KR101984719B1 - 다층구조의 리튬금속 전극 및 이의 제조방법 - Google Patents
다층구조의 리튬금속 전극 및 이의 제조방법 Download PDFInfo
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Abstract
본 발명의 다층구조의 리튬금속 전극은 보호층의 형성으로 리튬금속의 수분이나 전지내 환경에서의 반응성을 보호하고 덴드라이트 형성을 방지할 수 있다. 또한, 버퍼층의 형성으로 보호층의 형성과정에서 리튬금속판 상에 산화물층이 형성되어 이온전도도가 저하될 수 있는 문제를 방지한다.
Description
도 2는 본 발명의 일 실시예에 따른 다층구조의 리튬금속 전극의 제조방법의 순서도이다.
도 3은 실시예 1에서 제조된 LiBON 박막의 표면에 대한 주사전자현미경(SEM) 사진이다.
도 4는 비교예 4에서 제조된 LiPON 박막의 표면에 대한 주사전자현미경(SEM) 사진이다.
| Li 금속 산화 여부 | LiBON/LiPON 박막의 크랙(crack) 여부 | Li 사이클 효율(%) | |
| 실시예 1 | X | X | 91 |
| 실시예 2 | X | X | 81 |
| 실시예 3 | △ | △ | 69 |
| 실시예 4 | X | X | 73 |
| 실시예 5 | X | X | 75 |
| 실시예 6 | X | X | 89 |
| 실시예 7 | X | X | 87 |
| 비교예 1 | 없음 | 없음 | 68 |
| 비교예 2 | X | 없음 | 70 |
| 비교예 3 | O | O | 측정 불가 |
| 비교예 4 | X | O | 69 |
| 비교예 5 | X | O | 68 |
| 비교예 6 | X | O | 71 |
1210: 버퍼층 1220: 보호층
Claims (9)
- 리튬 금속판;
상기 리튬 금속판 상에 형성된 질화리튬(Li3N)으로 이루어진 버퍼층; 및
상기 버퍼층 상에 형성되고 하기 화학식 1의 조성을 갖는 LiBON으로 이루어진 보호층을 포함하는, 다층구조의 리튬금속 전극:
LixBOyNz 식(1)
(상기 x는 0.9 내지 3.51, y는 0.6 내지 3.2, z는 0.5 내지 1.0임.) - 제1항에 있어서,
상기 버퍼층은 리튬 금속판의 전해질과 대면하는 면에 형성되는 것을 특징으로 하는, 다층구조의 리튬금속 전극. - 제1항에 있어서,
상기 화학식 1의 조성을 갖는 LiBON은 Li3 . 09BO2 . 53N0 .52, Li0 . 90BO0 . 66N0 .98, 및 Li3.51BO3.03N0.52로 이루어진 군에서 선택되는 어느 하나인 것을 특징으로 하는, 다층구조의 리튬금속 전극. - 제1항 또는 제2항에 있어서,
상기 리튬 금속판의 두께는 30 내지 500㎛인 것을 특징으로 하는, 다층구조의 리튬금속 전극. - 제1항 또는 제2항에 있어서,
상기 버퍼층인 질화리튬층의 두께는 0.01 내지 5㎛인 것을 특징으로 하는, 다층구조의 리튬금속 전극. - 제1항 또는 제2항에 있어서,
상기 보호층인 LiBON층의 두께는 0.1 내지 10㎛인 것을 특징으로 하는, 다층구조의 리튬금속 전극. - 제1항에 있어서,
상기 질화리튬 버퍼층 또는 LiBON 보호층은 전자빔 증착법, 유기금속 화학 기상 증착법, 반응성 스퍼터링, 고주파 스퍼터링법, 및 마그네트론 스퍼터링법 중 선택된 방법으로 형성되는 것을 특징으로 하는, 다층구조의 리튬금속 전극. - 진공챔버 내에 리튬 금속판을 제공하는 단계;
상기 리튬 금속판의 일면 또는 양면에 질소(N2) 가스 반응성 스퍼터링법으로 질화리튬(Li3N) 박막을 형성하는 단계; 및
상기 질화리튬 박막에 연속하여 질소(N2) 가스 반응성 스퍼터링법으로 하기 화학식 1의 조성을 갖는 LiBON 박막을 형성하는 단계;
를 포함하는, 다층구조의 리튬금속 전극의 제조방법:
LixBOyNz 식(1)
(상기 x는 0.9 내지 3.51, y는 0.6 내지 3.2, z는 0.5 내지 1.0임.) - 음극, 양극, 및 상기 양극과 음극 사이에 개재되는 전해질을 포함하고, 상기 음극은 제1항에 따른 다층구조의 리튬전극인, 리튬 이차전지.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201580049923.9A CN106716690B (zh) | 2014-10-23 | 2015-10-21 | 多层结构锂金属电极及其制造方法 |
| US15/507,641 US10147942B2 (en) | 2014-10-23 | 2015-10-21 | Multi-layer structured lithium metal electrode and method for manufacturing same |
| EP15852801.8A EP3179539B1 (en) | 2014-10-23 | 2015-10-21 | Multi-layer structured lithium metal electrode and method for manufacturing same |
| PCT/KR2015/011145 WO2016064187A1 (ko) | 2014-10-23 | 2015-10-21 | 다층구조의 리튬금속 전극 및 이의 제조방법 |
| JP2017501356A JP6357728B2 (ja) | 2014-10-23 | 2015-10-21 | 多層構造のリチウム金属電極及びその製造方法 |
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| KR1020170089556A Withdrawn KR20170086003A (ko) | 2014-10-23 | 2017-07-14 | 다층구조의 리튬금속 전극 및 이의 제조방법 |
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| KR102796272B1 (ko) | 2024-11-25 | 2025-04-16 | 성일하이텍 주식회사 | 폐리튬금속전지의 리튬 재활용방법 |
| KR102820777B1 (ko) | 2024-11-06 | 2025-06-16 | 성일하이텍 주식회사 | 폐리튬금속전지의 리튬의 수분 반응성 차단방법 |
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2015
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- 2015-10-21 EP EP15852801.8A patent/EP3179539B1/en active Active
- 2015-10-21 JP JP2017501356A patent/JP6357728B2/ja active Active
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2017
- 2017-07-14 KR KR1020170089556A patent/KR20170086003A/ko not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR102820777B1 (ko) | 2024-11-06 | 2025-06-16 | 성일하이텍 주식회사 | 폐리튬금속전지의 리튬의 수분 반응성 차단방법 |
| KR102796272B1 (ko) | 2024-11-25 | 2025-04-16 | 성일하이텍 주식회사 | 폐리튬금속전지의 리튬 재활용방법 |
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| KR20170086003A (ko) | 2017-07-25 |
| JP2017527955A (ja) | 2017-09-21 |
| CN106716690B (zh) | 2019-12-06 |
| KR20160047991A (ko) | 2016-05-03 |
| US20170309899A1 (en) | 2017-10-26 |
| EP3179539A1 (en) | 2017-06-14 |
| US10147942B2 (en) | 2018-12-04 |
| EP3179539B1 (en) | 2018-09-12 |
| EP3179539A4 (en) | 2018-01-03 |
| JP6357728B2 (ja) | 2018-07-18 |
| CN106716690A (zh) | 2017-05-24 |
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