Seminários da Pós-Graduação
"Electrochemistry of platinum: new views on an old problem".
Dr. Marc T.M. Koper
Leiden Institute of Chemistry, Leiden University, The Netherlands
Data: 19/12 - quinta-feira as 9:30 h. Local: Miniauditório
Resumo: Platinum is the most used electrocatalyst in electrochemical energy conversion devices such as fuel cells and electrolysers. In this talk I will highlight the recent work of my group on understanding the surface chemistry of platinum in an aqueous electrolyte, by combining single-crystal electrochemistry, density functional theory calculations, ultra-high-vacuum modeling, in situ spectroscopy and in situ electrochemical scanning tunneling microscopy. I will challenge some existing explanations and interpretations of platinum electrochemistry, and show the sometimes surprising surface disordering of platinum that happens at both positive (anodic) and negative (cathodic) potentials.
Docente responsável: Pablo Sebastian Fernandez