Water Dynamics of Superacid Aromatic Proton Exchange Membranes for Fuel Cell Applications.

ABSTRACT: Proton exchange membranes (PEMs) with high conductivity are of critical importance for the development of fuel cells, electrolyzers, and other electrochemical technologies. In this research, poly(1,1,2,2-tetrafluoro-2-phenoxyethane-1-sulfonic acid) (PTPS) with an aromatic polymer main chain and a perfluorinated superacidic polymer side chain was synthesized. The water dynamics of PTPS were characterized across various length scales using a combination of Fourier-transform infrared spectroscopy (FTIR) and nuclear magnetic resonance (NMR) and compared with Nafion, a standard perfluorinated PEM, and sulfonated poly(ether sulfone) (SPES 40), an aromatic PEM without perfluorinated superacid side chains. The T ₁ and T ₂ relaxation times of water in the samples

SUBMITTER: Huang Z 

PROVIDER: S-EPMC11912528 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature