KR20120088005A - 고밀도 전극 및 이 전극을 사용한 전지 - Google Patents
고밀도 전극 및 이 전극을 사용한 전지 Download PDFInfo
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- KR20120088005A KR20120088005A KR1020127018925A KR20127018925A KR20120088005A KR 20120088005 A KR20120088005 A KR 20120088005A KR 1020127018925 A KR1020127018925 A KR 1020127018925A KR 20127018925 A KR20127018925 A KR 20127018925A KR 20120088005 A KR20120088005 A KR 20120088005A
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Abstract
Description
Claims (39)
- 전극 활성물질 및 섬유 필라멘트 직경 1~1,000nm의 탄소섬유를 함유하고, 공극률이 25% 이하인 전극에 고체 폴리머 전해질을 함침시킴으로써 얻어지는 것을 특징으로 하는 고밀도 전극.
- 제1항에 있어서, 상기 탄소섬유는 2,000℃ 이상에서 열처리를 행한 흑연계 탄소섬유인 것을 특징으로 하는 고밀도 전극.
- 제1항 또는 제2항에 있어서, 상기 탄소섬유는 산화처리를 통해 산소함유 관능기가 도입되어 있는 표면을 갖는 흑연계 탄소섬유인 것을 특징으로 하는 고밀도 전극.
- 제1항 또는 제2항에 있어서, 상기 탄소섬유는 붕소를 0.1~100,000ppm 함유하는 흑연계 탄소섬유인 것을 특징으로 하는 고밀도 전극.
- 제1항 또는 제2항에 있어서, 상기 탄소섬유의 양이 0.05~20질량%인 것을 특징으로 하는 고밀도 전극.
- 제1항 또는 제2항에 있어서, 상기 탄소섬유의 평균 애스펙트비가 5~50,000인 것을 특징으로 하는 고밀도 전극.
- 제2항에 있어서, 상기 흑연계 탄소섬유의 X선 회절법으로 측정한 (002)면에서의 평균 층간거리(d002)가 0.344nm 이하인 것을 특징으로 하는 고밀도 전극.
- 제1항 또는 제2항에 있어서, 상기 탄소섬유는 그 내부에 중공구조를 갖는 것을 특징으로 하는 고밀도 전극.
- 제1항 또는 제2항에 있어서, 상기 탄소섬유는 분기상 탄소섬유를 함유하는 것을 특징으로 하는 고밀도 전극.
- 제1항 또는 제2항에 있어서, 상기 전극 활성물질이 탄소계 재료인 것을 특징으로 하는 고밀도 전극.
- 제10항에 있어서, 상기 탄소계 재료는 Si를 함유하는 것을 특징으로 하는 고밀도 전극.
- 제10항에 있어서, 상기 탄소계 재료는 비흑연계의 탄소계 재료이고, 전극의 벌크밀도가 1.5g/㎤ 이상인 것을 특징으로 하는 고밀도 전극.
- 제10항에 있어서, 전극으로 형성하기 전의 전극 활성물질로서 제공되는 탄소계 재료가 하기 요구조건을 만족하는 탄소질 입자의 형태인 것을 특징으로 하는 고밀도 전극.
(1) 플로우식 입자상 분석기를 사용하여 측정한 평균 진원도가 0.70~0.99이고; 또한
(2) 레이저 회절법으로 측정한 평균 입자크기가 1~50㎛임. - 제10항에 있어서, 상기 탄소계 재료는 흑연계 재료를 50질량% 이상 함유하고, 전극의 벌크밀도가 1.7g/㎤ 이상인 것을 특징으로 하는 고밀도 전극.
- 제14항에 있어서, 상기 흑연계 재료는 붕소를 함유하는 것을 특징으로 하는 고밀도 전극.
- 제14항에 있어서, 전극으로 형성하기 전의 전극 활성물질로서 제공되는 탄소계 재료가 하기 요구조건을 만족하는 흑연입자를 50질량% 이상 함유하는 탄소입자의 형태인 것을 특징으로 하는 고밀도 전극.
