멤브레인 (Membrane Journal)

  • 제33권6호
  • /
  • Pages.416-426
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  • 2023
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  • 1226-0088(pISSN)
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  • 2288-7253(eISSN)
한국막학회 (The Membrane Society of Korea)
권호 표지
DOI QR코드

DOI QR Code

산화방지 작용기를 함유한 산화 그래핀이 도입된 과불소화계 복합 막의 고분자 전해질 막 연료전지로의 응용

Perfluorosulfonic Acid Composite Membranes Containing Antioxidant Grafted Graphene Oxide for Polymer Electrolyte Membrane Fuel Cell Applications

  • 황인혁 (경상국립대학교 나노신소재융합공학과) ;
  • 김기현 (경상국립대학교 나노신소재융합공학과)
  • Inhyeok Hwang (Department of Materials Engineering and Convergence Technology, Gyeongsang National University) ;
  • Kihyun Kim (Department of Materials Engineering and Convergence Technology, Gyeongsang National University)
  • 투고 : 2023.12.05
  • 심사 : 2023.12.17
  • 발행 : 2023.12.31
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초록

본 연구에서는 산화 방지 특성이 있는 가리워진 아민기를 함유한 산화 그래핀(hindered amine grafted graphene oxide, HA-GO)을 합성하여 이를 도입한 나피온(Nafion) 기반의 복합 막을 제조한 후 고분자 전해질 막 연료전지 시스템에 응용하였다. HA-GO는 4-아미노-2, 2, 6, 6-테트라메틸-4-피페리딘(4-amino-2, 2, 6, 6-tetramethyl piperidine)에 존재하는 아민기와 GO 표면에 존재하는 에폭시기의 개환 반응을 통해 제조하였으며, 합성된 HA-GO의 함량을 달리한 복합 막을 제조하여 순수 Nafion 막과 성능 특성을 비교하였다. HA-GO가 첨가된 복합 막은 Nafion 단일 막에 비해 기계적 물성, 화학적 안정성 및 수소이온 전도 특성이 향상되었다. 특히 HA-GO의 산화 방지 특성으로 인해 HA-GO가 첨가된 복합 막은 펜톤 평가(Fenton's test) 이후 수소이온 전도도의 유지 특성이 Nafion 단일 막에 비해 큰 폭으로 향상된 것을 확인할 수 있었다.

In this study, hindered amine-grafted graphene oxide (HA-GO) with antioxidant properties was prepared and incorporated into Nafion-based composite membranes as an effective filler material for polymer electrolyte membrane fuel cell applications. HA-GO was synthesized via a ring-opening reaction between amine groups in 4-amino-2, 2, 6, 6-tetramethyl piperidine and epoxy groups on the surface of GO. Nafion-based composite membranes containing different weight contents of HA-GO were fabricated to compare the polymer electrolyte membrane properties with those of the pure Nafion membrane. The composite membranes with HA-GO were found to have better mechanical properties, chemical stability, and proton conductivity than the pure Nafion membrane. In particular, the conductivity retention behavior confirmed by the decrease in proton conductivity after Fenton's test of the composite membranes was better than that of the pure Nafion membrane due to the incorporation of HA-GO with effective antioxidant properties.

키워드

과제정보

이 연구는 2023년도 정부의 재원으로 한국연구재단사업 (NRF-2022M3J7A1062940, NRF-2020R1A6A1A03038697, NRF-2022R1F1A1072548)의 지원을 받아 수행되었습니다.

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