Journal
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
Volume 7, Issue 16, Pages 3240-3245Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpclett.6b01500
Keywords
-
Categories
Funding
- EU FP7 for Fuel Cell and Hydrogen Joint Technology Initiative [621237]
Ask authors/readers for more resources
Proton exchange membrane (PEM) electrolyzers are attracting an increasing attention as a promising technology for the renewable electricity storage. In this work, near ambient pressure X-ray photoelectron spectroscopy (NAP-XPS) is applied for in situ monitoring of the surface state of membrane electrode assemblies with RuO2 and bimetallic Ir0.7RuO0.3O2 anodes during water splitting. We demonstrate that Ir protects Ru from the formation of an unstable hydrous Ru(IV) oxide thereby rendering bimetallic Ru-Ir oxide electrodes with higher corrosion resistance. We further show that the water splitting occurs through a surface Ru(VIII) intermediate, and, contrary to common opinion, the presence of Ir does not hinder its formation.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available