Positively charged second coordination sphere in molecular CO2 electroreduction

Molecular electrocatalysts for CO 2 reduction typically suffer from scaling relationships, in which a fast catalyst needs large overpotentials, limiting the development of efficient catalytic systems, which work at high rates and low energy inputs. Introduction of pendent positively charged groups in the ligand framework has proven to be an efficient strategy to break such relationships. This revision presents the different molecular electrocatalysts for CO 2 reduction, whose second coordination sphere has been decorated with positively charged groups, enabling improved catalytic performances.