The electrochemical reduction of carbon dioxide dissolved in a solution of water and ionic liquid as electrolyte, at high-pressure and near room-temperature, is reported. This work describes an electro-deposition strategy for the preparation of copper substrate cathodes, coated with bimetallic zinc–copper films, obtained from deep-eutectic solvents plating baths. The prepared bimetallic cathodes showed electrochemical activity for syngas production in 1-butyl-3-methylimidazolium triflate, with yields of 85 NμL (normal microliter) cm−2 C−1/170 NμL cm−2 h−1, high selectivities, tunable H2/CO ratio and low energetic requirements.
- Carbon dioxide
- Ionic liquids
- Copper–zinc alloys
Pardal, T., Messias, S., Sousa, M., Machado, A. S. R., Rangel, C. M., Nunes, D., ... da Ponte, M. N. (2017). Syngas production by electrochemical CO2 reduction in an ionic liquid based-electrolyte. Journal of CO2 Utilization, 18, 62-72. https://doi.org/10.1016/j.jcou.2017.01.007