공기극의 조건의 변화가 막가습기를 포함한 고분자 전해질막 연료전지내의 물 함량에 미치는 영향에 대한 해석적 연구

Polymer Electrode Membrane Fuel Cell s(PEMFCs) are largely used in vehicle such as automobile for high responsibility and high energy density. According to necessity of miniaturization of automobile, fuel cell systems operating in high pressure are used in these days. In order to reach high efficiency membrane humidifiers are also utilized in fuel cells. There are some needs to analyze water contents of this new concept fuel cell. By increasing pressure, activities in fuel cells are increased, this means that operation in high pressure have advantage in flooding. In addition, membrane humidifier can prevent dry out in PEMFCs. To suggest optimal pressure range for high efficiency, this study conducts numerical analysis of changes of efficiency of PEMFCs as changing activity in 1D, steady state. Also, this paper analyzes fuel cell performance with membrane humidifier as activity changing with pressure change.