KR20110069747A - 전해질 첨가제를 이용한 리튬 이온 전지에서의 전해질 산화의 억제 - Google Patents
전해질 첨가제를 이용한 리튬 이온 전지에서의 전해질 산화의 억제 Download PDFInfo
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Abstract
Description
도 2는 전해질의 유무에 따른 전해질의 사이클링 성능을 나타내는 도면이고;
도 3은 캐소드의 EIS 임피던스를 나타내는 도면이고;
도 4는 사이클링된 캐소드의 XPS 스펙트럼의 챠트이고; 또한
도 5는 사이클링된 캐소드의 FTIR-ATR 스펙트럼이다.
Claims (14)
- 리튬 이온 전지에 사용되는 리튬 이온 전지 전해질로서:
유기 카보네이트, 에테르 또는 에스테르 용제의 혼합물에 용해된 LiPF6, LiBF4, LiB(C2O4)2 또는 관련 염과 함께 저농도의 산화적으로 불안정한 첨가제를 포함하여 상기 첨가제가 캐소드 입자의 표면과 반응하여 캐소드에 의한 전해질의 산화를 방지하는 패시베이션막을 생성하는 것을 특징으로 하는 리튬 이온 전지 전해질. - 제 1 항에 있어서,
상기 첨가제는 2,3-디히드로푸란(2,3-DHF), 2,5-디히드로푸란(2,5-DHF), 비닐렌 카보네이트(VC), 비닐트리메톡시실란(VTMS), 디메틸비닐렌 카보네이트(DMVC) 및 γ-부티로락톤, 또는 관련 불포화 에테르, 에스테르 또는 카보네이트에서 선택되는 중합성 유기분자인 것을 특징으로 하는 리튬 이온 전지 전해질. - 제 2 항에 있어서,
상기 첨가제 농도는 0.01~10중량%인 것을 특징으로 하는 리튬 이온 전지 전해질. - 제 3 항에 있어서,
상기 첨가제 농도는 0.05~5중량%인 것을 특징으로 하는 리튬 이온 전지 전해질. - 제 1 항에 있어서,
상기 첨가제는 티타늄 테트라메톡시드, 티타늄 테트라에톡시드, 티타늄 테트라이소프로폭시드, 알루미늄 트리메톡시드, 알루미늄 트리에톡시드, 알루미늄 트리이소프로폭시드, 트리메틸보레이트, 트리에틸보레이트, 트리이소프로필 보레이트, 테트라메틸 오르토실리케이트, 테트라에틸 오르토실리케이트, 테트라이소프로필 오르토실리케이트, 및 관련된 티타늄 테트라알콕시드, 트리알킬 보레이트, 알루미늄 트리알콕시드 및 테트라알킬 오르토실리케이트로 이루어진 군에서 선택되는 무기분자인 것을 특징으로 하는 리튬 이온 전지 전해질. - 제 5 항에 있어서,
상기 첨가제 농도는 0.01~10중량%인 것을 특징으로 하는 리튬 이온 전지 전해질. - 제 6 항에 있어서,
상기 첨가제 농도는 0.05~5중량%인 것을 특징으로 하는 리튬 이온 전지 전해질. - 제 1 항에 있어서,
상기 첨가제는 상기 캐소드 입자의 표면과 선택적으로 반응하여 새로운 캐소드 전해질 계면을 생성하는 것을 특징으로 하는 리튬 이온 전지 전해질. - 제 1 항에 있어서,
상기 활성 캐소드 재료는 LiCoO2, LiMn2O4, LiFePO4, LiNixCo1 - xO2, LiN1/3Co1/3Mn1/3O2, 및 관련 재료로 이루어진 군에서 선택되는 것을 특징으로 하는 리튬 이온 전지 전해질. - 제 1 항에 있어서,
상기 애노드 재료는 흑연, 및 기타 관련 형태의 탄소, 실리콘, 실리콘/흑연 복합재료, 리튬 금속 및 리튬 합금인 것을 특징으로 하는 리튬 이온 전지 전해질. - 애노드;
캐소드;
유기 카보네이트, 에테르 또는 에스테르 용제의 혼합물에 용해된 LiPF6, LiBF4, LiB(C2O4)2 또는 관련 염과 함께 저농도의 산화적으로 불안정한 첨가제를 포함하여 상기 첨가제가 캐소드 입자의 표면과 반응하여 상기 캐소드에 의한 전해질의 산화를 방지하는 패시베이션막을 생성하는 전해질을 포함하는 리튬 이온 전지로서:
상기 첨가제는 2,3-디히드로푸란(2,3-DHF), 2,5-디히드로푸란(2,5-DHF), 비닐렌 카보네이트(VC), 비닐트리메톡시실란(VTMS) 및 γ-부티로락톤에서 선택되는 중합성 유기분자인 것을 특징으로 하는 리튬 이온 전지. - 리튬 이온 전지를 사이클링하여 캐소드 상에 보호막을 생성하는 방법으로서:
외부 컨테이너를 제공하여 상기 리튬 이온 전지를 유지하는 공정,
입자 표면을 갖는 캐소드를 제공하는 공정,
애노드를 제공하는 공정,
세퍼레이터를 제공하는 공정을 포함하고;
전해질은 유기 카보네이트, 에테르 또는 에스테르 용제의 혼합물에 용해된 LiPF6, LiBF4, LiB(C2O4)2 또는 관련 염과 함께 저농도의 산화적으로 불안정한 첨가제를 포함하여 상기 리튬 이온 전지의 사이클링시 상기 첨가제가 캐소드 입자의 표면과 반응하여 상기 캐소드 표면 상에 상기 캐소드에 의한 전해질의 산화를 방지하는 패시베이션막을 생성하는 것을 특징으로 하는 보호막 생성방법. - 제 12 항에 있어서,
상기 첨가제는 2,3-디히드로푸란(2,3-DHF), 2,5-디히드로푸란(2,5-DHF), 비닐렌 카보네이트(VC), 비닐트리메톡시실란(VTMS), 디메틸비닐렌 카보네이트(DMVC) 및 γ-부티로락톤, 또는 관련 불포화 에테르, 에스테르 또는 카보네이트에서 선택되는 중합성 유기분자인 것을 특징으로 하는 보호막 생성방법. - 제 12 항에 있어서,
상기 세퍼레이터는 다공질 폴리에틸렌 또는 폴리프로필렌인 것을 특징으로 하는 보호막 생성방법.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US7792708P | 2008-07-03 | 2008-07-03 | |
