KR101890747B1 - 이온 교환막 충전용 조성물, 이온 교환막의 제조방법, 이온 교환막 및 레독스 플로우 전지 - Google Patents
이온 교환막 충전용 조성물, 이온 교환막의 제조방법, 이온 교환막 및 레독스 플로우 전지 Download PDFInfo
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Abstract
Description
도 2는 본 발명의 일 구현예에 따른 레독스 플로우 전지를 개략적으로 나타낸 도면이다.
도 3은 실시예 1 및 비교예 2에서 각각 제조된 레독스 플로우 전지의 셀 저항 특성을 보여주는 임피던스 스펙트럼이다.
도 4는 실시예 3 및 비교예 2에서 각각 제조된 레독스 플로우 전지의 충방전 효율, 전압 효율 및 에너지 효율을 나타낸 그래프이다.
도 5는 실시예 3에서 제조된 레독스 플로우 전지의 충방전 사이클 횟수에 따른 충전용량과 방전용량의 변화를 나타낸 그래프이다.
도 6은 이온 전도성 물질만을 사용하여 제조된 이온 교환막(비교예 1)의 SEM 단면 사진이다.
도 7은 이온 전도성 물질과 수용성 지지체를 사용하여 제조된 이온 교환막(실시예 3)의 SEM 단면 사진이다.
이온 전도성 물질 | 수용성 지지체 | 용매 (NMP 수용액) (중량부) |
열중합 개시제 (AIBN) (wtppm*3) |
|||
종류 | 함량 (중량부) |
종류 | 함량 (중량부) |
|||
실시예 1 | VBTMAC*1 | 90 | PVA*2 | 10 | 20 | 0.3 |
실시예 2 | VBTMAC | 70 | PVA | 30 | 20 | 0.3 |
실시예 3 | VBTMAC | 60 | PVA | 40 | 20 | 0.3 |
실시예 4 | VBTMAC | 40 | PVA | 60 | 20 | 0.3 |
비교예 1 | VBTMAC | 100 | 미사용 | 20 | 10 |
실시예 1 | 실시예 2 | 실시예 3 | 실시예 4 | 비교예 1 | 비교예 2 | |
이온전도도 (10-4 S/cm) |
5.91 | 5.87 | 5.85 | 5.00 | 3.10 | 4.12 |
실시예 1 | 실시예 2 | 실시예 3 | 실시예 4 | 비교예 1 | 비교예 2 | |
셀 저항 (ohm,Ω) |
0.90 | 0.89 | 0.92 | 0.98 | 1.95 | 1.17 |
실시예 1 | 실시예 2 | 실시예 3 | 실시예 4 | 비교예 1 | 비교예 2 | |
충방전 효율(CE)(%) | 81 | 83 | 92 | 85 | - | 68 |
전압 효율(VE)(%) | 97 | 95 | 93 | 97 | - | 91 |
에너지 효율(EE)(%) | 79 | 82 | 85 | 81 | - | 60 |
용량 감소율(%) | 18 | 16 | 14 | 18 | - | 38 |
실시예 1 | 실시예 2 | 실시예 3 | 실시예 4 | 비교예 1 | 비교예 2 | |
투과 전해액의 농도(wtppm) | 13.5 | 13.0 | 12.6 | 12.6 | - | 28.0 |
11: 캐소드 전해액 12: 애노드 전해액
13: 캐소드 14: 애노드
21, 22: 탱크 31, 32: 펌프
41, 42: 관 100: 이온 교환막
110: 다공성 기재막 120: 이온 전도성 물질
130: 수용성 지지체
Claims (20)
- 캐소드 전해액;
애노드 전해액; 및
상기 캐소드 전해액과 상기 애노드 전해액 사이에 배치된 이온 교환막을 포함하는 레독스 플로우 전지로서,
상기 이온 교환막은 이온 교환성을 갖는 다공성 기재막 및 상기 다공성 기재막 내에 이온 교환막 충전용 조성물의 중합생성물을 포함하고,
상기 이온 교환막은 유효 이온(effective ion)의 투과율을 높이면서 상기 유효 이온을 제외한 전해액 성분의 cross over를 감소시키는 역할을 수행하고, 상기 유효 이온은 상기 이온 교환막을 투과함으로써 상기 레독스 플로우 전지가 충방전 기능을 발휘할 수 있게 하는 전해액 성분을 의미하고,
상기 이온 교환막은 음이온 교환막이고, 상기 캐소드 전해액과 상기 애노드 전해액 중 적어도 하나는 유기 전해액이고,
상기 이온 교환막 충전용 조성물은,
이온 전도성 물질; 및
수용성 지지체를 포함하고,
상기 이온 전도성 물질은 하기 화학식 1 내지 4로 이루어진 군으로부터 선택된 적어도 1종의 4급 암모늄염을 포함하는 레독스 플로우 전지:
[화학식 1]
상기 화학식 1에서, y에 대한 x의 비(x/y)는 0.1~0.5이다. 또한, 상기 화학식 1로 표시되는 4급 암모늄염의 중량평균분자량은 100,000~500,000이다.
