Revealing the heterogeneity of electrode surfaces using in situ photoluminescence electrochemical microscopy

Yucheng Li; Yihan Qian; Yujing Zhu; Beile Xiang; Xuan Dang; Zhuoying Li; Lu-Nan Zhang; Qin Xu; Wei Liu; Cheng Ma

doi:10.1039/D5AN00820D

Revealing the heterogeneity of electrode surfaces using in situ photoluminescence electrochemical microscopy

Yucheng Li,

^a Yihan Qian,^a Yujing Zhu,^a Beile Xiang,^a Xuan Dang,^a Zhuoying Li,^b Lu-Nan Zhang,

^a Qin Xu,

*^a Wei Liu

*^a and Cheng Ma

*^a

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* Corresponding authors

^a School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, P. R. China

^b Guangling College of Yangzhou University, Yangzhou University, Yangzhou, P. R. China

Abstract

Photoluminescence-based in situ 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 Cu₂O as a proof-of-concept experiment.

This article is part of the themed collection: Analyst HOT Articles 2025

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Revealing the heterogeneity of electrode surfaces using in situ photoluminescence electrochemical microscopy

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