Boosting Alcohol Oxidation Electrocatalysis with Multifactorial Engineered Pd1/Pt Single-Atom Alloy-BiOx Adatoms Surface

A unique catalyst surface where ultrathin Pt edges are modified by the isolated Pd atoms and BiO x adatoms is rational designed and achieved. The Pd 1 /Pt-BiO x electrocatalyst exhibits an ultrahigh mass activity of 16.01 A mg −1 Pt+Pd toward ethanol oxidation and enables a direct ethanol fuel cell of peak power density of 56.7 mW cm −2 . The surrounding BiO x adatoms are critical for mitigating CO-poisoning on Pt surface, and the Pd 1 /Pt single-atom alloy further facilitates the electrooxidation of CH 3 CH 2 OH.