CEEN: A Control Software for Coupled Electrochemistry, EPR, and NMR for Redox Flow Battery and Electrosynthesis Research

We present CEEN (coupled electrochemistry, EPR, and NMR), a Python package designed for coupled and integrated control of Bruker benchtop NMR, benchtop EPR, and Gamry electrochemical workstations. The software enables synchronized acquisition and real-time visualization of electrochemical, NMR, and EPR data, simplifying operando measurements that traditionally require three independent control interfaces. We demonstrate CEEN through practical applications relevant to aqueous organic and inorganic redox flow battery (RFB) and electrochemical synthesis research. The same setup can be readily used to study any (electrochemical) flow process using magnetic resonance. CEEN streamlines the data acquisition workflow, enabling robust and information-rich operando NMR and EPR studies.