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Optimizing Nafion loading and surface distribution of Nafion in the fuel cell electrode is critical for the fuel cell performance for minimizing ohmic and mass transport overpotentials. An atomic force microscopy method is used here for a qualitative and a quantitative discrimination between the ionomer and Pt in the fuel cell electrode. This work describes a methodology for the analysis of complex...
Using AFM single polymer molecule experiments we compare conformations of adsorbed on the mica substrate (in the isoelectric point) polyelectrolyte molecules (PE) of poly(methacryloyloxyethyl dimethylbenzylammonium chloride) at different concentrations of Na 3 PO 4 salt. We compare the conformations at solid–liquid interface (1) with the conformations of dry samples obtained if the...
This paper reviews recent achievements in atomic force microscopy of single polyelectrolyte molecules adsorbed on solid surfaces. Three parts of the review refer to the visualization of single polyelectrolyte molecules, single molecule force spectroscopy, and theoretical models for the interpretation of single molecule force spectroscopy experiments.
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