Edson A. Ticianelli

TL;DR: In this paper, the authors reported improvements in performance of PEM fuel cells utilizing electrodes with only one-tenth of this platinum loading by incorporating a proton conductor (Nafion) into the electrode structure.

TL;DR: In this paper, the authors determined the kinetics of the ORR on the surfaces of single crystals of Au(111), Ag(111, Pd, Rh, Ir, and R...

TL;DR: In this paper, the performance of low catalyst loading gas diffusion electrodes for polymer electrolyte fuel cells is analyzed using theoretical models of the electrode structure and of the fuel cell system, and it is shown that most of the electrodes present limiting currents and some also show linear diffusion components arising from diffusion limitations in the gas channels and/or in the thin film of electrolyte covering the catalyst particles.

TL;DR: In this paper, the results of three methods used to attain high power densities in solid polymer electrolyte fuel cell systems were presented, i.e., use of a higher wt% Pt/C in the supported electrocatalysts, sputtering of a thin film of platinum (corresponding to a 50 nm film on a smooth surface) on the Prototech electrode, and a combination of the two methods.

TL;DR: In this paper, the effect of Pt particle size on the oxygen reduction electrocatalysis in both electrolytes is correlated with the predominant facets of the platinum crystallites, and the dc polarization and impedance results show clearly a duplication of the Tafel slope due to structural effects on the porous electrode.