Insertion of MXene-Based Materials into Cu–Pd 3D Aerogels for Electroreduction of CO₂ to Formate

Insertion of MXene-Based Materials into Cu–Pd 3D Aerogels for Electroreduction of CO₂ to Formate

Abdinejad, M. (TU Delft ChemE/Materials for Energy Conversion and Storage)
Subramanian, S.S. (TU Delft ChemE/Materials for Energy Conversion and Storage)
Motlagh, Mozhgan Khorasani (University of Toronto)
Ripepi, D. (TU Delft ChemE/Materials for Energy Conversion and Storage)
Pinto, D. (TU Delft ChemE/Catalysis Engineering)
Li, Mengran (TU Delft ChemE/Materials for Energy Conversion and Storage)
Middelkoop, J. (TU Delft ChemE/O&O groep)
Urakawa, A. (TU Delft ChemE/Catalysis Engineering)
Burdyny, T.E. (TU Delft ChemE/Materials for Energy Conversion and Storage)

2023

The electrochemical CO₂ reduction reaction (CO₂RR) is an attractive method to produce renewable fuel and chemical feedstock using clean energy sources. Formate production represents one of the most economical target products from CO₂RR but is primarily produced using post-transition metal catalysts that require comparatively high overpotentials. Here a composition of bimetallic Cu–Pd is formulated on 2D Ti₃C₂T_x (MXene) nanosheets that are lyophilized into a highly porous 3D aerogel, resulting in formate production much more efficient than post-transition metals. Using a membrane electrode assembly (MEA), formate selectivities >90% are achieved with a current density of 150 mA cm⁻² resulting in the highest ever reported overall energy efficiency of 47% (cell potentials of −2.8 V), over 5 h of operation. A comparable Cu-Pd aerogel achieves near-unity CO production without the MXene templating. This simple strategy represents an important step toward the experimental demonstration of 3D-MXenes-based electrocatalysts for CO₂RR application and opens a new platform for the fabrication of macroscale aerogel MXene-based electrocatalysts.

CO Electrolysis
Copper-based electrocatalysts
formate
Membrane-electrode assemblies
MXene

http://resolver.tudelft.nl/uuid:0538812d-5dad-4ed9-b46a-672bad9894e7

https://doi.org/10.1002/aenm.202300402

1614-6832

Advanced Energy Materials, 13 (19)

Institutional Repository

journal article

© 2023 M. Abdinejad, S.S. Subramanian, Mozhgan Khorasani Motlagh, D. Ripepi, D. Pinto, Mengran Li, J. Middelkoop, A. Urakawa, T.E. Burdyny, More Authors