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NTIS 바로가기전기화학회지 = Journal of the Korean Electrochemical Society, v.12 no.1, 2009년, pp.11 - 25
유성종 (서울대학교 화학생물공학부) , 전태열 (서울대학교 화학생물공학부) , 성영은 (서울대학교 화학생물공학부)
Fuel cells are expected to be one of the major clean new energy sources in the near future. However, the slow kinetics of electrocatalytic hydrogen oxidation reaction (HOR) and oxygen reduction reaction (ORR), and the high loading of Pt for the anode and cathode material are the urgent issues to be ...
핵심어 | 질문 | 논문에서 추출한 답변 |
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연료전지로부터 발생된 전기에너지는 어떤 방식으로 활용 가능하다 보는가? | 1) 즉, 태양에너지를 변환하여 수소를 생산하면 이는 적절한 저장장치를 거쳐 연료전지의 연료로 활용될 수 있다.2) 또한 연료전지로부터 발생된 전기에너지는 직접 여러 용도에 이용되거나, 2차전지 또는 초고용량 캐패시터에 저장되었다가 필요한 용도에 활용될 수 있다. 연료전지는 전해질의 종류에 따라 여러 형태가 가능하나 그 중에서도 고분자 연료전지 (PEMFC)가 분산 에너지 이용시스템에 가장 적당한 것으로 판단된다. | |
순수하지 않은 수소 연료가 주입되었을 때 백금 연료극에 문제가 생기는 이유는? | 일반적으로 수소산화 반응이 백금 표면에서 매우 빠르게 반응이 일어나지만, 천연가스나 메탄올, 에탄올과 같은 순수하지 않은 수소 연료를 연료극에 주입했을 때 백금 연료극에 큰 문제를 일으킨다. 그 이유는 소량의 CO가 수소 연료에 있을 경우 백금은 쉽게 피독되기 때문에 더 이상 수소산화 촉매로서 역할을 못하게 된다. 백금의 또 다른 문제점은 백금의 높은 가격을 들 수 있는 데, 이것은 연료전지를 상업화 하는데 큰 장애가 되고 있다. | |
수소 에너지를 이용하는 시스템으로 무엇이 가장 떠오르는가? | 수소 에너지를 이용하는 시스템으로는 연료 전지가 가장 유망하며, 미래 사회의 분산 에너지이용 시스템에서 연료전지는 핵심적인 역할을 할 것으로 기대된다.1) 즉, 태양에너지를 변환하여 수소를 생산하면 이는 적절한 저장장치를 거쳐 연료전지의 연료로 활용될 수 있다. |
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