KR20210011432A - 고 에너지 밀도 조성-경사 전극들 및 그 제작 방법들 - Google Patents
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Abstract
Description
도 2는 한 실시예에 따른 다층 전극의 개략도이다.
도 3은 한 실시예에 따른 팽창 영역을 포함하는 다층 전극의 개략도이다.
도 4는 한 실시예에 따른 다층 전극의 개략도이다.
도 5는 한 실시예에 따른 다층 전극의 개략도이다.
도 6은 다층 전극을 갖는 반쪽 전지 거동의 그래픽 표현이다.
도 7은 다층 전극을 갖는 전지의 충전 및 방전 곡선의 그래픽 표현이다.
도 8은 다층 전극을 갖는 전지의 충전 및 방전 곡선의 그래픽 표현이다.
도 9는 다층 전극을 갖는 전지의 충전 및 방전 곡선의 그래픽 표현이다.
도 10은 다층 전극을 갖는 전지의 용량 유지의 그래픽 표현이다.
도 11은 다층 전극을 갖는 전지의 용량 유지의 그래픽 표현이다.
도 12는 다층 전극을 갖는 전지의 용량 유지의 그래픽 표현이다.
도 13은 다층 전극을 갖는 전지의 수명 시작 대 수명 종료 용량 사이의 비교의 그래픽 표현이다.
도 14는 다층 전극을 갖는 전지의 충전 및 방전 곡선의 그래픽 표현이다.
도 15는 다층 전극을 갖는 전지의 충전 및 방전 곡선의 그래픽 표현이다.
Claims (38)
- 전극으로서,
집전체;
상기 집전체 상에 배치되고 제1 공극율을 갖는 제1 전극 재료; 및
상기 제1 전극 재료 상에 배치되고 상기 제1 공극율보다 큰 제2 공극율을 갖는 제2 전극 재료
를 포함하고,
상기 제2 전극 재료는 액체 전해질 내의 활성 재료와 전도성 재료의 혼합물을 포함하는, 전극. - 제1항에 있어서, 상기 제1 공극율은 5% 미만인, 전극.
- 제1항에 있어서, 상기 제1 공극율은 약 30% 내지 약 60%인, 전극.
- 제1항에 있어서, 상기 제2 공극율은 약 30% 내지 약 60%인, 전극.
- 제1항에 있어서, 상기 전극은 적어도 200 mAh/g의 비용량(specific capacity)을 갖는, 전극.
- 제1항에 있어서, 상기 제1 전극 재료는, 주석, 실리콘, 안티모니, 알루미늄, 및 티타늄 산화물로부터 선택된 고용량 재료를 포함하는, 전극.
- 전극으로서,
집전체;
상기 집전체 상에 배치되고 제1 에너지 밀도를 갖는 제1 전극 재료; 및
상기 제1 전극 재료 상에 배치되고 상기 제1 에너지 용량보다 작은 제2 에너지 밀도를 갖는 제2 전극 재료
를 포함하고,
상기 제2 전극 재료는 액체 전해질 내의 활성 재료와 전도성 재료의 혼합물을 포함하는, 전극. - 제7항에 있어서, 상기 제1 전극 재료는 고체 고용량 전극 층(solid high-capacity electrode layer)을 포함하는, 전극.
- 제8항에 있어서, 상기 고체 고용량 층은 실리콘을 포함하는, 전극.
- 제8항에 있어서, 상기 고체 고용량 층은 주석을 포함하는, 전극.
- 제7항에 있어서, 상기 전극은 약 150 내지 2,000 μm의 두께를 갖는, 전극.
- 제7항에 있어서, 상기 제1 전극 재료는 약 1 μm 내지 약 80 μm의 두께를 갖는, 전극.
- 제7항에 있어서, 상기 제1 전극 재료는 상기 전극의 총 두께의 약 10% 미만인 두께를 갖는, 전극.
- 제7항에 있어서, 상기 제2 전극 재료는 상기 전극의 총 두께의 적어도 약 80%인 두께를 갖는, 전극.
- 제7항에 있어서, 상기 제2 전극 재료는 적어도 약 150 μm의 두께를 갖는, 전극.
- 제7항에 있어서, 상기 제1 전극 재료는 복합 고용량 전극 층을 포함하는, 전극.
- 제16항에 있어서, 상기 복합 고용량 전극 층은 약 10 % 내지 약 20 %의 고용량 재료의 부피를 포함하는, 전극.
- 제7항에 있어서,
상기 제1 전극 재료와 상기 제2 전극 재료 사이에 배치된 리튬-함유 재료를 더 포함하는 전극. - 제7항에 있어서, 상기 전극의 공극율은 전극 두께를 가로질러 변화하는, 전극.
