KR100399785B1 - 겔형 고분자 전해질을 포함하는 권취형 리튬 2차 전지용세퍼레이터 및 그 제조방법 - Google Patents
겔형 고분자 전해질을 포함하는 권취형 리튬 2차 전지용세퍼레이터 및 그 제조방법 Download PDFInfo
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Abstract
Description
세퍼레이터 | 표준충방전(mAh)용량* | 0.5C(25℃) | 1C(25℃) | 2C(25℃) | 2C(-20℃) | 전해액 | |
PVDF-PVC | 51.8 | 44.5 | 44.7 | 42.4 | 29.3 | 25.7 | 1.3M LiPF6in EC/DEC(3:7) |
55.8 | 51.2 | 50.3 | 48.4 | 32.1 | 28.9 | ||
50.5 | 46.8 | 46.9 | 44.9 | 25.9 | 24.3 | ||
50.0 | 44.7 | 45.0 | 42.9 | 28.3 | 29.6 | ||
50.2 | 47.2 | 46.9 | 44.5 | 29.6 | 27.4 | ||
평균 | 51.7 | 46.9 | 46.8(99.8%) | 41.6(95.1%) | 29.0(61.8%) | 27.2(57.9%) | |
폴리에틸렌 | 49.8 | 48.6 | 47.9(98.5%) | 46.2(95.1%) | 29.4(60.1%) | 25.9(53.3%) | |
*: 0.2C 충전/0.2C 방전(4.2V-2.75V) 화성조건백분율은 표준 조건에 대한 것이다. |
Claims (9)
- 폴리비닐클로라이드 단독으로 또는 폴리비닐클로라이드와 폴리비닐리덴플루오라이드, 비닐리덴플루오라이드/헥사플루오로프로필렌 공중합체, 폴리메타아크릴레이트, 폴리아크릴로니트릴 및 폴리에틸렌옥사이드로 이루어진 군으로부터 선택되는 하나 이상과의 혼합물로 형성된 매트릭스를 포함하는 것을 특징으로 하는 겔형 고분자 전해질을 포함하는 권취형 리튬 2차 전지용 다공성 세퍼레이터.
- 제 1항에 있어서, 상기 매트릭스가 세퍼레이터의 기계적 강도 및 이온 전도도를 향상시킬 수 있는 무기 충진제를 더 포함하는 것을 특징으로 하는 세퍼레이터.
- 제 1항 또는 2항에 있어서, 상기 매트릭스가 고율 충방전 성능 및 저온에서의 전지 성능을 향상시킬 수 있는 Al2O3또는 Li2CO3를 더 포함하는 것을 특징으로 하는 세퍼레이터.
- (a) 폴리비닐클로라이드 또는 폴리비닐클로라이드와 폴리비닐리덴플루오라이드, 비닐리덴플루오라이드/헥사플루오로프로필렌 공중합체, 폴리메타아크릴레이트, 폴리아크릴로니트릴 및 폴리에틸렌옥사이드로 이루어진 군으로부터 선택되는 하나 이상과의 혼합물 및 가소제를 캐스팅 용매에 용해시키는 단계;(b) 상기 (a) 단계의 결과물을 지지체에 캐스팅하는 단계;(c) 상기 (b) 단계의 결과물을 건조하여 캐스팅 용매를 제거하여 지지체 상에 필름을 형성시키는 단계; 및(d) 상기 (c) 단계에서 형성되는 필름을 지지체로부터 분리하는 단계를 포함하는 것을 특징으로 하는 겔형 고분자 전해질을 포함하는 권취형 리튬 2차 전지용 다공성 세퍼레이터 제조방법.
- 제 4항에 있어서, 상기 가소제가 에틸렌 카보네이트, 프로필렌 카보네이트, 디메틸 카보네이트, 디에톡시에탄, 디부틸 프탈레이트, 디메톡시에탄, 디에틸 카보네이트, 디프로필 카보네이트 및 비닐리덴 카보네이트로 이루어진 군에서 선택되는어느 하나 이상인 것을 특징으로 하는 세퍼레이터 제조방법.
- 제 4항에 있어서, 상기 (a) 단계에서 제조되는 용액에 세퍼레이터의 기계적 강도 및 이온 전도도를 향상시킬 수 있는 무기 충진제를 분산시키는 단계를 더 포함하는 것을 특징으로 하는 세퍼레이터 제조방법.
- 제 4항에 있어서, 상기 (a) 단계에서 제조되는 용액에 고율 충방전 성능 및 저온에서의 전지 성능을 향상시킬 수 있는 Al2O3또는 Li2CO3를 분산시키는 단계를 더 포함하는 것을 특징으로 하는 세퍼레이터 제조방법.
