Efficient electrocoupling of CO2 and N2 to urea by a gas-penetrable Bi nanosheet-wrapped Cu hollow fiber

Abstract

A gas-penetrable electrode (GPE) composed of a Bi nanosheet array-wrapped Cu hollow fiber (Bi NSAs@Cu HF) is rationally designed and utilized for efficient electrocoupling of CO₂ and N₂ to produce urea with a yield of 79 μg h⁻¹ cm⁻², a faradaic efficiency (FE_urea) of 6.8%, and excellent cycling stability at −0.2 V vs. reversible hydrogen electrode (RHE).