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

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Load Variation Removal and Stack Durability Experiments to Improve Lifetime of Fuel Cell Stack for Hydrogen Electric Vehicles

수소전기차 연료전지 수명 향상을 위한 부하 변동 제거 및 스택 내구성 실험

  • DONGWON LEE (Fuel Cell Research & Demonstration Center, Korea Institute of Energy Research) ;
  • BEOMJUN KIM (Fuel Cell Research & Demonstration Center, Korea Institute of Energy Research) ;
  • SEOUNGRO LEE (Department of Mechanical Engineering, Jeonbuk National University Graduate School)
  • 이동원 (한국에너지기술연구원 연료전지실증연구센터) ;
  • 김범준 (한국에너지기술연구원 연료전지실증연구센터) ;
  • 이승로 (전북대학교 대학원 기계공학과)
  • Received : 2024.06.13
  • Accepted : 2024.07.25
  • Published : 2024.08.30
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Abstract

Load variations reduce the lifespan of polymer electrolyte fuel cells (PEFCs). To analyze the impact of load variations on durability of PEFCs, two stacks were built and operated continuously for 400 hours, one under load variations and the other under constant current condition with the same energy output. Using the example model provided by Mathworks, we obtained load variation data for the experiments. The performance curves were measured every 100 hours and analyzed by current interruption method and electrochemical impedance spectroscopy. The degradation comparison shows a much larger decrease in performance under the load variation. The activation resistance, electrical resistance, and mass transfer resistance are all found to increase more.

Keywords

Acknowledgement

이 논문은 2024 정부(산업통상자원부)의 재원으로 한국에너지기술평가원의 지원을 받아 수행된 연구임(과제번호: 20229A10100070, 과제명: 고분자전해질[PEM] 연료전지로부터 저탄소 백금 촉매 원료화 기술 개발).

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