Recent Advances in Single-Atom Electrocatalysts for Oxygen Reduction Reaction
Oxygen reduction reaction mechanism. (a) Oxygen reduction reaction pathway associated with 2e- or 4e- process. Reproduced from . (b) O and 2OH ORR mechanisms on near-continuous and SAECs (blue route: on Co-based SAECs; orange route: on Fe-based SAECs). Reproduced from .