KR20220062034A - 리튬 이온 배터리 및 리튬 이온 배터리를 제조하기 위한 방법 - Google Patents
리튬 이온 배터리 및 리튬 이온 배터리를 제조하기 위한 방법 Download PDFInfo
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Abstract
Description
Claims (11)
- 복합 양극 활성 물질을 포함하는 양극 및 음극 활성 물질을 포함하는 음극을 갖는, 리튬 이온 배터리로서,
상기 복합 양극 활성 물질은 하나 이상의 제1 및 제2 양극 활성 물질을 포함하며,
상기 제2 양극 활성 물질은 스피넬 구조를 갖는 화합물이며,
상기 제1 양극 활성 물질은 리튬화 정도(a)를 그리고 상기 제2 양극 활성 물질은 리튬화 정도(b)를 가지며,
리튬 이온 배터리의 제1 방전 과정 및/또는 충전 과정 전에는 제2 양극 활성 물질의 리튬화 정도(b)가 제1 양극 활성 물질의 리튬화 정도(a)보다 낮으며, 그리고
상기 음극 활성 물질은 리튬 이온 배터리의 제1 방전 과정 및/또는 충전 과정 전에 예비 리튬화된, 리튬 이온 배터리. - 제1항에 있어서, 상기 제1 양극 활성 물질이 과잉 리튬화 산화물(OLO)을 포함하는 층상 산화물, 올리빈 구조를 갖는 화합물, 스피넬 구조를 갖는 화합물 및 이들의 조합물로 이루어진 군으로부터 선택된 것을 특징으로 하는, 리튬 이온 배터리.
- 제1항 또는 제2항에 있어서, 상기 제1 양극 활성 물질의 리튬화 정도와 상기 제2 양극 활성 물질의 리튬화 정도 간의 차이가 0.1 또는 그 이상, 바람직하게는 0.5 또는 그 이상인 것을 특징으로 하는, 리튬 이온 배터리.
- 제1항 내지 제3항 중 어느 한 항에 있어서, 상기 층상 산화물이 니켈 및 코발트를 함유하며, 그리고 특히 니켈-코발트-망간 화합물 또는 니켈-코발트-알루미늄 화합물인 것을 특징으로 하는, 리튬 이온 배터리.
- 제1항 내지 제4항 중 어느 한 항에 있어서, 상기 제1 및/또는 제2 양극 활성 물질 내에 있는 스피넬 구조를 갖는 화합물이 망간을 기반으로 하는, 특히 λ-Mn2O4를 기반으로 하는 화합물을 포함하는 것을 특징으로 하는, 리튬 이온 배터리.
- 제1항 내지 제5항 중 어느 한 항에 있어서, 상기 제2 양극 활성 물질의 중량 비율이 복합 양극 활성 물질의 총 중량을 기준으로 상기 제1 양극 활성 물질의 중량 비율보다 낮은 것을 특징으로 하는, 리튬 이온 배터리.
- 제1항 내지 제6항 중 어느 한 항에 있어서, 상기 음극 활성 물질이 탄소 함유 물질, 규소, 규소-아산화물, 규소 합금, 알루미늄 합금, 인듐, 인듐 합금, 주석, 주석 합금, 코발트 합금 및 이들의 혼합물로 이루어진 군으로부터 선택되었고, 바람직하게는 합성 흑연, 천연 흑연, 그래핀, 메소 탄소, 도핑된 탄소, 하드 카본, 소프트 카본, 풀러렌, 규소-탄소 복합체, 규소, 표면 코팅된 규소, 규소-아산화물, 규소 합금, 리튬, 알루미늄 합금, 인듐, 주석 합금, 코발트 합금 및 이들의 혼합물로 이루어진 군으로부터 선택된 것을 특징으로 하는, 리튬 이온 배터리.
- 제1항 내지 제7항 중 어느 한 항에 있어서, 리튬 이온 배터리의 제1 방전 과정 및/또는 충전 과정 전에 상기 음극 활성 물질은, 리튬 이온 배터리가 제1 방전 과정 및/또는 충전 과정 전에 1 내지 30%, 바람직하게는 3 내지 25%, 특히 바람직하게는 5 내지 20%의 범위 안에 있는 충전 상태(State-of-Charge: SoC)를 가질 정도로 예비 리튬화된 것을 특징으로 하는, 리튬 이온 배터리.
- 리튬 이온 배터리를 제조하기 위한 방법으로서,
- 제1 양극 활성 물질과 제2 양극 활성 물질을 혼합함으로써 복합 양극 활성 물질을 제공하는 단계로서, 제2 양극 활성 물질은 스피넬 구조를 갖는 화합물이며, 제1 양극 활성 물질은 리튬화 정도(a)를 그리고 제2 양극 활성 물질은 리튬화 정도(b)를 가지며, 그리고 제2 양극 활성 물질의 리튬화 정도(b)는 제1 양극 활성 물질의 리튬화 정도(a)보다 적은, 상기 복합 양극 활성 물질을 제공하는 단계;
- 음극 활성 물질을 제공하는 단계;
- 복합 양극 활성 물질을 양극 내에 설치하고, 음극 활성 물질을 음극 내에 설치하는 단계; 및
- 양극 및 음극을 사용해서 리튬 이온 배터리를 제조하는 단계로서, 상기 음극 활성 물질은 음극 활성 물질을 음극 내에 설치하기 전에 또는 설치한 후에 예비 리튬화되는, 상기 리튬 이온 배터리를 제조하는 단계
를 포함하는, 리튬 이온 배터리를 제조하기 위한 방법. - 제8항에 있어서, 리튬 이온 배터리를 제조하기 전에 상기 음극에 SEI가 제공되는 것을 특징으로 하는, 리튬 이온 배터리를 제조하기 위한 방법.
- 제8항 또는 제9항에 있어서, 상기 리튬 이온 배터리가 제조 단계 직후에, 제1 방전 과정 및/또는 충전 과정 전에는 1 내지 30%의 범위 안에 있는 충전 상태(SoC)를 갖는 것을 특징으로 하는, 리튬 이온 배터리를 제조하기 위한 방법.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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DE102019135049.2A DE102019135049A1 (de) | 2019-12-19 | 2019-12-19 | Lithiumionen-Batterie und Verfahren zur Herstellung einer Lithiumionen-Batterie |
DE102019135049.2 | 2019-12-19 | ||
PCT/EP2020/081471 WO2021121773A1 (de) | 2019-12-19 | 2020-11-09 | Lithiumionen-batterie und verfahren zur herstellung einer lithiumionen-batterie |
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KR20220062034A true KR20220062034A (ko) | 2022-05-13 |
KR102812961B1 KR102812961B1 (ko) | 2025-05-26 |
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US (1) | US20220416226A1 (ko) |
JP (1) | JP2023506031A (ko) |
KR (1) | KR102812961B1 (ko) |
CN (1) | CN114556617B (ko) |
DE (1) | DE102019135049A1 (ko) |
WO (1) | WO2021121773A1 (ko) |
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