Abstract
A two-step electrodeposition of CoMn2O4 and its chemical analogue CoMn(OH)x directly over Ni-foam yields an excellent water oxidation overpotential of 260 mA cm-2 with a Tafel slope of 29 mV dec-1 and a four-fold increase in turnover frequency. The enhanced efficacy of the composite catalyst is realized through synchronized redox pairs and superior carrier transport.
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