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http://dx.doi.org/10.7316/KHNES.2021.32.5.308

Preparation and Characterization of the Polymeric Antioxidant for Improving the Chemical Durability of Polymer Electrolyte Membranes  

LEE, BYEOL-NIM (Fuel Cell Laboratory, Korea Institute of Energy Research)
KODIR, ABDUL (Fuel Cell Laboratory, Korea Institute of Energy Research)
LEE, HYEJIN (Fuel Cell Laboratory, Korea Institute of Energy Research)
SHIN, DONGWON (Fuel Cell Laboratory, Korea Institute of Energy Research)
BAE, BYUNGCHAN (Fuel Cell Laboratory, Korea Institute of Energy Research)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.32, no.5, 2021 , pp. 308-314 More about this Journal
Abstract
Chemical durability issue in polymer electrolyte membranes has been a challenge for the commercialization of polymer electrolyte membrane fuel cells (PEMFCs). In this study, we proposed a manufacturing method of Nafion composite membrane containing a stable polyimide antioxidant to improve the chemical durability of the membrane. The thermal casting of the Nafion solution with poly (amic acid) induced polyimide reaction. We evaluated proton conductivity, oxidative stability with ex-situ Fenton's test, and fluoride ion emission to analyze the effect of polyimide antioxidants. We confirmed that incorporating the polyimide antioxidant improves the chemical durability of the Nafion membrane while maintaining inherent proton conductivity.
Keywords
Polymer electrolyte membrane fuel cell; Oxidative degradation; Antioxidant; Polyimide; Chemical durability;
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