(1) 플로우식 입자상 분석기를 사용하여 측정한 평균 진원도가 0.70~0.99이고; 또한
(2) 레이저 회절법으로 측정한 평균 입자크기가 1~50㎛임. - 제14항에 있어서, 상기 흑연계 재료는 하기 요구조건을 만족하는 흑연입자를 50질량% 이상 함유하는 탄소입자인 것을 특징으로 하는 고밀도 전극.
(1) X선 회절법으로 측정한 (002)면의 C0가 0.6900nm이고, La(a축을 따라 측정한 결정자의 크기)가 100nm를 초과하고, Lc(c축을 따라 측정한 결정자의 크기)가 100nm을 초과하고;
(2) BET 비표면적이 0.2~5㎡/g이고;
(3) 진밀도가 2.20g/㎤ 이상이고; 또한
(4) 레이저 라만 R값(레이저 라만 스펙트럼에서 1,580cm-1에서의 피크강도에 대한 1,360cm-1에서의 피크강도의 비)이 0.01~0.9임. - 제1항 또는 제2항에 있어서, 상기 전극 활성물질이 Li합금인 것을 특징으로 하는 고밀도 전극.
- 제1항 또는 제2항에 있어서, 상기 전극 활성물질이 리튬 질화물계 재료인 것을 특징으로 하는 고밀도 전극.
- 제1항 또는 제2항에 있어서, 상기 전극 활성물질이 실리콘 산화물계 재료인 것을 특징으로 하는 고밀도 전극.
- 제1항 또는 제2항에 있어서, 상기 전극 활성물질이 금속 산화물계 재료인 것을 특징으로 하는 고밀도 전극.
- 제21항에 있어서, 상기 금속 산화물계 재료는 주석 산화물계 재료를 60질량% 이상 함유하는 것을 특징으로 하는 고밀도 전극.
- 제21항에 있어서, 상기 금속 산화물계 재료는 코발트 산화물을 60질량% 이상 함유하고, 전극의 벌크밀도는 3.6g/㎤ 이상인 것을 특징으로 하는 고밀도 전극.
- 제21항에 있어서, 상기 금속 산화물계 재료는 망간 산화물을 60질량% 이상 함유하고, 전극의 벌크밀도는 3.0g/㎤ 이상인 것을 특징으로 하는 고밀도 전극.
- 제21항에 있어서, 상기 금속 산화물계 재료는 코발트 산화물과 망간 산화물의 혼합물을 80질량% 이상 함유하고, 전극의 벌크밀도는 3.4g/㎤ 이상인 것을 특징으로 하는 고밀도 전극.
- 제21항에 있어서, 상기 금속 산화물계 재료는 니켈 산화물을 60질량% 이상 함유하고, 전극의 벌크밀도는 3.4g/㎤ 이상인 것을 특징으로 하는 고밀도 전극.
- 제21항에 있어서, 상기 금속 산화물계 재료는 바나듐 산화물을 60질량% 이상 함유하고, 전극의 벌크밀도는 2.3g/㎤ 이상인 것을 특징으로 하는 고밀도 전극.
- 제1항 또는 제2항에 있어서, 상기 전극 활성물질이 금속 황화물계 재료인 것을 특징으로 하는 고밀도 전극.
- 제1항 또는 제2항에 있어서, 상기 전극 활성물질이 철올리빈 화합물인 것을 특징으로 하는 고밀도 전극.
- 제1항 또는 제2항에 있어서, 필라멘트 직경 1~1,000nm의 탄소섬유를 0.2~20질량% 함유하고, 100mAh/g 이상의 용량밀도를 갖는 것을 특징으로 하는 고밀도 전극.
- 제30항에 있어서, 상기 전극이 25℃, 1atm에서 프로필렌 카보네이트 3㎕를 500초 이내에 흡수하는 것을 특징으로 하는 고밀도 전극.
