MIT researchers develop electrochemical CO2 capture method using NHI molecules to cut energy use

MIT researchers have published a study in Nature Energy on a new electrochemical approach to carbon capture that uses electricity instead of heat. The method relies on N-heterocyclic imine (NHI) molecules that can be tuned to capture CO2 without the extreme reducing conditions that hurt efficiency in earlier electrochemical systems. A bis(NHI) structure may capture two CO2 molecules per electron, which could lower the energy penalty compared to conventional amine scrubbing. The work is still at the lab stage, and the researchers note that understanding degradation pathways will be key to making the system durable enough for real world use. If the chemistry scales, electrochemical capture could integrate with renewable power and offer a flexible alternative to heat driven systems. For now, the main barrier is material stability and cycling performance under practical conditions.