La0.8Sr0.2MnO3-δ Decorated with Ba0.5Sr0.5Co0.3Fe0.2O3-δ: A Bifunctional Surface for Oxygen Electrocatalysis with Enhanced Stability and Activity

被引：200

作者：

Risch, Marcel ^{[1
]}

Stoerzinger, Kelsey A. ^{[2
]}

Maruyama, Shingo ^{[3
]}

Hong, Wesley T. ^{[2
]}

Takeuchi, Ichiro ^{[3
]}

Shao-Horn, Yang ^{[1
,2
,4
]}

机构：

[1] MIT, Elect Res Lab, Cambridge, MA 02139 USA

[2] MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA

[3] Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USA

[4] MIT, Dept Mech Engn, Cambridge, MA 02139 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2014年 / 136卷 / 14期

基金：

美国国家科学基金会;

关键词：

ELECTROCHEMICAL WATER OXIDATION; PEROVSKITE OXIDE CATALYSTS; METAL-AIR BATTERIES; FUEL-CELLS; REDUCTION; EVOLUTION; ELECTROLYSIS; PRINCIPLES; NANOSCALE; PLANET;

D O I：

10.1021/ja5009954

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Developing highly active and stable catalysts based on earth-abundant elements for oxygen electrocatalysis is critical to enable efficient energy storage and conversion. In this work, we took advantage of the high intrinsic oxygen reduction reaction (ORR) activity of La0.8Sr0.2MnO3-delta (LSMO) and the high intrinsic oxygen evolution reaction (OER) activity of Ba0.5Sr0.5Co0.8Fe0.2O3-delta (BSCF) to develop a novel bifunctional catalyst. We used pulsed laser deposition to fabricate well-defined surfaces composed of BSCF on thin-film LSMO grown on (001)-oriented Nb-doped SrTiO3. These surfaces exhibit bifunctionality for oxygen electrocatalysis with enhanced activities and stability for both the ORR and OER that rival the state-of-the-art single- and multicomponent catalysts in the literature.

引用

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页码：5229 / 5232

页数：4

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