A team from Lawrence Berkeley National Laboratory has developed a groundbreaking technique to investigate electrochemical processes at the atomic level, offering unparalleled resolution. This innovation involves a polymer liquid cell (PLC) that, when paired with transmission electron microscopy, enables the precise visualization of reactions in real-time. By freezing the cell at specific timepoints, scientists can observe composition changes throughout the reaction stages. The team's recent study focused on a copper catalyst system that transforms carbon dioxide into valuable carbon-based chemicals. Through advanced microscopy techniques, they discovered an 'amorphous interphase' at the solid-liquid interface during the reaction, challenging previous understanding and offering opportunities for improved catalyst design and performance. The insights gained from this research could revolutionize electrochemical technologies and lead to more selective and efficient production of desired carbon products. The team plans to apply this innovative approach to study various electrocatalytic materials, with the ultimate goal of enhancing the design and efficiency of electrochemical-driven technologies.