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

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Simultaneous Improvement of Dimensional Stability and Ionic Conductivity of QPAE/TiO2-x Composite Membranes According to TiO2 Content Control for Anion Exchange Membrane Fuel Cells

음이온교환막 연료전지를 위한 TiO2 함량 조절에 따른 QPAE/TiO2-x 복합막의 치수안정성 및 이온전도도 동시 개선 연구

  • KIM, SANG HEE (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)
  • 김상희 (전북대학교 대학원 에너지저장/변환공학과(BK21 FOUR), 수소.연료전지연구센터) ;
  • 유동진 (전북대학교 대학원 에너지저장/변환공학과(BK21 FOUR), 수소.연료전지연구센터)
  • Received : 2021.12.14
  • Accepted : 2022.01.25
  • Published : 2022.02.28
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Abstract

A series of QPAE/TiO2-x (x = 1, 4, 7 and 10 wt%) organic/inorganic composite membranes were prepared as electrolyte membranes for alkaline anion exchange membrane fuel cells by controlling the content of inorganic filler with quaternized poly(arylene ether) (QPAE) random copolymer. Among the prepared QPAE/TiO2-x organic/inorganic composite membranes, the highest ionic conductivity was 26.6 mS cm-1 at 30℃ in QPAE/TiO2-7 composite membrane, which was improvement over the ionic conductivity value of 6.4 mS cm-1 (at 30℃) of the pristine QPAE membrane. Furthermore, the water uptake, swelling ratio, ionic exchange capacity, and thermal property of QPAE/TiO2-x composite membranes were improved compared to the pristine QPAE membrane. The results of these studies suggest that the fabricated QPAE/TiO2-x composite membranes have good prospects for alkaline anion exchange membrane fuel cell applications.

Keywords

Acknowledgement

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

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