CAJ | 학술논문

为了研究燃料电池的耐久性，并对其衰退机理进行分析，本文在Greenlight平台上，对20片单体组成的功率为1 kW的电堆在DOE循环工况下进行90 h的耐久性实验。通过分析电堆在DOE循环工况下进行不同时段的电堆衰退曲线，整体的电堆衰退曲线以及电堆的极化曲线来考察电堆在DOE循环工况下的性能衰退。分析了电堆的衰退机理，并提出了自己的猜想并加以验证，得出催化剂的表面氧化造成的催化剂活性下降是引起质子交换膜燃料电堆的性能衰退的主要原因。
위료연구연료전지적내구성，병대기쇠퇴궤리진행분석，본문재Greenlight평태상，대20편단체조성적공솔위1 kW적전퇴재DOE순배공황하진행90 h적내구성실험。통과분석전퇴재DOE순배공황하진행불동시단적전퇴쇠퇴곡선，정체적전퇴쇠퇴곡선이급전퇴적겁화곡선래고찰전퇴재DOE순배공황하적성능쇠퇴。분석료전퇴적쇠퇴궤리，병제출료자기적시상병가이험증，득출최화제적표면양화조성적최화제활성하강시인기질자교환막연료전퇴적성능쇠퇴적주요원인。
In order to study the durability of fuel cells and analyze the mechanism of recession , the Green-lightg500 test station platform was use to test the durability of the fuel cells which is consisted by 20 pieces of fuel cell monomer with 1kW stack power in DOE cycle durability test for 90h.Throughsurvey the recession curves in different times and the Polarization curves using the DOE MEA/Stack Durability Protocol , we analysis the Mech-anism of recession and raise our own hypotheses .Finally, we conclude that catalyst activity decline caused by catalyst surface oxidation state change is the main source of performance degradation of the stack .