Efficient electrocatalytic two-electron oxygen reduction over aminophenol formaldehyde resin-derived carbon microspheres

The electrocatalytic 2-electron oxygen reduction reaction (2e-ORR) to hydrogen peroxide (H₂O₂) required cheap and efficient electrocatalytic materials. Herein cheap 3-aminophenol formaldehyde resin microspheres were synthesized at a large scale of about 15 g in one run. By annealing it, nitrogen-doped carbon spheres could be conveniently obtained, which was found to be efficient electrocatalyst for 2e-ORR with the highest H₂O₂ selectivity of about 94% at 0.4 V vs RHE. The electrolysis H₂O₂ production rate over N-doped carbon in 0.1 M KOH solution reached 48 mmol g_cat^-1h⁻¹. Aminophenol formaldehyde resin-derived carbon provided a cheap and effective catalyst for electrocatalytic H₂O₂ production.