of preparing an electrode for a lithium secondary battery and electrode for lithium secondary battery prepared by using the same |
| PCT/KR2019/013780 WO2020085726A1 (ko) | 2018-10-26 | 2019-10-18 | 리튬 이차 전지용 전극의 제조방법 및 이를 이용하여 제조한 리튬 이차 전지용 전극 |
| CN201980070826.6A CN113544880B (zh) | 2018-10-26 | 2019-10-18 | 制备用于锂二次电池的电极的方法以及通过使用该方法制得的用于锂二次电池的电极 |
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| CN118547351B (zh) * | 2024-07-30 | 2024-11-01 | 武汉船用电力推进装置研究所(中国船舶集团有限公司第七一二研究所) | 一种三维无锂负极集流体、其制备方法及锂金属电池 |
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| CN113544880B (zh) | 2024-09-24 |
| KR102594515B1 (ko) | 2023-10-27 |
| WO2020085726A1 (ko) | 2020-04-30 |
| US12355059B2 (en) | 2025-07-08 |
| EP3855535A4 (en) | 2021-11-17 |
| US20210359287A1 (en) | 2021-11-18 |
| EP3855535A1 (en) | 2021-07-28 |
| ES3063152T3 (en) | 2026-04-15 |
| CN113544880A (zh) | 2021-10-22 |
| EP3855535B1 (en) | 2025-12-31 |
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