KR20210077004A - 전기화학 전지의 전극용 첨가제 재료, 이중층 커패시터 및 이러한 전극의 제조방법 - Google Patents
전기화학 전지의 전극용 첨가제 재료, 이중층 커패시터 및 이러한 전극의 제조방법 Download PDFInfo
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Abstract
Description
본 발명은 예시적인 구현예 및 도면을 참조하여 이하에서 더 상세히 설명된다. 개별적인 도면은 다음을 나타낸다:
도 1: 양극, 음극 및 세퍼레이터를 갖는 이중층 커패시터의 전지의 개략도,
도 2: 첨가제가 없는 전극 재료의 주사 전자 현미경 이미지,
도 3: 첨가제가 있는 전극 재료의 주사 전자 현미경 이미지,
도 4: 본 발명에 따르는 전극과 비교되는 첨가제로서 전도성 카본 블랙을 갖는 종래의 전극의 사이클릭 전압 곡선(cyclic voltammograms),
도 5: 도 4의 전압 곡선의 확대 부분,
도 6: 레이트 안정성(rate stability)의 비교 측정의 결과, 및
도 7: 재료 활용도의 비교 측정의 결과.
Claims (15)
- 탄소로 구성된 전기 전도성 첨가제 입자를 포함하고, 탄소 첨가제 입자는 1 내지 20 μm의 범위의 평균 입자 직경을 가지고, 메조포어(mesopores) 및 매크로포어(macropores)를 포함하며, 상기 메조포어 및 매크로포어는 상호 연결된 기공의 3차원 기공 구조를 형성하는 것을 특징으로 하는, 전기화학 전지의 전극용 첨가제 재료.
- 제1항에 있어서, 탄소 첨가제 입자는 10 내지 600 m2/g의 범위, 바람직하게는 10 내지 50 m2/g의 범위, 100 내지 200 m2/g의 범위, 60 내지 150 m2/g의 범위 또는 400 내지 600 m2/g의 범위의 BET 비표면적을 갖는 것을 특징으로 하는, 첨가제 재료.
- 제1항 또는 제2항에 있어서, 탄소 첨가제 입자는 최대 1000 nm까지의 기공 크기를 갖는 기공 부피에 기초하여, 20% 미만의 미세 다공도(microporosity)를 갖는 것을 특징으로 하는, 첨가제 재료.
- 제1항 내지 제3항에 있어서, 탄소 첨가제 입자는 15 μm 미만, 바람직하게는 10 μm 미만, 특히 바람직하게는 5 μm 미만의 평균 입자 직경을 갖는 것을 특징으로 하는, 첨가제 재료.
- 제1항 내지 제4항에 있어서, 탄소 첨가제 입자는 60 내지 85%의 범위의 총 다공도를 갖는 것을 특징으로 하는, 첨가제 재료.
- 제1항 내지 제5항에 있어서, 탄소 첨가제 입자의 다공도는 250 내지 700 nm 범위의 평균 기공 너비에 의해 정의되는 것을 특징으로 하는, 첨가제 재료.
- 제1항 내지 제6항에 있어서, 10 내지 1000 nm의 기공 직경을 갖는 기공이 0.2 cm3/g 초과, 바람직하게는 0.5 내지 2.3 cm³/g의 범위의 누적 기공 부피, 특히 바람직하게는 적어도 1 cm³/g의 누적 기공 부피를 구성하는 것을 특징으로 하는, 첨가제 재료.
- 두 개의 전극이 서로 이격되어 배치되고, 전기적인 연결이 제공되고, 세퍼레이터에 의해 분리되고, 전해질에 의해 습윤되며, 상기 전극의 적어도 하나가 마이크로포어 탄소(microporous carbon), 활성 물질, 전기 전도성 탄소 첨가제 입자로 구성된 첨가제 재료, 및 바인더를 포함하고, 상기 첨가제 재료는 1 내지 20 μm의 범위의 평균 입자 직경을 갖는 탄소로 구성된 전기 전도성 입자를 포함하고, 메조포어(mesopores) 및 매크로포어(macropores)를 포함하고, 상기 메조포어 및 매크로포어는 상호 연결된 기공의 3차원 기공 구조를 형성하는 것을 특징으로 하는, 이중층 커패시터.
- 제8항에 있어서, 활성 물질은 탄소 첨가제 입자의 평균 입자 직경보다 적어도 3배 보다 큰 평균 1차 입자 직경을 갖는 1차 입자로부터 형성되고, 상기 평균 1차 입자 직경은 30 μm 이하인 것을 특징으로 하는, 이중층 커패시터.
- 제9항에 있어서, 활성 물질 입자의 평균 1차 입자 직경은 20 내지 30 μm의 범위이고, 탄소 첨가제 입자의 평균 입자 직경은 7 내지 10 μm의 범위인 것을 특징으로 하는, 이중층 커패시터.
- 제8항 내지 제10항 중 어느 한 항에 있어서, 전극은 탄소 첨가제 입자를 4 내지 7 중량%의 범위의 비율로 포함하는 것을 특징으로 하는, 이중층 커패시터.
