Asymmetric Oxo-Bridged ZnPb Bimetallic Electrocatalysis Boosting CO₂ -to-HCOOH Reduction.

ABSTRACT: Electrochemical CO₂ reduction (ECR) is one of the promising CO₂ recycling technologies sustaining the natural carbon cycle and offering more sustainable higher-energy chemicals. Zn- and Pb-based catalysts have improved formate selectivity, but they suffer from relatively low current activities considering the competitive CO selectivity on Zn. Here, lead-doped zinc (Zn(Pb)) electrocatalyst is optimized to efficiently reduce CO₂ to formate, while CO evolution selectivity is largely controlled. Selective formate is detected with Faradaic efficiency (FE_HCOOH ) of ≈95% at an outstanding partial current density of 47 mA cm^-2 in a conventional H-Cell. Zn(Pb) is further investigated in an electrolyte-fed device achieving a superior conversion

SUBMITTER: Mohamed AGA 

PROVIDER: S-EPMC8811806 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature