"Efficient CO2 Electroreduction System for Emissions Reduction"

Researchers have developed a proton-exchange membrane system that efficiently reduces carbon dioxide (CO2) to formic acid using a catalyst derived from waste lead-acid batteries, achieving over 93% Faradaic efficiency when coupled with hydrogen oxidation. The system demonstrates nearly 91% single-pass conversion efficiency for CO2 at a current density of 600 mA cm−2 and cell voltage of 2.2 V, and has been shown to operate continuously for more than 5,200 h, offering a promising advancement in the development of carbon-neutral technologies.