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

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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A Study on the Change of Mechanical Property According to the Aging of Polymer Electrolyte Membrane

고분자전해질막의 노후화에 따른 기계적 특성 변화에 관한 연구

  • KIM, SEUNGHWAN (Graduate School of Mechanical Engineering, Kumoh National Institute of Technology) ;
  • EO, JUNWOO (Graduate School of Mechanical Engineering, Kumoh National Institute of Technology) ;
  • SEO, YOUNGJIN (Department of Mechanical Engineering, Kumoh National Institute of Technology) ;
  • HWANG, CHULMIN (Natural Energy Lab. Co.,Ltd) ;
  • JUNG, YOUNGGUAN (Department of Mechanical Engineering, Kumoh National Institute of Technology)
  • 김승환 (금오공과대학교 대학원 기계공학과) ;
  • 어준우 (금오공과대학교 대학원 기계공학과) ;
  • 서영진 (금오공과대학교 기계공학과) ;
  • 황철민 ((주)자연에너지연구소) ;
  • 정영관 (금오공과대학교 기계공학과)
  • Received : 2022.03.31
  • Accepted : 2022.04.18
  • Published : 2022.04.30
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Abstract

Since the various characteristics of the polymer electrolyte membrane are not clearly identified, it is difficult to predict and design applications for various conditions. In this study, as a previous study on the aging of the polymer electrolyte membrane, a study was conducted on the change of mechanical properties according to the aging of the polymer electrolyte membrane. Through the tensile test of Nafion 117, the mechanical properties change due to aging was confirmed. As a result of the tensile test, it was confirmed that the aged Nafion 117 had reduced tensile strength. Through DSC measurement, aged Nafion confirmed that the glass transition temperature and enthalpy change were low, which is thought to be the effect of molecular motion and transition due to the lapse of time. The effect is thought to cause a difference in the amount of change in enthalpy, resulting in a difference in mechanical properties during tension.

Keywords

Acknowledgement

본 연구는 금오공과대학교 학술연구비의 지원을 받아 수행한 연구과제(2021년)입니다.

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