Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Effective Electrode Structure for the Stability of Alkaline Hydrazine Fuel Cells

알칼라인 하이드라진 연료전지 운전 안정성을 위한 전극 구조

  • Uhm, Sunghyun (Plant Process Development Center, Institute for Advanced Engineering) ;
  • Hong, Sujik (Ertl Center for Electrochemistry and Catalysis, School of Earth Sciences and Environmental Engineering, GIST) ;
  • Lee, Jaeyoung (Ertl Center for Electrochemistry and Catalysis, School of Earth Sciences and Environmental Engineering, GIST)
  • 엄성현 (고등기술연구원 플랜트공정개발센터) ;
  • 홍수직 (광주과학기술원 지구환경공학부, Ertl탄소비움연구센터) ;
  • 이재영 (광주과학기술원 지구환경공학부, Ertl탄소비움연구센터)
  • Received : 2019.11.08
  • Accepted : 2019.11.25
  • Published : 2019.12.10
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Abstract

Direct hydrazine fuel cells (DHFCs) have been considered to be one of the promising fuel cells because hydrazine as a liquid fuel possesses several advantages such as no emission of CO2, relatively high energy density and catalytic activity over platinum group metal (PGM)-free anode catalysts. Judging from plenty of research works, however, regarding key components such as electrocatalysts as well as their physicochemical properties, it becomes quite necessary to understand better the underlying processes in DHFCs for the long term stability. Herein, we highlight recent studies of DHFCs in terms of a systematic approach for developing cost-effective and stable anode catalysts and electrode structures that incorporate mass transport characteristics of hydrazine, water and gas bubbles.

하이드라진 직접 액체 연료전지는 이산화탄소를 배출하지 않으며, 높은 에너지 밀도를 가지고, 귀금속 촉매를 사용하지 않고도 높은 촉매 활성을 보이는 장점으로 유망한 연료전지로써 활발히 연구가 진행되어 왔다. 하지만, 고안전성 연료전지 운전 성능을 위해서는 전극촉매를 비롯한 핵심소재 개발 및 성능 연구를 토대로 연료의 물질전달 특성을 비롯한 하이드라진 연료전지 내에서 진행되고 있는 작동 프로세스를 충분히 이해할 필요성이 있다. 본 논문에서는 최근의 직접 하이드라진 연료전지 연구결과 중에 가격 경쟁력을 확보한 전극촉매 및 연료 확산, 물 관리, 기체 발생 측면에서 전극 구조 개발 동향을 소개하며 향후 개발 방향에 대해서 고찰하고자 한다.

Keywords

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