- 삭제
- 제 4항에 있어서, 상기 (d) 단계에서 얻은 필름을 가소제 추출 용매에 넣어 가소제를 추출하여 공극을 생성시키는 단계를 더 포함하는 것을 특징으로 하는 세퍼레이터 제조방법.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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KR10-2001-0018471A KR100399785B1 (ko) | 2001-04-07 | 2001-04-07 | 겔형 고분자 전해질을 포함하는 권취형 리튬 2차 전지용세퍼레이터 및 그 제조방법 |
US10/114,311 US6924065B2 (en) | 2001-04-07 | 2002-04-03 | Separators for winding-type lithium secondary batteries having gel-type polymer electrolytes and manufacturing method for the same |
JP2002101572A JP4482265B2 (ja) | 2001-04-07 | 2002-04-03 | ゲル状高分子電解質を含む巻取型リチウム2次電池用セパレータの製造方法 |
CNB021205728A CN1242498C (zh) | 2001-04-07 | 2002-04-05 | 用于具有凝胶型聚合物电解质的缠绕型锂二次电池的隔膜及其制备方法 |
US11/166,084 US7736810B2 (en) | 2001-04-07 | 2005-06-27 | Separators for winding-type lithium secondary batteries having gel-type polymer electrolytes and manufacturing method for the same |
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KR10-2001-0018471A KR100399785B1 (ko) | 2001-04-07 | 2001-04-07 | 겔형 고분자 전해질을 포함하는 권취형 리튬 2차 전지용세퍼레이터 및 그 제조방법 |
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KR20020078660A KR20020078660A (ko) | 2002-10-19 |
KR100399785B1 true KR100399785B1 (ko) | 2003-09-29 |
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US9385358B2 (en) | 2012-07-25 | 2016-07-05 | Samsung Sdi Co., Ltd. | Separator for rechargeable lithium battery, and rechargeable lithium battery including the same |
US9761854B2 (en) | 2013-12-13 | 2017-09-12 | Samsug SDI Co., Ltd. | Spirally-wound electrode assembly for rechargeable lithium battery and rechargeable lithium battery including same |
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KR20030065089A (ko) * | 2002-01-29 | 2003-08-06 | 주식회사 뉴턴에너지 | 섬유상의 격리막 및 이를 포함하는 에너지 저장 장치 |
KR20030065074A (ko) * | 2002-01-29 | 2003-08-06 | 주식회사 뉴턴에너지 | 전기화학셀 및 이의 제조방법 |
WO2005029614A1 (ja) * | 2003-09-18 | 2005-03-31 | Matsushita Electric Industrial Co., Ltd. | リチウムイオン二次電池 |
KR100895196B1 (ko) * | 2004-09-02 | 2009-04-24 | 주식회사 엘지화학 | 유/무기 복합 다공성 필름 및 이를 이용한 전기 화학 소자 |
EP3745494A1 (en) * | 2004-09-02 | 2020-12-02 | Lg Chem, Ltd. | Organic/inorganic composite porous film and electrochemical device prepared thereby |
JP2006338917A (ja) * | 2005-05-31 | 2006-12-14 | Tomoegawa Paper Co Ltd | 電子部品用セパレータおよび電子部品 |
JP5207631B2 (ja) * | 2007-01-31 | 2013-06-12 | 三洋電機株式会社 | 非水電解質二次電池 |
KR100966024B1 (ko) | 2007-04-24 | 2010-06-24 | 주식회사 엘지화학 | 이종의 세퍼레이터를 구비한 전기화학소자 |
US20090176160A1 (en) * | 2007-06-06 | 2009-07-09 | Aron Newman | Electroactive separator for overcharge protection |
WO2009096451A1 (ja) * | 2008-01-29 | 2009-08-06 | Hitachi Maxell, Ltd. | 絶縁層形成用スラリー、電気化学素子用セパレータおよびその製造方法、並びに電気化学素子 |
JP2010108732A (ja) * | 2008-10-30 | 2010-05-13 | Hitachi Ltd | リチウム二次電池 |
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Also Published As
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KR20020078660A (ko) | 2002-10-19 |
US6924065B2 (en) | 2005-08-02 |
US20050238962A1 (en) | 2005-10-27 |
CN1381911A (zh) | 2002-11-27 |
JP4482265B2 (ja) | 2010-06-16 |
US7736810B2 (en) | 2010-06-15 |
JP2002359005A (ja) | 2002-12-13 |
US20020192561A1 (en) | 2002-12-19 |
CN1242498C (zh) | 2006-02-15 |
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