Dealloying-derived nanoporous Sn-doped copper with prior selectivity toward formate for CO2 electrochemical reduction

Abstract

We report nanoporous Cu–Sn catalysts fabricated by chemically dealloying rapid solidified Al–Cu–Sn alloys for the CO₂RR. The np-Cu₁₁Sn₁ catalyst exhibits a three-dimensional interconnected ligament-channel network structure, which can efficiently convert CO₂ to formate with a Faradaic efficiency (FE) of 72.1% at −1.0 V (vs. RHE).