On-line characterization of PEM's oxygen permeability for PEM fuel cell by embedded microelectrode method
Shangshu Wang and Liuli Zeng are co-first authors of the article.
Funding information: Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory, Grant/Award Number: XHD2020-002-04; National Natural Science Foundation of China, Grant/Award Number: 21975192
Summary
Pt-doped proton exchange membranes (PEMs) can effectively reduce oxygen permeation and thus enhance the durability of PEM, which have been widely employed in fuel cell. However, until now, no study related to the oxygen permeation capability of Pt-doped PEM during actual operation has been reported. In this article, the oxygen permeation of Pt-doped PEM under fuel cell operation is analyzed by the embedded microelectrode method. The test results show that the anode/cathode pressure difference is the main influencing factor for the oxygen permeation of the PEM: the oxygen permeation behavior of the Pt-free PEM exists and gradually decreases with an increase in the anode/cathode pressure difference, and the oxygen permeation behavior of the PEM disappears when the pressure difference exceeds 60 kPa. Due to the presence of Pt nanoparticles, the Pt-doped PEM exhibits negligible oxygen permeation in the anode/cathode pressure difference from −100 kPa to 100 kPa and demonstrates excellent oxygen consumption ability.
Open Research
DATA AVAILABILITY STATEMENT
The data that support the findings of this study are available from the corresponding author upon reasonable request.
