한국수소및신에너지학회논문집 (Transactions of the Korean hydrogen and new energy society)

  • 제33권3호
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  • Pages.209-218
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  • 2022
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  • 1738-7264(pISSN)
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  • 2288-7407(eISSN)
한국수소및신에너지학회 (The Korean Hydrogen and New Energy Society)
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수지상 폴리(알릴렌 이써 설폰)에 도입된 지방족 알킬사슬 연결자길이에 따른 음이온교환막의 특성 연구

A Study on the Characteristics of Anion Exchange Membrane According to Aliphatic Alkyl Chain Spacer Length Introduced into Branched Poly (Arylene Ether Sulfone)

  • 김현진 (전북대학교 대학원 에너지저장.변환공학과(BK21 FOUR), 수소.연료전지연구센터) ;
  • 유동진 (전북대학교 대학원 에너지저장.변환공학과(BK21 FOUR), 수소.연료전지연구센터)
  • KIM, HYUN JIN (Department of Energy Storage/Conversion Engineering (BK21 FOUR) of Graduate School, Hydrogen and Fuel Cell Research Center, Jeonbuk National University) ;
  • YOO, DONG JIN (Department of Energy Storage/Conversion Engineering (BK21 FOUR) of Graduate School, Hydrogen and Fuel Cell Research Center, Jeonbuk National University)
  • 투고 : 2022.05.11
  • 심사 : 2022.06.21
  • 발행 : 2022.06.30
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초록

Recently, research on the development of anion exchange membranes (AEMs) has received considerable attention from the scientific community around the world. Here, we fabricated a series of AEMs with branched structures with different alkyl spacers and conducted comparative evaluations. The introduction of these branched structures is an attempt to overcome the low ionic conductivity and stability problems that AEMs are currently facing. To this end, branched polymers with different spacer lengths were synthesized and properties of each membrane prepared according to the branched structure were compared. The chemical structure of the polymer was investigated by proton nuclear magnetic resonance, Fourier transform infrared, and gel permeation chromatography, and the thermal properties were investigated using thermogravimetric analysis. The branched anion exchange membrane with (CH2)3 and (CH2)6 spacers exhibited ionic conductivities of 8.9 mS cm-1 and 22 mS cm-1 at 90℃, respectively. This means that the length of the spacer affects the ionic conductivity. Therefore, this study showing the effect of the spacer length on the ionic conductivity of the membrane in the polymer structure constituting the ion exchange membrane is judged to be very useful for future application studies of AEM fuel cells.

키워드

과제정보

이 성과는 2020년도 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구입니다(No. 2020R1A2B5B01001458).

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