About microenvironments and stability in CO2 (photo)electroreduction
Francesca Maria Toma a
a Institute of Functional Materials, Helmholtz Zentrum Hereon
b Lawrence Berkeley National Laboratory, Berkeley, CA, USA
Materials for Sustainable Development Conference (MATSUS)
Proceedings of MATSUS Spring 2025 Conference (MATSUSSpring25)
CO2 electrocatalysis for sustainable fuels and chemicals - #CATSUS
Sevilla, Spain, 2025 March 3rd - 7th
Organizers: Carlota Bozal-Ginesta and Alessandro Senocrate
Invited Speaker, Francesca Maria Toma, presentation 435
DOI: https://doi.org/10.29363/nanoge.matsusspring.2025.435
Publication date: 16th December 2024

(Photo)electrochemical conversion of solar energy represents a sustainable approach for generating chemical fuels, such as hydrogen (H₂) and hydrocarbons. Recent advances have highlighted the potential of PEC systems to drive convert carbon dioxide (CO₂) into various hydrocarbons. Despite these advancements, several critical challenges persist, particularly regarding the selectivity of the systems and the suboptimal efficiency and limited long-term stability of current PEC systems. Overcoming these limitations is crucial for realizing the full potential of PEC technology in renewable fuel production and for its broader adoption within the energy sector.

Here we will share the most recent results in our group on two main aspects regarding (photo)electrochemical CO2 reduction. On the one hand, we will focus on the importance of the microenvironment in determining and tuning selectivity by changing the local environment on metal electrodes or the chemical environment of metal centers otherwise selective for H2 production. On the other hand, we will show examples of stabilized and stable system for CO2 (photo)electroreduction.

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