Promoting Oxide Pathway Mechanism on Low‐Ruthenium‐Content Oxides for Enhanced Oxygen Evolution in Proton Exchange Membrane Water Electrolyzer

matrix weakens the d-p orbital hybridization and attenuate the Ru─O covalency, thereby inhibiting the oxidation of lattice oxygen. In addition, the doped Mn reduces the OER free energy barrier by triggering the OPM, breaking the linear scaling relationship of OER.