Ultrathin FeCo-PBA Nanosheets as Highly Efficient Electrocatalysts for the Oxygen Evolution Reactions

Abstract

Ultrathin 4 nm FeCo-PBA nanosheets were fabricated for alkaline oxygen evolution reaction (OER), exhibiting an overpotential of 266 mV and a Tafel slope of 43.5 mV dec⁻1 at 10 mA cm⁻2. Density functional theory (DFT) calculations confirm the reduced energy barrier at the Co active site for the rate-determining step.