Activity–Stability Trends for the Oxygen Evolution Reaction on Monometallic Oxides in Acidic Environments

Journal Article · Thu Jul 17 00:00:00 EDT 2014 · Journal of Physical Chemistry Letters

DOI:https://doi.org/10.1021/jz501061n· OSTI ID:1355455

Danilovic, Nemanja; Subbaraman, Ramachandran; Chang, Kee-Chul; Chang, Seo Hyoung; Kang, Yijin J.; Snyder, Joshua; Paulikas, Arvydas P.; Strmcnik, Dusan; Kim, Yong-Tae; Myers, Deborah; Stamenkovic, Vojislav R.; Markovic, Nenad M.

In the present study, we used a surface-science approach to establish a functional link between activity and stability of monometallic oxides during the OER in acidic media. We found that the most active oxides (Au<<>Pt>Ir>Ru>>Os) materials. We suggest that the relationships between stability and activity are controlled by both the nobility of oxides as well as by the density of surface defects. This functionality is governed by the nature of metal cations and the potential transformation of stable metal cation with a valance state of n= +4 to unstable metal cation with n > +4. A practical consequence of such a close relationship between activity and stability is that the best materials for the OER should balance stability and activity in such a way that the dissolution rate is neither too fast nor too slow.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE Office of Science - Office of Basic Energy Sciences - Materials Sciences and Engineering Division
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 1355455
• Journal Information: Journal of Physical Chemistry Letters, Vol. 5, Issue 14; ISSN 1948-7185
• Publisher: American Chemical Society
• Country of Publication: United States
• Language: English