Inverse potential scaling in co-electrocatalytic activity for CO₂ reduction through redox mediator tuning and catalyst design.

ABSTRACT: Electrocatalytic CO₂ reduction is an attractive strategy to mitigate the continuous rise in atmospheric CO₂ concentrations and generate value-added chemical products. A possible strategy to increase the activity of molecular systems for these reactions is the co-catalytic use of redox mediators (RMs), which direct reducing equivalents from the electrode surface to the active site. Recently, we demonstrated that a sulfone-based RM could trigger co-electrocatalytic CO₂ reduction via an inner-sphere mechanism under aprotic conditions. Here, we provide support for inner-sphere cooperativity under protic conditions by synthetically modulating the mediator to increase activity at lower overpotentials (inverse potential scaling). Furthermore, we show that b

SUBMITTER: Reid AG 

PROVIDER: S-EPMC9400620 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature