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

被引：646

作者：

Danilovic, Nemanja ^{[1
]}

Subbaraman, Ramachandran ^{[1
]}

Chang, Kee-Chul ^{[1
]}

Chang, Seo Hyoung ^{[1
]}

Kang, Yijin J. ^{[1
]}

Snyder, Joshua ^{[1
]}

Paulikas, Arvydas P. ^{[1
]}

Strmcnik, Dusan ^{[1
]}

Kim, Yong-Tae ^{[2
]}

Myers, Deborah ^{[3
]}

Stamenkovic, Vojislav R. ^{[1
]}

Markovic, Nenad M. ^{[1
]}

机构：

[1] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA

[2] Pusan Natl Univ, Pusan 609735, South Korea

[3] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY LETTERS | 2014年 / 5卷 / 14期

关键词：

X-RAY-ABSORPTION; ELECTRODE MATERIAL; RUTHENIUM DIOXIDE; WATER; ELECTROCATALYSIS; VALENCY; IRIDIUM;

D O I：

10.1021/jz501061n

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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) are, in fact, the least stable (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 a stable metal cation with a valence 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.

引用

页码：2474 / 2478

页数：5

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