Apr 8, 2025
4:15pm - 4:30pm
Summit, Level 4, Room 422
Yao Yang1
Cornell University1
Our recent study revealed the dynamic evolution through the life cycle from sub-10 nm spherical Cu nanocatalysts to metallic Cu nanograins as active sites for CO
2RR.
1 In this talk, we will use shape-controlled nanocatalysts as model systems to investigate their dynamic structural evolution under reaction conditions with
operando methods.
2 We will present our recent progress in developing multimodal
operando electrochemical liquid-cell scanning transmission electron microscopy (EC-STEM) and synchrotron-based X-ray methods to probe electrochemical dynamics of energy materials at solid-liquid interfaces across multiple spatiotemporal scales.
Operando electrochemical 4D-STEM in liquid, driven by machine learning, has shown great potential to interrogate complex structures of active sites of energy materials at solid-liquid interfaces.
References: 1Yang et al.
Nature 2023, 614, 262
2Yang* et al.
JACS 2024, 146, 23398