Proceedings of Materials for Sustainable Development Conference (MAT-SUS) (NFM22)
DOI: https://doi.org/10.29363/nanoge.nfm.2022.366
Publication date: 11th July 2022
The electrochemical CO 2 reduction reaction (CO 2 RR) is an attractive method to produce renewable fuel
and chemical feedstock using clean energy sources. Although copper (Cu) is a well-known electrocatalyst
for the electroreduction of CO 2 to multiple hydrocarbons, it suffers from poor selectivity, efficiency, and
stability. In this work, a novel bimetallic Cu-Pd alloy anchored on two-dimensional Ti 3 C2 Tx -MXene
nanosheets was further converted to highly conductive three-dimensional Cu-Pd/MXene aerogel, which
acts as an excellent electrocatalyst to reduce CO 2 to formate with high selectivity of 93% and current
density of 150 mA/cm 2 . Compared with Cu-Pd aerogel, the newly designed Cu-Pd/MXene aerogel could
effectively decrease the overpotential and enhance selectivity and current density with great stability
during a long-term reaction. This simple strategy represents an important step toward experimental
demonstration of 3D-MXenes-based electrocatalysts for CO 2 RR application and opens a new platform for
the fabrication of macroscale aerogel MXene-based electrocatalysts that can be used for a range of
applications, including nanocomposites, electronic devices, and all-liquid microfluidic devices.
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