- 제1항 또는 제2항에 있어서, 상기 고체 폴리머 전해질은 일반식(1) 및/또는 (2)으로 표시되는 단위를 구성요소로서 갖는 화합물을 하나 이상 함유하는 것을 특징으로 하는 고밀도 전극.
(식중, R1 및 R3는 각각 수소원자 또는 알킬기를 나타내고; R2 및 R5는 각각 옥시알킬렌기, 플루오로탄소기 및/또는 카보네이트기를 함유하는 2가의 기를 나타내고; R4는 탄소수 10개 이하의 2가의 기를 나타내고; R2, R4 및 R5는 각각 헤테로 원자를 함유해도 좋고, 직쇄상, 분기상 또는 환상 구조를 가져도 좋고; x는 0 또는 1~10의 정수를 나타내고; 한 분자 중에 상기 일반식으로 표시되는 중합성 관능기를 2개 이상 함유하는 경우, 한 관능기 중에 R1~R5 및 x는 다른 관능기의 것과 동일하거나 달라도 좋다.) - 제1항 또는 제2항에 있어서, 상기 고체 폴리머 전해질에 사용되는 비수계 용제는 에틸렌 카보네이트, 디에틸 카보네이트, 디메틸 카보네이트, 메틸에틸 카보네이트, 프로필렌 카보네이트, 부틸렌 카보네이트 및 비닐렌 카보네이트로 이루어진 군에서 선택되는 1종 이상을 함유하는 것을 특징으로 하는 고밀도 전극.
- 제1항 또는 제2항에 기재된 고밀도 전극을 포함하는 것을 특징으로 하는 전지.
- 제1항 또는 제2항에 기재된 고밀도 전극을 포함하는 것을 특징으로 하는 이차전지.
- 섬유 필라멘트 직경 1~1,000nm의 탄소섬유를 0.2~20질량% 함유하고, 고체 폴리머 전해질을 함침시킴으로써 용량밀도가 100mAh/g 이상이 되는 것을 특징으로 하는 리튬전지 전극.
- 제36항에 있어서, 상기 전극은 25℃, 1atm에서 프로필렌 카보네이트 3㎕를 500초 이내에 흡수하는 것을 특징으로 하는 리튬전지 전극.
- 제36항 또는 제37항에 있어서, 상기 고체 폴리머 전해질은 일반식(1) 및/또는 (2)으로 표시되는 단위를 구성요소로서 갖는 화합물을 하나 이상 함유하는 것을 특징으로 하는 리튬전지 전극.
(식중, R1 및 R3는 각각 수소원자 또는 알킬기를 나타내고; R2 및 R5는 각각 옥시알킬렌기, 플루오로탄소기 및/또는 카보네이트기를 함유하는 2가의 기를 나타내고; R4는 탄소수 10개 이하의 2가의 기를 나타내고; R2, R4 및 R5는 각각 헤테로 원자를 함유해도 좋고, 직쇄상, 분기상 또는 환상 구조를 가져도 좋고; x는 0 또는 1~10의 정수를 나타내고; 한 분자 중에 상기 일반식으로 표시되는 중합성 관능기를 2개 이상 함유하는 경우, 한 관능기 중에 R1~R5 및 x는 다른 관능기의 것과 동일하거나 달라도 좋다.) - 제36항 또는 제37항에 있어서, 상기 고체 폴리머 전해질에 사용되는 비수계 용제는 에틸렌 카보네이트, 디에틸 카보네이트, 디메틸 카보네이트, 메틸에틸 카보네이트, 프로필렌 카보네이트, 부틸렌 카보네이트 및 비닐렌 카보네이트로 이루어진 군에서 선택되는 1종 이상을 함유하는 것을 특징으로 하는 리튬전지 전극.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2884746B2 (ja) | 1990-09-03 | 1999-04-19 | 松下電器産業株式会社 | 非水電解液2次電池 |
| JP3033175B2 (ja) * | 1990-10-19 | 2000-04-17 | 松下電器産業株式会社 | 非水電解液二次電池 |
| US5541022A (en) * | 1992-08-06 | 1996-07-30 | Hitachi, Ltd. | Composite anode for nonaqueous secondary battery and method for producing the same |
| US5437943A (en) | 1992-09-04 | 1995-08-01 | Ricoh Company, Ltd. | Positive electrode and secondary battery using the same |
| JP3411112B2 (ja) | 1994-11-04 | 2003-05-26 | シスメックス株式会社 | 粒子画像分析装置 |
| JP3702318B2 (ja) * | 1996-02-09 | 2005-10-05 | 日本電池株式会社 | 非水電解質電池用電極及びその電極を用いた非水電解質電池 |
| EP0858119A3 (en) * | 1997-01-20 | 2006-02-01 | Matsushita Electric Industrial Co., Ltd. | Polymer electrolyte and lithium-polymer battery using the same |
