KR20200140781A - 유/무기고분자전해질 복합막 및 그 제조방법 - Google Patents
유/무기고분자전해질 복합막 및 그 제조방법 Download PDFInfo
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/1016—Fuel cells with solid electrolytes characterised by the electrolyte material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/18—Regenerative fuel cells, e.g. redox flow batteries or secondary fuel cells
- H01M8/184—Regeneration by electrochemical means
- H01M8/188—Regeneration by electrochemical means by recharging of redox couples containing fluids; Redox flow type batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0065—Solid electrolytes
- H01M2300/0068—Solid electrolytes inorganic
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0065—Solid electrolytes
- H01M2300/0082—Organic polymers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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- H01M2300/0088—Composites
- H01M2300/0091—Composites in the form of mixtures
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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
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- Y02E60/50—Fuel cells
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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
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Abstract
Description
도 2는 본 발명의 다른 실시예에 따른 유/무기 고분자전해질 복합막에 포함되는 알콕시 실란 기능성 고분자인 BD-ASFP의 화학적 구조를 나타낸 도면이다.
도 3은 본 발명의 또 다른 실시예에 따른 유/무기 고분자전해질 복합막에 포함되는 알콕시 실란 기능성 고분자인 BDP-ASFP의 화학적 구조를 나타낸 도면이다.
도 4는 본 발명의 유/무기 고분자전해질 복합막 제조방법에 따라 도 1 내지 도 3에 도시된 알콕시 실란 기능성 고분자가 합성되었는지 확인하기 위한 적외선 분광법(Fourier-transform infrared spectroscopy, FT-IR) 결과그래프이다.
도 5는 본 발명의 유/무기 고분자전해질 복합막과 대조군인 나피온막, 알콕시 실란 기능성 고분자(D-ASFP)의 화학구조 분석(FT-IR) 결과그래프이다.
도 6는 본 발명의 유/무기 고분자전해질 복합막과 대조군인 나피온막의 열중량 분석(TGA) 결과그래프이다.
도 7은 본 발명의 유/무기 고분자전해질 복합막과 대조군인 나피온막의 (a) 함수율 및 (b) 치수변화율을 나타낸 그래프이다.
도 8은 본 발명의 유/무기 고분자전해질 복합막과 대조군인 나피온막의 이온교환용량(IEC)을 나타낸 그래프이다.
도 9은 본 발명의 유/무기 고분자전해질 복합막과 대조군인 나피온막의 이온전도도를 나타낸 그래프이다.
도 10는 본 발명의 유/무기 고분자전해질 복합막과 대조군인 나피온막의 (a) UV-vis spectrometer를 이용하여 측정된 VO2+ 이온의 농도 및 (b) 이를 통해 계산한 VO2+ 이온투과도를 나타낸 그래프이다.
도 11은 본 발명의 유/무기 고분자전해질 복합막과 대조군인 나피온막의 이온전도도 및 이온선택도를 나타낸 그래프이다.
Claims (10)
- 알콕시실란 기능성고분자와 과불소계고분자의 가교결합구조; 및
상기 가교결합구조 내부에 균일하게 분산된 나노실리카입자;를 포함하며,
상기 알콕시실란기능성고분자는 D-ASFP (Diol Alkoxysilane- Functionalized Polymer), BD-ASFP (Bisphenol Dimethylbenzanthracene ASFP), BDP-ASFP (Bisphenol Dimethylbenzanthracene Polydimethylsiloxane ASFP) 및 이들의 조합으로 이루어진 군에서 선택되는 어느 하나 이상이고,
상기 과불소계고분자는 나피온(듀폰), 3M 아이오노머 (3M), 푸미온(Fumion), 아키플렉스(Aciplex), 아퀴비온(Aquivion), 술폰화된 과불소계 고분자(PFSA, perfluorinated sulfonic acid), 폴리테트라플루오로에틸렌, 폴리비닐리덴플로라이드(poly(vinylidene fluoride)), 폴리비닐플로라이드(poly (vinyl fluoride)), 폴리비닐리덴 플루오르 코 퍼플루오르화 알킬비닐에테르(poly (vinylidene fluo-co-perfluorinated alkyl vinyl ethers))의 조합으로 이루어진 군에서 선택되는 어느 하나 이상이며,
이온 투과도가 2×10-7 cm2/min 이하인 것을 특징으로 하는 유/무기고분자전해질 복합막.
