조창환 김용찬 장영수 2024-01-20T23:33:58Z 2024-01-20T23:33:58Z 2022-01-10 2008-03 1229-6422 https://pubs.kist.re.kr/handle/201004/133668 DMFC(Direct Methanol Fuel Cell) is one of promising candidates for power sources of small mobile IT devices like notebook, cell phone, and so on. Efficient operation of fuel cell system is very important for long-sustained power supply because of limited fuel tank size. It is necessary to investigate operation characteristics of fuel cell stack for optimal control of DMFC system. The generated voltage was modeled according to various operating condition; methanol concentration, stack temperature, and load current. It is inevitable for methanol solution at anode to cross over to cathode through MEA(membrane electrode assembly), which reduces the system efficiency and increases fuel consumption. In this study, optimal operation conditions are proposed by analyzing stack performance model, cross-over phenomenon, and system efficiency. Korean 대한설비공학회 메탄올 농도에 따른 직접 메탄올 연료전지의 성능 해석 Performance Characteristics of Direct Methanol Fuel Cell with Methanol Concentration Article 2 설비공학 논문집, v.20, no.3, pp.197 - 204 설비공학 논문집 20 3 197 204 N kci ART000879254 Direct methanol fuel cell system efficiency Static model Crossover