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Title: Enhanced oxygen evolution activity of IrO2 and RuO2 (100) surfaces

Abstract

The activities of the oxygen evolution reaction (OER) on IrO2 and RuO2 catalysts are among the highest known to date. However, the intrinsic OER activities of surfaces with defined crystallographic orientations are not well established experimentally. Here we report that the (100) surface of IrO2 and RuO2 is more active than the (110) surface that has been traditionally explored by density functional theory studies. The relation between the OER activity and density of coordinatively undersaturated metal sites exposed on each rutile crystallographic facet is discussed. The surface-orientation dependent activities can guide the design of high-surface-area catalysts with increased activity for electrolyzers, metal-air batteries, and photoelectrochemical water splitting applications.

Authors:
 [1];  [2];  [2];  [2];  [1]
  1. Massachusetts Institute of Technology (MIT)
  2. ORNL
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1131514
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Journal Article
Journal Name:
Journal of Physical Chemistry
Additional Journal Information:
Journal Volume: 5
Country of Publication:
United States
Language:
English
Subject:
Thin film; Electrochemisty; Oxide; Rutile

Citation Formats

Stoerzinger, Kelsey, Qiao, Liang, Biegalski, Michael D, Christen, Hans M, and Shao-Horn, Yang. Enhanced oxygen evolution activity of IrO2 and RuO2 (100) surfaces. United States: N. p., 2014. Web.
Stoerzinger, Kelsey, Qiao, Liang, Biegalski, Michael D, Christen, Hans M, & Shao-Horn, Yang. Enhanced oxygen evolution activity of IrO2 and RuO2 (100) surfaces. United States.
Stoerzinger, Kelsey, Qiao, Liang, Biegalski, Michael D, Christen, Hans M, and Shao-Horn, Yang. 2014. "Enhanced oxygen evolution activity of IrO2 and RuO2 (100) surfaces". United States.
@article{osti_1131514,
title = {Enhanced oxygen evolution activity of IrO2 and RuO2 (100) surfaces},
author = {Stoerzinger, Kelsey and Qiao, Liang and Biegalski, Michael D and Christen, Hans M and Shao-Horn, Yang},
abstractNote = {The activities of the oxygen evolution reaction (OER) on IrO2 and RuO2 catalysts are among the highest known to date. However, the intrinsic OER activities of surfaces with defined crystallographic orientations are not well established experimentally. Here we report that the (100) surface of IrO2 and RuO2 is more active than the (110) surface that has been traditionally explored by density functional theory studies. The relation between the OER activity and density of coordinatively undersaturated metal sites exposed on each rutile crystallographic facet is discussed. The surface-orientation dependent activities can guide the design of high-surface-area catalysts with increased activity for electrolyzers, metal-air batteries, and photoelectrochemical water splitting applications.},
doi = {},
url = {https://www.osti.gov/biblio/1131514}, journal = {Journal of Physical Chemistry},
number = ,
volume = 5,
place = {United States},
year = {Wed Jan 01 00:00:00 EST 2014},
month = {Wed Jan 01 00:00:00 EST 2014}
}