Manganese complexes have long been utilized by nature to catalyze the oxygen evolution reaction (OER) but mirroring their efficiency in artificial electrochemical systems has proven difficult. This study centers on alpha-manganese dioxide (α-MnO2), which closely mimics natural MnIV-O-MnIII-HxO motifs, presenting a novel method for manipulating proton coupling within the OER process using an external electric field.
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