- 알콕시실란 기능성고분자용액 및 과불소계고분자용액을 준비하는 단계;
상기 알콕시실란 기능성고분자용액과 과불소계 고분자 용액을 혼합하여 막전구체용액을 준비하는 단계;
상기 막전구체용액을 캐스팅하여 캐스팅층을 형성하는 캐스팅단계;
상기 캐스팅층에 포함된 알콕시실란 기능성고분자와 과불소계고분자를 가교시켜 전구체막을 형성하는 제막단계; 및
상기 전구체막을 프로토네이션시키는 전처리단계;를 포함하며,
상기 알콕시실란 기능성고분자용액에 포함된 알콕시실란기능성고분자는 D-ASFP (Diol Alkoxysilane- Functionalized Polymer), BD-ASFP (Bisphenol Dimethylbenzanthracene ASFP), BDP-ASFP (Bisphenol Dimethylbenzanthracene Polydimethylsiloxane ASFP) 및 이들의 조합으로 이루어진 군에서 선택되는 어느 하나 이상이고,
상기 제막단계에서 열가교반응을 통해 상기 알콕시실란 기능성고분자와 과불소계고분자의 가교결합구조 및 상기 가교결합구조 내부에 균일하게 분산된 나노실리카입자가 생성되며,
상기 알콕시실란 기능성고분자용액 및 상기 과불소계고분자용액은 각각 용매 100중량부 당 알콕시 실란 기능성 고분자 및 과불소계고분자를 5 내지 70중량부 포함하고,
상기 막전구체용액은 상기 알콕시 실란 기능성 고분자 용액 5 ~ 95 중량% 및 상기 과불소계고분자 용액 95 ~ 5 중량%를 포함하는 것을 특징으로 하는 유/무기고분자전해질 복합막 제조방법. - 제 2 항에 있어서,
상기 용매는 증류수, 에탄올, 이소프로판올, 메탄올, 디메틸술폭사이드, N,N-디메틸아세트아미드, N-메틸-2-피릴리디논, N,N-디메틸포름아미드로 구성된 군에서 선택되는 하나 이상인 것을 특징으로 하는 유/무기고분자전해질 복합막 제조방법.
- 제 2 항에 있어서,
상기 막전구체용액은 상기 알콕시 실란 기능성 고분자 용액 및 상기 과불소계고분자 용액을 20~50도의 온도에서 교반하여 얻어지는 특징으로 하는 유/무기고분자전해질 복합막 제조방법.
- 제 2 항에 있어서,
상기 제막단계는 상기 캐스팅층을 70℃ 이하의 진공상태에서 건조시키는 단계; 건조된 캐스팅층을 70 내지 90℃에서 처리하는 1차 열처리 단계; 및 100℃이상의 온도에서 처리하는 2차 열처리 단계;를 포함하는 것을 특징으로 하는 유/무기고분자전해질 복합막 제조방법.
- 제 2 항에 있어서,
상기 프로토네이션은 상기 전구체막을 염기성수용액에 침지시켜 처리한 후 증류수에 침지시키고, 다시 산성수용액에 침지시켜 처리한 후 증류수에 침지시켜 수행되는 것을 특징으로 하는 유/무기고분자전해질 복합막 제조방법.
- 제 1 항의 유/무기고분자전해질 복합막 또는 제 2 항 내지 제 6 항 중 어느 한 항의 제조방법으로 제조된 유/무기고분자전해질 복합막을 포함하는 연료전지.
- 제 1 항의 유/무기고분자전해질 복합막 또는 제 2 항 내지 제 6 항 중 어느 한 항의 제조방법으로 제조된 유/무기고분자전해질 복합막을 포함하는 에너지저장장치.
- 제 8 항에 있어서,
상기 에너지저장장치는 레독스흐름전지 또는 연료전지인 것을 특징으로 하는 에너지저장장치.
- 제 1 항의 유/무기고분자전해질 복합막 또는 제 2 항 내지 제 6 항 중 어느 한 항의 제조방법으로 제조된 유/무기고분자전해질 복합막을 포함하는 수처리장치.
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