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Article Abstract
Photoluminescence-based electrochemical microscopy enables micrometer-scale probing of electrode heterogeneity. Our results revealed a correlation between the potential-negative differential photoluminescence profile and the corresponding cyclic voltammogram. We further elucidated the structure-activity relationship linking interfacial heterogeneity to the electrocatalytic performance of electrodeposited CuO as a proof-of-concept experiment.
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