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• W4386402291 endingPage "14323" @default.
• W4386402291 startingPage "14315" @default.
• W4386402291 abstract "The preparation method of membrane electrode assemblies (MEAs) is a key factor that determines their electrochemical performance and lifespan. In this study, we develop a novel preparation method based on a wet-combining interface forming strategy for fabricating a high-performance MEA with an ultrathin proton exchange membrane (PEM). Through this method, an integrated MEA (R-MEA), assembled with an ultrathin (<10 μm) membrane reinforced with expanded polytetrafluoroethylene (ePTFE), is fabricated. In the wet-combining process, the liquid perfluorosulfonic acid (PFSA) ionomer sufficiently adheres to the surface of the three-dimensional (3D) catalyst layer (CL) of the gas diffusion electrode (GDE), thus forming a 3D coupling interface between the PEM and the cathode CL. Such a tight 3D PEM/cathode CL interface enlarges the contact area between the PEM and the cathode CL, thereby increasing the triple-phase boundary for the oxygen reduction reaction. On this basis, the novel R-MEA exhibits a significantly higher electrochemical surface area and a superior power performance compared to a conventional MEA (C-MEA) prepared by the catalyst-coated membrane method. Furthermore, the introduction of the ePTFE reinforcement in the PEM makes R-MEA possess a hydrogen crossover current close to that of C-MEA (which has a commercial GORE-SELECT membrane as its PEM). After 1000 cycles of wet/dry conditions, the R-MEA still maintains its superior power performance and a stable hydrogen crossover current, thus demonstrating its excellent mechanical durability." @default.
• W4386402291 created "2023-09-04" @default.
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• W4386402291 date "2023-09-03" @default.
• W4386402291 modified "2023-09-28" @default.
• W4386402291 title "A High-Performance Membrane Electrode Assembly with an Ultrathin Proton Exchange Membrane Based on a Wet-Combining Interface Forming Strategy" @default.
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• W4386402291 doi "https://doi.org/10.1021/acs.energyfuels.3c02168" @default.
• W4386402291 hasPublicationYear "2023" @default.
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