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http://dx.doi.org/10.9713/kcer.2022.60.3.321

Effect of Influent Gas on Mechanical Acceleration Durability Test of PEMFC Polymer Membrane  

Oh, Sohyeong (Department of Chemical Engineering, Sunchon National University)
Hwang, Byungchan (Department of Chemical Engineering, Sunchon National University)
Jung, Sunggi (SANG-A FRONTEC CO.Ltd)
Jeong, Jihong (SANG-A FRONTEC CO.Ltd)
Park, Kwonpil (Department of Chemical Engineering, Sunchon National University)
Publication Information
Korean Chemical Engineering Research / v.60, no.3, 2022 , pp. 321-326 More about this Journal
Abstract
As the thickness of the polymer membrane of PEMFC(Proton Exchange Membrane Fuel Cells) is getting thinner for PEMFC performance and price reduction, research on improving durability has become more important. In the durability evaluation of membranes, the mechanical durability evaluation time is more than twice that of the chemical durability evaluation time, so it is necessary to select the durability evaluation conditions well. In this study, we tried to check how much the mechanical durability evaluation time changes when there is a difference in the inflow gas type and flow rate in the mechanical durability evaluation protocol (Wet/Dry). When nitrogen was used at a flow rate of 2,000 mL/min, the evaluation time increased by 1.25 times compared to when air was used. An increase in the degradation rate of the electrode Pt was the main factor when air was used. When the flow rate was reduced to 800 mL/min, the air and nitrogen evaluation times increased by 1.5 times and 1.2 times, respectively.
Keywords
PEMFC; Membrane; Durability; AST; Mechanical degradation; Inflow gas;
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