Membrane Journal (멤브레인)

The Membrane Society of Korea (한국막학회)
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Recent Developments in Ion-Exchange Nanocomposite Membranes for Energy Applications

에너지용 이온 교환 복합막 최근 연구 개발 동향

  • Hwang, Doo Sung (Department of Chemical Engineering, University of Illinois at Chicago) ;
  • Chung, Tiffany (Department of Chemical Engineering, University of Illinois at Chicago) ;
  • Wang, Tongshuai (Department of Chemical Engineering, University of Illinois at Chicago) ;
  • Kim, Sangil (Department of Chemical Engineering, University of Illinois at Chicago)
  • 황두성 (시카고 일리노이 주립대학교 화학공학과) ;
  • 티파니 청 (시카고 일리노이 주립대학교 화학공학과) ;
  • 통슈아이 왕 (시카고 일리노이 주립대학교 화학공학과) ;
  • 김상일 (시카고 일리노이 주립대학교 화학공학과)
  • Received : 2016.12.21
  • Accepted : 2016.12.27
  • Published : 2016.12.31
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Abstract

In the last decade, various types of energy harvesting and conversion systems based on ion exchange membranes (IEMs) have been developed for eco-friendly power generation and energy-grid systems. In these membrane-based energy systems, high ion selectivity and conductivity properties of IEMs are critical parameters to improve efficiency of the systems such as proton exchange membrane fuel cells, anion exchange membrane fuel cells, redox flow batteries, water electrodialysis for hydrogen production, and reverse electrodialysis. This article suggests variable approaches to overcome trade-off limitation of polymeric membrane ion transport properties by reviewing various types of composite ion-exchange membranes including novel inorganic-organic nanocomposite membrane, surface modified membranes, cross-linked and pore-filled membranes.

최근 이온 교환 고분자 전해질 막을 활용한 고효율 에너지 전환 및 저장 장치에 대한 연구가 활발히 이루어지고 있다. 고분자 전해질 연료전지, 레독스 흐름전지 및 역전기투석 등 다양한 에너지 시스템에서 에너지 효율 향상을 위해 이온교환 전해질 막의 양/음이온의 선택적 수송 거동이 중요시되고 있다. 본 총설은 각각의 고효율 전해질 전지 시스템에 따라 요구되는 다양한 이온 교환막의 선택적 양/음이온 투과 거동의 한계점을 고찰하고, 한계를 극복하기 위한 다양한 구조의 고분자 이온 교환 복합막의 장점 및 단점을 정리하였다. 고분자 가교법 및 다공성 지지체 복합막 이외에 다양한 구조의 신규다공성 무기 나노입자를 유-무기 이온교환 복합막에 도입하는 시도가 이루어지고 있는 동시에, 이온 선택도 향상을 위한 다양한 형태의 표면 개질 방법이 개발되고 있으며, 이를 통해 이온 교환 복합막의 선택적 양/음이온 거동의 한계를 극복하는 전략을 제시하고 있다.

Keywords

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