| US61/077,927 | 2008-07-03 |
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| Publication Number | Publication Date |
|---|---|
| KR20110069747A true KR20110069747A (ko) | 2011-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| KR1020107029873A Withdrawn KR20110069747A (ko) | 2008-07-03 | 2009-07-02 | 전해질 첨가제를 이용한 리튬 이온 전지에서의 전해질 산화의 억제 |
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| Country | Link |
|---|---|
| US (1) | US20110117446A1 (ko) |
| EP (1) | EP2297802A1 (ko) |
| JP (1) | JP2011527090A (ko) |
| KR (1) | KR20110069747A (ko) |
| WO (1) | WO2010003069A1 (ko) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140099864A (ko) * | 2011-10-05 | 2014-08-13 | 원드 매터리얼 엘엘씨 | 리튬 이온 배터리용 실리콘 나노구조체 활물질, 및 그에 관련된 공정, 조성물, 구성요소 및 디바이스 |
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| KR101994261B1 (ko) * | 2012-12-12 | 2019-06-28 | 삼성에스디아이 주식회사 | 이온성 액체를 포함하는 고체 전해질 |
| US10411299B2 (en) | 2013-08-02 | 2019-09-10 | Zenlabs Energy, Inc. | Electrolytes for stable cycling of high capacity lithium based batteries |
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| EP3353844B1 (en) | 2015-03-27 | 2022-05-11 | Mason K. Harrup | All-inorganic solvents for electrolytes |
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- 2009-07-02 KR KR1020107029873A patent/KR20110069747A/ko not_active Withdrawn
- 2009-07-02 JP JP2011516876A patent/JP2011527090A/ja active Pending
- 2009-07-02 EP EP09774518A patent/EP2297802A1/en not_active Withdrawn
- 2009-07-02 WO PCT/US2009/049534 patent/WO2010003069A1/en not_active Ceased
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2010
- 2010-12-22 US US12/975,477 patent/US20110117446A1/en not_active Abandoned
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140099864A (ko) * | 2011-10-05 | 2014-08-13 | 원드 매터리얼 엘엘씨 | 리튬 이온 배터리용 실리콘 나노구조체 활물질, 및 그에 관련된 공정, 조성물, 구성요소 및 디바이스 |
| US10355266B2 (en) | 2011-10-05 | 2019-07-16 | Oned Material Llc | Silicon nanostructure active materials for lithium ion batteries and processes, compositions, components and devices related thereto |
| US10804525B2 (en) | 2011-10-05 | 2020-10-13 | Oned Material Inc. | Silicon nanostructure active materials for lithium ion batteries and processes, compositions, components, and devices related thereto |
| WO2022177253A1 (ko) * | 2021-02-17 | 2022-08-25 | (주)자이언트케미칼 | 알루미늄 실리케이트를 포함하는 이차전지 전해질용 첨가제 및 이의 제조방법 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2011527090A (ja) | 2011-10-20 |
| US20110117446A1 (en) | 2011-05-19 |
| WO2010003069A1 (en) | 2010-01-07 |
| EP2297802A1 (en) | 2011-03-23 |
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