Electrode-modified block copoly-ionic liquid boosting the CO 2 reduction toward CO in water-based media

Domenico Grammatico , Pierre Marcasuzaa (1) , Aurelien Viterisi (1) , Antoine Bousquet (1) , Bao-Lian Su (2) , Laurent Billon (1)

1 IPREM - Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux
2 UNamur - Université de Namur [Namur]

Coupling polymer and ionic liquids with electrodes for catalysis is a promising tool for optimization of electrocatalytic CO2 reduction reaction (CO2RR). Here, block copolymer ionic liquids BCPILs were synthesized via controlled radical polymerization and nucleophilic post-substitution to introduce imidazole moieties. We show that, thanks to these PIL functionalities, the BCPIL/Re@HPC/GDL electrode can keep the selectivity toward CO when a higher amount of water is present in the electrolyte than the raw Re@HPC/GDL system. Our results help to understand the development of solid-state ionic liquids for enhanced CO2RR in water-based electrolyte.

Domaines: Chimie; Polymères

Domenico Grammatico, Pierre Marcasuzaa, Aurelien Viterisi, Antoine Bousquet, Bao-Lian Su, et al.. Electrode-modified block copoly-ionic liquid boosting the CO 2 reduction toward CO in water-based media. Chemical Communications, 2023, 59 (16), pp.2279-2282. ⟨10.1039/d2cc06451k⟩. ⟨hal-04015729⟩