Revealing catalyst restructuring and composition during nitrate electroreduction through correlated operando microscopy and spectroscopy.

ABSTRACT: Electrocatalysts alter their structure and composition during reaction, which can in turn create new active/selective phases. Identifying these changes is crucial for determining how morphology controls catalytic properties but the mechanisms by which operating conditions shape the catalyst's working state are not yet fully understood. In this study, we show using correlated operando microscopy and spectroscopy that as well-defined Cu₂O cubes evolve under electrochemical nitrate reduction reaction conditions, distinct catalyst motifs are formed depending on the applied potential and the chemical environment. By further matching the timescales of morphological changes observed via electrochemical liquid cell transmission electron microscopy with time-resolved chemical state infor

SUBMITTER: Yoon A 

PROVIDER: S-EPMC12048347 | biostudies-literature | 2025 May

REPOSITORIES: biostudies-literature