Issue 5, 2015

Toward the rational design of non-precious transition metal oxides for oxygen electrocatalysis

Abstract

In this Review, we discuss the state-of-the-art understanding of non-precious transition metal oxides that catalyze the oxygen reduction and evolution reactions. Understanding and mastering the kinetics of oxygen electrocatalysis is instrumental to making use of photosynthesis, advancing solar fuels, fuel cells, electrolyzers, and metal–air batteries. We first present key insights, assumptions and limitations of well-known activity descriptors and reaction mechanisms in the past four decades. The turnover frequency of crystalline oxides as promising catalysts is also put into perspective with amorphous oxides and photosystem II. Particular attention is paid to electronic structure parameters that can potentially govern the adsorbate binding strength and thus provide simple rationales and design principles to predict new catalyst chemistries with enhanced activity. We share new perspective synthesizing mechanism and electronic descriptors developed from both molecular orbital and solid state band structure principles. We conclude with an outlook on the opportunities in future research within this rapidly developing field.

Graphical abstract: Toward the rational design of non-precious transition metal oxides for oxygen electrocatalysis

Article information

Article type
Review Article
Submitted
08 dec 2014
Accepted
11 mar 2015
First published
11 mar 2015

Energy Environ. Sci., 2015,8, 1404-1427

Author version available

Toward the rational design of non-precious transition metal oxides for oxygen electrocatalysis

W. T. Hong, M. Risch, K. A. Stoerzinger, A. Grimaud, J. Suntivich and Y. Shao-Horn, Energy Environ. Sci., 2015, 8, 1404 DOI: 10.1039/C4EE03869J

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