Ionomer engineering for optimized water channels in industry-scale water electrolysis using non-noble metal catalyst.

ABSTRACT: The application of non-noble metal catalysts to replace high-cost iridium plays a critical role in the industrialization of proton exchange membrane water electrolysis (PEMWE). However, the activity and stability of non-noble metal catalysts are unsatisfactory especially at high current densities. This can partially be attributed to the limited water channels of Nafion ionomer in the catalyst layer which impede proton hydrate transport, resulting in a low local pH and accelerating non-noble metal dissolution. We propose that introducing an amphiphilic-like CF₃CF₂CF₂CH₂OH molecule into Nafion ionomer (FOH-Nafion) via molecular engineering, optimizes the mass transfer of proton hydrates and therefore increase the stability of Co-based catalysts und

SUBMITTER: Yan Q 

PROVIDER: S-EPMC12635291 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature