KR102815445B1 - 전고체 리튬 이차 전지 - Google Patents
전고체 리튬 이차 전지 Download PDFInfo
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- KR102815445B1 KR102815445B1 KR1020220137576A KR20220137576A KR102815445B1 KR 102815445 B1 KR102815445 B1 KR 102815445B1 KR 1020220137576 A KR1020220137576 A KR 1020220137576A KR 20220137576 A KR20220137576 A KR 20220137576A KR 102815445 B1 KR102815445 B1 KR 102815445B1
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Abstract
Description
도 2는 일 구현예에 따른 전고체 전지를 충전 후 상태를 나타낸 개략적 단면도.
도 3은 실시예 1에 따라 제조된 음극의 표면 SEM 사진.
도 4는 실시예 1에 따라 제조된 음극에 대한 EDAX 측정 결과를 나타낸 그래프.
도 5는 도 3의 SEM 사진을 20,000 배 확대하여 나타낸 사진.
도 6은 도 5의 selected area 1 및 selected area 2에 대한 EDAX 측정 결과를 나타낸 그래프.
| 바인더(중량%) | 카본블랙(중량%) | Ag(중량%) | Nb2O5(중량%) | N/P ratio | |
| 실시예 1 | 8 | 86 | 5 | 1 | 0.15 |
| 실시예 2 | 8 | 85 | 4 | 3 | 0.14 |
| 실시예 3 | 8 | 83 | 4 | 5 | 0.16 |
| 실시예 4 | 8 | 78 | 4 | 10 | 0.17 |
| 실시예 5 | 8 | 64 | 3 | 25 | 0.12 |
| 실시예 6 | 8 | 59 | 3 | 30 | 0.12 |
| 실시예 7 | 8 | 82 | 0 | 10 | 0.12 |
| 실시예 8 | 8 | 62 | 0 | 30 | 0.11 |
| 비교예 1 | 8 | 87 | 4.2 | 0.8 | 0.15 |
| 비교예 2 | 8 | 57 | 3 | 32 | 0.13 |
| 비교예 3 | 8 | 40 | 2 | 50 | 0.12 |
| 비교예 4 | 8 | 60 | 0 | 32 | 0.12 |
| 비교예 5 | 8 | 86 | 5 | 1 | 0.09 |
| 비교예 6 | 8 | 86 | 5 | 1 | 0.5 |
| 비교예 7 | 8 | 59 | 3 | 30 | 0.09 |
| 비교예 8 | 8 | 59 | 3 | 30 | 0.5 |
| 전극 특성 | 전기화학성능 | ||||
| 전기저항(10-2 Ω cm) | 표면거칠기(㎛) | 과전압(mV) | 초기효율(%) | 출력 효율(%) | |
| 실시예 1 | 5.11 | 0.30 | 14.2 | 86.3 | 94.4 |
| 실시예 2 | 5.14 | 0.30 | 14.2 | 86.2 | 94.2 |
| 실시예 3 | 5.23 | 0.32 | 13.7 | 88.7 | 94.8 |
| 실시예 4 | 5.42 | 0.36 | 13.3 | 88.2 | 96.5 |
| 실시예 5 | 6.03 | 0.45 | 13.8 | 88.3 | 96.5 |
| 실시예 6 | 6.21 | 0.44 | 13.8 | 86.6 | 94.9 |
| 실시예 7 | 5.63 | 0.37 | 14.8 | 88.0 | 95.8 |
| 실시예 8 | 6.25 | 0.48 | 15.8 | 86.0 | 94.2 |
| 비교예 1 | 5.10 | 0.29 | 14.3 | 85.9 | 단락(short) |
| 비교예 2 | 6.50 | 0.52 | 15.6 | 84.2 | 단락(short) |
| 비교예 3 | 7.10 | 0.59 | 18.6 | 83.1 | 단락(short) |
| 비교예 4 | 6.58 | 0.53 | 16.5 | 83.9 | 단락(short) |
| 비교예 5 | 5.33 | 0.42 | 13.5 | 85.9 | 87.9 |
| 비교예 6 | -(측정 불가) | 0.89 | 20.1 | 52.3 | 단락(short) |
| 비교예 7 | 6.06 | 0.44 | 14.9 | 84.7 | 87.2 |
| 비교예 8 | -(측정 불가) | 0.99 | 24.0 | 57.8 | 단락(short) |
Claims (13)
- 양극 활물질을 포함하는 양극 활물질층을 포함하는 양극;
음극 촉매 및 Nb2O5를 포함하는 음극 촉매층을 포함하는 음극; 및
전해질층을 포함하고,
상기 Nb2O5의 함량은 상기 음극 촉매층 전체 100 중량%에 대하여 1 중량% 내지 30 중량%이고,
상기 양극의 용량에 대한 상기 음극 촉매층의 용량 비율(N/P)은 0.1 이상, 0.5 미만이고,
상기 음극 촉매는 탄소계 물질, 금속 입자 또는 이들의 조합인 전고체 리튬 이차 전지. - 제1항에 있어서,
상기 Nb2O5의 함량은 상기 음극 촉매층 전체 100 중량%에 대하여 3 중량% 내지 30 중량%인 전고체 리튬 이차 전지. - 제1항에 있어서,
상기 Nb2O5의 함량은 상기 음극 촉매층 전체 100 중량%에 대하여 5 중량% 내지 15 중량%인 전고체 리튬 이차 전지. - 제1항에 있어서,
상기 양극의 용량에 대한 상기 음극 촉매층의 용량 비율(N/P)은 0.1 내지 0.4인 전고체 리튬 이차 전지. - 제1항에 있어서,
상기 양극의 용량에 대한 상기 음극 촉매층의 용량 비율(N/P)은 0.1 내지 0.3인 전고체 리튬 이차 전지. - 삭제
- 제1항에 있어서,
상기 탄소계 물질은 비정질 탄소인 전고체 리튬 이차 전지. - 제1항에 있어서,
상기 금속 입자는 Ag, Zn, Al, Sn, Mg, Ge, Cu, In, Ni, Bi, Au, Si, Pt, Pd 및 이들의 조합에서 선택되는 어느 하나인 전고체 리튬 이차 전지. - 제1항에 있어서,
상기 전해질층은 고체 전해질을 포함하는 것인 전고체 리튬 이차 전지. - 제9항에 있어서,
상기 고체 전해질은 황화물계 고체 전해질, 산화물계 고체 전해질, 할라이드계 고체 전해질 또는 고체 고분자 전해질인 전고체 리튬 이차 전지. - 제1항에 있어서,
상기 음극은 상기 음극 촉매층을 지지하는 전류 집전체를 더욱 포함하고,
초기 충전시 상기 전류 집전체와 상기 음극 촉매층 사이에 형성된 리튬 석출층을 더욱 포함하는 것인 전고체 리튬 이차 전지. - 제1항에 있어서,
상기 양극 활물질은 리튬 이온을 가역적으로 흡장 및 방출할 수 있는 양극 활물질 또는 황계 화합물인 전고체 리튬 이차 전지. - 제12항에 있어서,
상기 양극 활물질은 리튬 이온을 가역적으로 흡장 및 방출할 수 있는 양극 활물질인 전고체 리튬 이차 전지.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020220137576A KR102815445B1 (ko) | 2022-10-24 | 2022-10-24 | 전고체 리튬 이차 전지 |
| PCT/KR2023/008795 WO2024090706A1 (ko) | 2022-10-24 | 2023-06-23 | 전고체 전지 |
| CN202380075215.7A CN120113059A (zh) | 2022-10-24 | 2023-06-23 | 全固态电池 |
| EP23882814.9A EP4611055A1 (en) | 2022-10-24 | 2023-06-23 | All-solid-state battery |
| US18/380,778 US20240186569A1 (en) | 2022-10-24 | 2023-10-17 | All solid-state battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020220137576A KR102815445B1 (ko) | 2022-10-24 | 2022-10-24 | 전고체 리튬 이차 전지 |
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| Publication Number | Publication Date |
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| KR20240057173A KR20240057173A (ko) | 2024-05-02 |
| KR102815445B1 true KR102815445B1 (ko) | 2025-05-29 |
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| US (1) | US20240186569A1 (ko) |
| EP (1) | EP4611055A1 (ko) |
| KR (1) | KR102815445B1 (ko) |
| CN (1) | CN120113059A (ko) |
| WO (1) | WO2024090706A1 (ko) |
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| CN120613430A (zh) * | 2025-08-12 | 2025-09-09 | 浙江绿色智行科创有限公司 | 全固态电池及其制备方法和应用 |
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| CA2722188A1 (en) * | 2007-07-31 | 2009-02-05 | Showa Denko K.K. | Metal oxide electrode catalyst, use thereof, and method for producing metal oxide electrode catalyst |
| EP2475034B1 (en) * | 2010-12-23 | 2020-11-25 | Greenerity GmbH | Membrane electrode assemblies for PEM fuel cells |
| US9112221B2 (en) * | 2012-08-14 | 2015-08-18 | Samsung Sdi Co., Ltd. | Composite anode active material, anode and lithium battery comprising the material, and method of preparing the same |
| JP7050419B2 (ja) * | 2017-02-07 | 2022-04-08 | 三星電子株式会社 | 全固体型二次電池用負極及び全固体型二次電池 |
| KR102312990B1 (ko) * | 2018-11-02 | 2021-10-13 | 삼성전자주식회사 | 전고체 이차전지 및 이의 제작방법 |
| KR102682128B1 (ko) * | 2018-11-07 | 2024-07-08 | 삼성전자주식회사 | 전고체전지용 무음극 코팅층 및 이를 포함하는 전고체전지 |
| KR20200081305A (ko) * | 2018-12-26 | 2020-07-07 | 한양대학교 산학협력단 | 입자를 구비하는 전극, 이의 제조방법, 및 리튬 이차전지 |
| KR20200115999A (ko) * | 2019-03-29 | 2020-10-08 | 삼성전자주식회사 | 전고체 리튬 2차 전지 및 그 충전 방법 |
| KR102857651B1 (ko) * | 2020-09-09 | 2025-09-08 | 삼성에스디아이 주식회사 | 전고체 전지 |
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- 2022-10-24 KR KR1020220137576A patent/KR102815445B1/ko active Active
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- 2023-06-23 EP EP23882814.9A patent/EP4611055A1/en active Pending
- 2023-06-23 WO PCT/KR2023/008795 patent/WO2024090706A1/ko not_active Ceased
- 2023-06-23 CN CN202380075215.7A patent/CN120113059A/zh active Pending
- 2023-10-17 US US18/380,778 patent/US20240186569A1/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| Shan Yi et al., In Situ Formed Lithiophilic LixNbyO in a Carbon Nanofiber Networkfor Dendrite-Free Li-Metal Anodes, ACS Appl. Mater. Interfaces 2021, 13, 56498-56509 (2021.11.16.) |
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| Publication number | Publication date |
|---|---|
| EP4611055A1 (en) | 2025-09-03 |
| CN120113059A (zh) | 2025-06-06 |
| US20240186569A1 (en) | 2024-06-06 |
| WO2024090706A1 (ko) | 2024-05-02 |
| KR20240057173A (ko) | 2024-05-02 |
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