Prof. Héctor D. Abruña
Title: Experimental and computational studies of energy systems.
Speaker: Prof. Héctor D. Abruña, Department of Chemistry & Chemical Biology, Center for Alkaline Based Energy Solutions (CABES), Energy Materials Center at Cornell (emc2) and Abruña Energy Initiative, Cornell University, New York, USA.
When: 11:30 CET, Tuesday, June 18th, 2024.
Place: Sala de Conferencias, Module 0, Faculty of Sciences, Universidad Autónoma de Madrid.
This presentation will deal with the use of operando methods for mechanistic studies energy systems with emphasis on fuel cells and battery materials and technologies. The presentation will begin with a brief overview of the methods employed with emphasis on the use of X-ray based methods, transmission electron microscopy (TEM) under active potential control, confocal Raman spectroscopy and microscopy DEMS (differential electrochemical mass spectrometry) coupled with SEIRAS (surface enhanced infra-red absorption spectroscopy) and scanning electrochemical microscopy (SECM). The utility of these methods will be illustrated by case studies focusing on metal nitride based non-precious metal electrocatalysts for the oxygen reduction reaction (ORR) in alkaline media, SEI (solid electrolyte interface) formation and Li metal deposition in Li/S batteries and the oxidation of ammonia. The presentation will conclude with an assessment of future directions.