- 제8항 내지 제11항 중 어느 한 항에 있어서, 전극은 적어도 100 μm, 바람직하게는 적어도 150 μm의 두께를 갖는 전극층을 갖는 것을 특징으로 하는, 이중층 커패시터.
- 활성 물질용 출발 물질, 첨가제 재료 및 바인더가 가공되어 페이스트(paste)를 형성하고, 상기 페이스트는 가공되어 전극 재료의 층을 형성하며, 탄소의 전기 전도성 입자는 첨가제 재료로서 사용되고, 상기 입자는 1 내지 20 μm 범위의 평균 입자 직경을 가지며 메조포어 및 매크로포어를 포함하고, 상기 메조포어 및 매크로포어는 상호 연결된 기공의 3차원 기공 구조를 형성하는 것을 특징으로 하는, 이중층 커패시터 제조 방법.
- 황-납 축전지의 전극판의 첨가제로서 40 내지 600 m2/g의 범위의 BET 비표면적을 갖는 제1항 내지 제7항 중 어느 한 항에 따르는 첨가제 재료의 용도.
- 리튬-이온 배터리의 전극의 첨가제로서 60 내지 150 m2/g의 범위의 BET 비표면적을 갖는 제1항 내지 제7항 중 어느 한 항에 따르는 첨가제 재료의 용도.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP16188414.3A EP3293745B1 (de) | 2016-09-12 | 2016-09-12 | Additiv-material für eine elektrode einer elektrochemischen zelle, doppelschichtkondensator und herstellungsverfahren für eine elektrode desselben |
| EP16188414.3 | 2016-09-12 | ||
| KR1020197007396A KR102269533B1 (ko) | 2016-09-12 | 2017-09-05 | 전기화학 전지의 전극용 첨가제 재료, 이중층 커패시터 및 이러한 전극의 제조방법. |
| PCT/EP2017/072206 WO2018046484A1 (de) | 2016-09-12 | 2017-09-05 | Additiv-material für eine elektrode einer elektrochemischen zelle, doppelschichtkondensator und herstellungsverfahren für eine elektrode desselben |
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| KR1020197007396A Division KR102269533B1 (ko) | 2016-09-12 | 2017-09-05 | 전기화학 전지의 전극용 첨가제 재료, 이중층 커패시터 및 이러한 전극의 제조방법. |
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| KR20210077004A true KR20210077004A (ko) | 2021-06-24 |
| KR102429092B1 KR102429092B1 (ko) | 2022-08-04 |
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| KR1020217018374A Active KR102429092B1 (ko) | 2016-09-12 | 2017-09-05 | 전기화학 전지의 전극용 첨가제 재료, 이중층 커패시터 및 이러한 전극의 제조방법 |
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| US (1) | US11114253B2 (ko) |
| EP (1) | EP3293745B1 (ko) |
| KR (2) | KR102269533B1 (ko) |
| CN (1) | CN109643611B (ko) |
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| US12347861B2 (en) | 2016-05-12 | 2025-07-01 | Navitas Systems, Llc | Compositions and methods for electrode fabrication |
| KR102365086B1 (ko) * | 2018-12-03 | 2022-02-18 | 주식회사 엘지에너지솔루션 | 비파괴적 활물질의 활성 면적 측정 방법 |
| KR102945053B1 (ko) * | 2020-12-04 | 2026-03-26 | 주식회사 엘지에너지솔루션 | 이차 전지용 전극, 이를 포함하는 이차 전지 및 전극 제조 방법 |
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| US8865351B2 (en) * | 2011-03-14 | 2014-10-21 | Ut-Battelle, Llc | Carbon composition with hierarchical porosity, and methods of preparation |
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- 2017-09-05 US US16/332,521 patent/US11114253B2/en active Active
- 2017-09-05 WO PCT/EP2017/072206 patent/WO2018046484A1/de not_active Ceased
- 2017-09-05 CN CN201780052339.8A patent/CN109643611B/zh active Active
- 2017-09-05 KR KR1020217018374A patent/KR102429092B1/ko active Active
- 2017-09-12 TW TW106131274A patent/TWI664653B/zh active
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| KR20050116171A (ko) * | 2004-06-07 | 2005-12-12 | 한남대학교 산학협력단 | 이중 다공성 탄소 구조체, 그의 제조방법 및 그것을이용한 연료 전지용 촉매 |
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Also Published As
| Publication number | Publication date |
|---|---|
| US20190237270A1 (en) | 2019-08-01 |
| TW201826299A (zh) | 2018-07-16 |
| CN109643611B (zh) | 2021-07-06 |
| KR102269533B1 (ko) | 2021-06-29 |
| EP3293745A1 (de) | 2018-03-14 |
| EP3293745B1 (de) | 2019-08-14 |
| US11114253B2 (en) | 2021-09-07 |
| CN109643611A (zh) | 2019-04-16 |
| WO2018046484A1 (de) | 2018-03-15 |
| KR20190046867A (ko) | 2019-05-07 |
| KR102429092B1 (ko) | 2022-08-04 |
| TWI664653B (zh) | 2019-07-01 |
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