조유연 조은애 김정현 2024-01-20T21:02:04Z 2024-01-20T21:02:04Z 2021-09-06 2009-08 1738-7264 https://pubs.kist.re.kr/handle/201004/132255 To investigate degradation mechanism of PEMFC operated with repetitive startup/shutdown cycling, i-V characteristics, impedance, cyclic voltamograms were measured. OCV decreased from 0.967 to 0.951 V while the cell voltage at 800mA/cm2 from 0.657 to 0.563V, implying that the electrodes rather than membrane electrolyte was damaged during the cycling operation. Electrochemical analyses supported that the performance degradation could be mainly attributed to degradation of the electrodes such as a decrease in electrochemical active surface area rather than degradation of membrane. Korean 한국수소및신에너지학회 시동/정지 반복에 따른 고분자전해질 연료전지의 성능 저하에 관한 연구 A Study on Performance Degradation of PEMFC by Repetitive Startup/Shutdown Cycling Article 2 한국수소및신에너지학회논문집, v.20, no.4, pp.317 - 322 한국수소및신에너지학회논문집 20 4 317 322 kci ART001374156 PEMFC Degradation Startup/Shutdown Dummy load 고분자전해질 연료전지 열화 시동/정지 더미 저항