%0 Journal Article
%T Cocatalysis: Role of Organic Cations in Oxygen Evolution Reaction on Oxide Electrodes
%J -
%D 2018
%R https://doi.org/10.1021/acsami.8b10232
%X Cocatalysis is a promising approach toward enhanced electrocatalytic activity. We report such synergic catalysis involving organic xanthylium-based catalyst, Xan2+, and oxides formed on the electrode surface. The oxygen evolution reaction (OER) was observed on some working electrodes (gold, platinum, glassy carbon, boron-doped diamond), while others (titanium and fluorine-doped tin oxide) exhibited no OER activity. On the basis of experimental data and supported by calculations, we propose a mechanism in which oxidized Xan2+ activates electrode toward the rate-determining O¨CO bond formation. In light of our findings, efficient OER electrocatalysis can be achieved using materials that strongly bind oxygen species and electron-deficient organic cations
%U https://pubs.acs.org/doi/10.1021/acsami.8b10232