Tailoring the active site for the oxygen evolution reaction on a Pt electrode

Electrocatalytic oxygen evolution is a key reaction for water splitting, but the detailed atomic structures of single-crystal electrodes under cycling conditions are still not fully understood. Here, the authors study the oxygen evolution activity on Pt(111) during potential cycling and find that the current density reaches a maximum in the third cycle and is nine times higher than that in the initial cycle, owing to a roughened Pt(111) surface and formation of islands and atomic vacancies in the second subsurface Pt layer.

# Chemistry

Kazuki Iizuka, Tomoaki Kumeda, Kota Suzuki, et al. (2022). "Tailoring the active site for the oxygen evolution reaction on a Pt electrode". Communications Chemistry. https://doi.org/10.1038/s42004-022-00748-7