KR101796952B1 - 전지 전극의 도전제, 그것을 포함하는 전극 및 전지 - Google Patents
전지 전극의 도전제, 그것을 포함하는 전극 및 전지 Download PDFInfo
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- KR101796952B1 KR101796952B1 KR1020107026586A KR20107026586A KR101796952B1 KR 101796952 B1 KR101796952 B1 KR 101796952B1 KR 1020107026586 A KR1020107026586 A KR 1020107026586A KR 20107026586 A KR20107026586 A KR 20107026586A KR 101796952 B1 KR101796952 B1 KR 101796952B1
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- South Korea
- Prior art keywords
- electrode
- battery
- conductive agent
- soluble polyimide
- polyimide
- Prior art date
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- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
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- H01M10/052—Li-accumulators
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- H01M4/02—Electrodes composed of, or comprising, active material
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- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
- H01M4/1393—Processes of manufacture of electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
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- H—ELECTRICITY
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- H—ELECTRICITY
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
Description
도 2는 본 발명의 실시예 및 비교예에서 각각 제작한 전지의 각 정극의 건조 상태에서의 면방향의 임피던스의 측정 결과를 도시한 도면이다.
3: 세퍼레이터 4: 정극 리드
5: 부극 리드 6: 캡
7: 스테인레스 용기
Claims (15)
- π 공역 탄소 재료와 가용성 폴리이미드 용액과의 혼합물을 전극 활물질과 혼합하기 전에, 80℃이상 180℃이하의 온도 하에서 2시간이상 가열처리하는 것을 포함하는 리튬 2차 전지의 전극용 도전제의 제조방법으로서,
상기 가용성 폴리이미드가, 100g의 질소 함유 극성 용매 중에 5g 이상 용해하는 폴리이미드이고, 그 분자 골격 중에, 방향족환 연결기로서 카르보닐기 및 에테르기 중 어느 하나 이상을 가지는 단위를 포함하고,
상기 π 공역 탄소재료는 케첸 블랙, 아세틸렌 블랙, 카본 나노 튜브, 풀러렌, 카본나노혼 및 1차 입경이 10나노미터 이하인 다른 카본재료로 이루어진 군으로부터 선택되는 1종 이상이고,
상기 혼합물 중의 상기 π 공역 탄소 재료와 상기 가용성 폴리이미드의 혼합비율이 π 공역 탄소 재료 100중량부에 대하여 가용성 폴리이미드가 50~150중량부인 것을 특징으로 하는 리튬 2차 전지의 전극용 도전제의 제조방법. - 제 1 항에 있어서,
상기 가용성 폴리이미드 용액이, 질소 함유 극성 용매 중에 가용성 폴리이미드가 용해된 용액인 것을 특징으로 하는 리튬 2차 전지의 전극용 도전제의 제조방법. - 제 1 항에 있어서,
상기 가열처리는 2~8시간동안 행하는 것을 특징으로 하는 리튬 2차 전지의 전극용 도전제의 제조방법. - 삭제
- 제 1 항에 있어서,
상기 가용성 폴리이미드는, 그 분자 골격 중에, 방향족환 연결기로서 카르보닐기 및 에테르기를 가지는 단위를 포함하는 것을 특징으로 하는 리튬 2차 전지의 전극용 도전제의 제조방법. - 제 1 항에 있어서,
상기 폴리이미드의 유리 전이 온도가 270℃이하인 것을 특징으로 하는 리튬 2차 전지의 전극용 도전제의 제조방법. - 제 1 항에 있어서,
상기 전극이 정극인 것을 특징으로 하는 리튬 2차 전지의 전극용 도전제의 제조방법. - 제 1 항에 있어서,
상기 전극이 부극인 것을 특징으로 하는 리튬 2차 전지의 전극용 도전제의 제조방법. - 제 1 항에 있어서,
상기 π 공역 탄소재료는 케첸 블랙, 아세틸렌 블랙, 카본 나노 튜브 및 1차 입경이 10나노미터 이하인 다른 카본재료로 이루어진 군에서 선택되는 1종 이상인 것을 특징으로 하는 리튬 2차 전지의 전극용 도전제의 제조방법. - 제 9 항에 있어서,
상기 π 공역 탄소재료는 케첸 블랙, 아세틸렌 블랙 및 카본 나노 튜브로 이루어진 군에서 선택되는 1종 이상인 것을 특징으로 하는 리튬 2차 전지의 전극용 도전제의 제조방법. - 제 1 항 내지 제 3 항 및 제 5 항 내지 제 10 항 중 어느 한 항에 기재된 제조방법에 의해 제조된 도전제와 전극 활물질을 포함하는 조성물이 집전체 상에 피착되어 이루어지는 것을 특징으로 하는 리튬 2차 전지의 전극.
- 제 11 항에 있어서,
상기 조성물은 바인더를 더 포함하는 것을 특징으로 하는 리튬 2차 전지의 전극. - 제 11 항에 기재된 전극을 포함하는 것을 특징으로 하는 리튬 2차 전지.
- 제 1 항에 있어서,
상기 π 공역 탄소재료는 케첸 블랙, 아세틸렌 블랙, 카본 나노 튜브, 풀러렌 및 카본 나노혼으로 이루어진 군에서 선택되는 1종 이상인 것을 특징으로 하는 리튬 2차 전지의 전극용 도전제의 제조방법. - 삭제
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WO2009142203A1 (ja) | 2009-11-26 |
JP5305503B2 (ja) | 2013-10-02 |
US9780375B2 (en) | 2017-10-03 |
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CN102119458A (zh) | 2011-07-06 |
KR20110019361A (ko) | 2011-02-25 |
KR20160058879A (ko) | 2016-05-25 |
CN102119458B (zh) | 2014-10-22 |
US20150249251A1 (en) | 2015-09-03 |
EP2333880B1 (en) | 2018-02-28 |
EP2333880A4 (en) | 2014-03-12 |
US20110189540A1 (en) | 2011-08-04 |
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