Electrosorption of carbon dioxide on platinum group metals and alloys—a review

The review summarizes the studies on the phenomenon of carbon dioxide electrosorption on platinum group metals and alloys. This subject is strictly linked to the research in the field of electrocatalysis and fuel cells. The work aims to present current knowledge on the processes of CO₂ electrosorption and the adsorbate oxidation on Pt, Rh, and their alloys as well as on the influence of various factors on the electrochemical behavior of reduced CO₂ on these materials. The experimental methods commonly applied in these investigations are characterized from the point of view of their ability to determine the nature of the adsorbate. The problem of similarities and differences between reduced CO₂ and adsorbed CO is also discussed.