| JPH10261406A (ja) * | 1997-03-14 | 1998-09-29 | Nikkiso Co Ltd | 炭素電極およびそれを負極に用いた非水電解液二次電 池 |
| US6085015A (en) * | 1997-03-25 | 2000-07-04 | Hydro-Quebec | Lithium insertion electrode materials based on orthosilicate derivatives |
| JP3611716B2 (ja) | 1997-05-27 | 2005-01-19 | 昭和電工株式会社 | 熱重合性組成物及びその用途 |
| JP3984359B2 (ja) | 1997-09-10 | 2007-10-03 | 昭和電工株式会社 | 重合性化合物、それを用いた高分子固体電解質及びその用途 |
| US6190805B1 (en) | 1997-09-10 | 2001-02-20 | Showa Denko Kabushiki Kaisha | Polymerizable compound, solid polymer electrolyte using the same and use thereof |
| US6194099B1 (en) * | 1997-12-19 | 2001-02-27 | Moltech Corporation | Electrochemical cells with carbon nanofibers and electroactive sulfur compounds |
| TW524904B (en) * | 1999-03-25 | 2003-03-21 | Showa Denko Kk | Carbon fiber, method for producing same and electrodes for electric cells |
| JP4878687B2 (ja) * | 2001-02-23 | 2012-02-15 | 三洋電機株式会社 | リチウム二次電池 |
| JP3635044B2 (ja) | 2001-06-08 | 2005-03-30 | 三井鉱山株式会社 | リチウム二次電池用負極材料、その製造方法、及びリチウム二次電池 |
| US6852449B2 (en) * | 2002-08-29 | 2005-02-08 | Quallion Llc | Negative electrode including a carbonaceous material for a nonaqueous battery |
| EP1573835B1 (en) * | 2002-11-26 | 2017-05-03 | Showa Denko K.K. | Electrode material comprising silicon and/or tin particles and production method and use thereof |
-
2004
- 2004-07-27 WO PCT/JP2004/011007 patent/WO2005011027A2/en not_active Ceased
- 2004-07-27 TW TW093122442A patent/TWI344714B/zh not_active IP Right Cessation
- 2004-07-27 KR KR1020127018925A patent/KR20120088005A/ko not_active Ceased
- 2004-07-27 KR KR1020067001277A patent/KR101183939B1/ko not_active Expired - Lifetime
- 2004-07-27 US US10/565,627 patent/US7572553B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| KR20060039008A (ko) | 2006-05-04 |
| KR101183939B1 (ko) | 2012-09-19 |
| US7572553B2 (en) | 2009-08-11 |
| US20070111101A1 (en) | 2007-05-17 |
| WO2005011027A2 (en) | 2005-02-03 |
| WO2005011027A3 (en) | 2005-06-30 |
| TWI344714B (en) | 2011-07-01 |
| TW200511631A (en) | 2005-03-16 |
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