Recent progress in heteroatom-doped carbon electrocatalysts for the two-electron oxygen reduction reaction

Coordination engineering of atomically dispersed zirconium on graphene for the oxygen reduction reaction

“…This further confirms that the 4e − mechanism is favorable for all active sites since the 2e − mechanism is preferred if *OOH binds too weakly. 45 The active sites with the smallest ORR overpotential are O–Zr–N 4 –B and O–Zr–N 1 –C 2 –S. The physical reasoning behind the enhancement of ORR performance is discussed in the next section.…”

Recent advances in electrosynthesis of H2O2via two-electron oxygen reduction reaction

“…where E 0 represents the standard equilibrium potential, while RHE refers to the reversible hydrogen electrode. 5)- (7).…”

“…1a), along with the recycling of excessive organic solvent and distillation of H 2 O 2 from the reaction mixture. 6,7 These disadvantages result in high costs, excessive energy consumption, and multiple operations. These limitations have prompted researchers to investigate alternative, environmentally friendly technologies for synthesizing H 2 O 2 .…”

Non‐precious Metal Catalysts for Two‐Electron Oxygen Reduction Reaction

“…The catalysts for the four-electron ORR include Pt-based catalysts (Pt/C), MeÀ N x (Me=Fe, Co, and so on), [15][16][17][18][19] and heteroatom (B,N)-doped carbon. [20][21][22][23] Compared to the full ORR, the two-electron ORR has not attracted much attention and is regarded as a side reaction that deteriorates the Nafion membrane of fuel cell devices. [5,24] However, in the last few years, the two-electron ORR has received a great deal of attention in light of the massive demand for environmentally-friendly synthesis of H 2 O 2 , and numerous studies have been devoted to the development of electrocatalysts for the two-electron ORR.…”