Formation of unexpectedly active Ni-Fe oxygen evolution electrocatalysts by physically mixing Ni and Fe oxyhydroxides

被引：67

作者：

Goerlin, Mikaela ^{[1
,2
,3
]}

Chernev, Petko ^{[1
]}

Paciok, Paul ^{[4
]}

Tai, Cheuk-Wai ^{[5
]}

Ferreira de Araujo, Jorge ^{[2
]}

Reier, Tobias ^{[2
]}

Heggen, Marc ^{[4
]}

Dunin-Borkowski, Rafal ^{[4
]}

Strasser, Peter ^{[2
]}

Dau, Holger ^{[1
]}

机构：

[1] Free Univ Berlin, Dept Phys, D-14195 Berlin, Germany

[2] Tech Univ Berlin, Dept Chem, Electrochem Energy Catalysis & Mat Sci Lab, D-10623 Berlin, Germany

[3] Stockholm Univ, AlbaNova Univ Ctr, Dept Phys, SE-10691 Stockholm, Sweden

[4] Forschungszentrum Julich, Ernst Ruska Ctr Microscopy & Spect Electrons, Julich, Germany

[5] Stockholm Univ, Dept Mat & Environm Chem, SE-10691 Stockholm, Sweden

来源：

CHEMICAL COMMUNICATIONS | 2019年 / 55卷 / 06期

关键词：

WATER OXIDATION; IRON; CATALYSIS; (OXY)HYDROXIDE; EFFICIENCY; COBALT; OXIDES; SITES; FILMS;

D O I：

10.1039/c8cc06410e

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We present an unusual, yet facile, strategy towards formation of physically mixed Ni-Fe(OxHy) oxygen evolution electrocatalysts. We use in situ X-ray absorption and UV-vis spectroscopy, and high-resolution imaging to demonstrate that physical contact between two inferior Ni(OH)(2) and Fe(OOH) catalysts self-assemble into atomically intermixed Ni-Fe catalysts with unexpectedly high activity.

引用

页码：818 / 821

页数：4