Metasurface-driven surface-enhanced infrared absorption spectroscopy for superior characterization of electrocatalytic reactions

Understanding electrocatalytic processes is crucial to realize the transition toward a sustainable zero-carbon future. Surface-enhanced infrared absorption spectroscopy (SEIRAS) is a suitable method to monitor the mechanisms of these processes with chemical specificity. However, it remains difficult to detect many relevant aspects of electrochemical reactions such as short-lived intermediates. Here, we demonstrate an integrated nanophotonic-electrochemical SEIRAS platform for the in-situ investigation of molecular signal traces emerging during electrochemical experiments.