- 전극으로서,
집전체;
상기 집전체 상에 배치되고 제1 표면적을 갖는 제1 전극 재료; 및
상기 제1 전극 재료 상에 배치되고 상기 제1 표면적보다 큰 제2 표면적을 갖는 제2 전극 재료
를 포함하고,
상기 제2 전극 재료는 액체 전해질 내의 활성 재료와 전도성 재료의 혼합물을 포함하는, 전극. - 제20항에 있어서, 상기 제1 전극 재료는 고체 고용량 전극 층을 포함하는, 전극.
- 제21항에 있어서, 상기 고체 고용량 층은 실리콘을 포함하는, 전극.
- 제21항에 있어서, 상기 고체 고용량 층은 주석을 포함하는, 전극.
- 제20항에 있어서, 상기 전극은 약 150 내지 2,000 μm의 두께를 갖는, 전극.
- 제20항에 있어서, 상기 제1 전극 재료는 약 1 μm 내지 약 80 μm의 두께를 갖는, 전극.
- 제20항에 있어서, 상기 제1 전극 재료는 상기 전극의 총 두께의 약 10% 미만인 두께를 갖는, 전극.
- 제20항에 있어서, 상기 제2 전극 재료는 상기 전극의 총 두께의 적어도 약 80%인 두께를 갖는, 전극.
- 제20항에 있어서, 총 전극 두께는 적어도 약 150 μm인, 전극.
- 제20항에 있어서, 상기 제1 전극 재료는 복합 고용량 전극 층을 포함하는, 전극.
- 제29항에 있어서, 상기 복합 고용량 전극 층은 약 10 % 내지 약 20 %의 고용량 재료의 부피를 포함하는, 전극.
- 제20항에 있어서,
상기 제1 전극 재료와 상기 제2 전극 재료 사이에 배치된 리튬-함유 재료를 더 포함하는 전극. - 제20항에 있어서, 상기 이론적 에너지 밀도는 상기 전극 두께를 가로질러 변화하는, 전극.
- 제20항에 있어서, 전극의 공극율은 전극 두께를 가로질러 변화하는, 전극.
- 전극을 형성하는 방법으로서,
고용량 재료를 포함하는 제1 전극 재료를 집전체 상에 스퍼터링하는 단계; 및
제2 전극 재료를 상기 제1 전극 재료 상에 배치하는 단계
를 포함하고, 상기 제2 전극 재료는 액체 전해질 내의 활성 재료와 전도성 재료의 혼합물을 포함하는, 방법. - 제34항에 있어서,
상기 제1 전극 재료와 상기 제2 전극 재료 사이에 리튬-함유 재료를 배치하는 단계를 더 포함하는 방법. - 제34항에 있어서, 상기 고용량 재료는, 주석, 실리콘, 안티모니, 알루미늄, 및 티타늄 산화물로부터 선택되는, 방법.
- 제34항에 있어서, 제1 전극 재료는 제1 공극율을 갖고, 상기 제2 전극 재료는 제2 공극율을 가지며, 상기 제2 공극율은 상기 제1 공극율보다 큰, 방법.
- 제34항에 있어서, 상기 제1 전극 재료는 제1 에너지 밀도를 갖고, 상기 제2 전극 재료는 제2 에너지 밀도를 가지며, 상기 제2 에너지 밀도는 상기 제1 에너지 밀도보다 작은, 방법.
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US201862676049P | 2018-05-24 | 2018-05-24 | |
US62/676,049 | 2018-05-24 | ||
PCT/US2019/033965 WO2019227016A1 (en) | 2018-05-24 | 2019-05-24 | High energy-density composition-gradient electrodes and methods of making the same |
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JP (2) | JP7535948B2 (ko) |
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Cited By (1)
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WO2023229299A1 (ko) * | 2022-05-24 | 2023-11-30 | 주식회사 엘지화학 | 리튬 이차 전지용 전극, 이의 제조 방법 및 이를 포함하는 리튬 이차 전지 |
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US9401501B2 (en) | 2012-05-18 | 2016-07-26 | 24M Technologies, Inc. | Electrochemical cells and methods of manufacturing the same |
US9362583B2 (en) | 2012-12-13 | 2016-06-07 | 24M Technologies, Inc. | Semi-solid electrodes having high rate capability |
EP3694032B1 (en) | 2013-03-15 | 2023-01-11 | 24M Technologies, Inc. | Asymmetric battery having a semi-solid cathode and high energy density anode |
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