April 7 - 11, 2025
Seattle, Washington
Symposium Supporters
2025 MRS Spring Meeting & Exhibit
MT04.04.08

Operando Studies of Dynamic Evolution of Electrocatalysts Under CO2 Reduction

When and Where

Apr 8, 2025
4:15pm - 4:30pm
Summit, Level 4, Room 422

Presenter(s)

Co-Author(s)

Yao Yang1

Cornell University1

Abstract

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 CO2RR.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

Keywords

spectroscopy

Symposium Organizers

Shoji Hall, Johns Hopkins University
Megan Jackson, University of North Carolina at Chapel Hill
Yao Yang, Cornell University
Emil Hernandez-Pagan, University of Delaware

Session Chairs

Shoji Hall
Emil Hernandez-Pagan
Megan Jackson

In this Session