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

Wesley T. Hong, Marcel Risch, Kelsey A. Stoerzinger, Alexis Grimaud, Jin Suntivich, Yang Shao-Horn

Research output: Contribution to journalReview articlepeer-review

1620 Scopus citations

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.

Original languageEnglish (US)
Pages (from-to)1404-1427
Number of pages24
JournalEnergy and Environmental Science
Volume8
Issue number5
DOIs
StatePublished - May 1 2015
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2015 The Royal Society of Chemistry.

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