[화학식 2]
[화학식 3]
[화학식 4]
상기 화학식 4에서, n은 100~10,000의 정수이다. - 삭제
- 삭제
- 삭제
- 삭제
- 제1항에 있어서,
상기 수용성 지지체는 수용성 모노머 및 수용성 폴리머로 이루어진 군으로부터 선택된 적어도 1종의 화합물을 포함하는 레독스 플로우 전지. - 제6항에 있어서,
상기 수용성 모노머는 비닐 알코올, 비닐 아세테이트, 아크릴로니트릴 및 메틸 메타크릴레이트로 이루어진 군으로부터 선택된 적어도 1종의 화합물을 포함하는 레독스 플로우 전지. - 제6항에 있어서,
상기 수용성 폴리머는 폴리아크릴아미드, 폴리아크릴산, 폴리(아크릴아미드-co-아크릴산), 폴리비닐알코올, 폴리(디알릴 디메틸 암모늄 클로라이드) 및 폴리(소듐 4-스티렌술포네이트)로 이루어진 군으로부터 선택된 적어도 1종의 화합물을 포함하는 레독스 플로우 전지. - 제1항에 있어서,
상기 이온 전도성 물질 대 상기 수용성 지지체의 중량비는 70:30~30:70인 레독스 플로우 전지. - 제1항에 있어서,
상기 이온 교환막 충전용 조성물은 적어도 1종의 용매를 추가로 포함하는 레독스 플로우 전지. - 제10항에 있어서,
상기 용매는 물, 메탄올, 에탄올, 디메틸아세트아미드, N-메틸-2-피롤리돈, 디메틸포름아미드, 디메틸설폭사이드 및 테트라하이드로푸란으로 이루어진 군으로부터 선택된 적어도 1종의 화합물을 포함하는 레독스 플로우 전지. - 제11항에 있어서,
상기 용매의 함량은 상기 이온 전도성 물질 및 상기 수용성 지지체의 총 중량 100중량부를 기준으로 0~100중량부인 레독스 플로우 전지. - 제1항에 있어서,
상기 이온 교환막 충전용 조성물은 열중합 개시제 또는 광중합 개시제를 추가로 포함하는 레독스 플로우 전지. - 삭제
- 제1항에 있어서,
상기 다공성 기재막은 폴리올레핀, 폴리테트라플루오로에틸렌, 폴리에테르에테르케톤, 폴리술폰, 폴리이미드 및 폴리아미드이미드로 이루어진 군으로부터 선택된 적어도 1종의 화합물을 포함하는 레독스 플로우 전지. - 삭제
- 제1항에 있어서,
상기 이온 교환막은 1.0×10-4 S/cm 이상의 이온전도도를 갖는 레독스 플로우 전지. - 제1항에 있어서,
상기 이온교환막은 20~100㎛의 두께를 갖는 레독스 플로우 전지. - 삭제
- 삭제
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
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KR1020110114123A KR101890747B1 (ko) | 2011-11-03 | 2011-11-03 | 이온 교환막 충전용 조성물, 이온 교환막의 제조방법, 이온 교환막 및 레독스 플로우 전지 |
US13/562,574 US20130115504A1 (en) | 2011-11-03 | 2012-07-31 | Ion exchange membrane filling composition, method of preparing ion exchange membrane, ion exchange membrane, and redox flow battery |
EP12181563.3A EP2590250B1 (en) | 2011-11-03 | 2012-08-23 | Ion exchange membrane and redox flow cell comprising said ion exchange membrane |
JP2012194795A JP6101455B2 (ja) | 2011-11-03 | 2012-09-05 | イオン交換膜充電用組成物、イオン交換膜の製造方法、イオン交換膜及びレドックスフロー電池 |
CN201210392476.5A CN103087452B (zh) | 2011-11-03 | 2012-10-16 | 离子交换膜填充组合物、其制法、离子交换膜和电池 |
US14/710,994 US9728792B2 (en) | 2011-11-03 | 2015-05-13 | Ion exchange membrane filling composition, method of preparing ion exchange membrane, ion exchange membrane, and redox flow battery |
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US9728792B2 (en) | 2017-08-08 |
EP2590250B1 (en) | 2020-10-07 |
KR20130049077A (ko) | 2013-05-13 |
CN103087452A (zh) | 2013-05-08 |
US20150249253A1 (en) | 2015-09-03 |
US20130115504A1 (en) | 2013-05-09 |
JP6101455B2 (ja) | 2017-03-22 |
EP2590250A1 (en) | 2013-05-08 |
JP2013095918A (ja) | 2013-05-20 |
CN103087452B (zh) | 2017-11-21 |
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