From a Molecular 2Fe-2Se Precursor to a Highly Efficient Iron Diselenide Electrocatalyst for Overall Water Splitting

被引：206

作者：

Panda, Chakadola ^{[1
]}

Menezes, Prashanth W. ^{[1
]}

Walter, Carsten ^{[1
]}

Yao, Shenglai ^{[1
]}

Miehlich, Matthias E. ^{[2
]}

Gutkin, Vitaly ^{[3
]}

Meyer, Karsten ^{[2
]}

Driess, Matthias ^{[1
]}

机构：

[1] Tech Univ Berlin, Dept Chem Metalorgan & Inorgan Mat, Str 17 Juni 135,Sekr C2, D-10623 Berlin, Germany

[2] Friedrich Alexander Univ Erlangen Nurnberg FAU, Dept Chem & Pharm, Inorgan Chem, Egerlandstr 1, D-91058 Erlangen, Germany

[3] Hebrew Univ Jerusalem, Harvey M Krueger Family Ctr Nanosci & Nanotechnol, Edmond J Safra Campus, IL-91904 Jerusalem, Israel

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2017年 / 56卷 / 35期

关键词：

bioinspired complexes; energy conversion; hydrogen evolution; mixed valence; oxygen evolution; MANGANESE OXIDE CATALYSTS; OXIDATION CATALYSTS; COBALT; SITES; CLUSTERS; FERREDOXIN; ANALOGS; FILMS;

D O I：

10.1002/anie.201706196

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A highly active FeSe2 electrocatalyst for durable overall water splitting was prepared from a molecular 2Fe-2Se precursor. The as-synthesized FeSe2 was electrophoretically deposited on nickel foam and applied to the oxygen and hydrogen evolution reactions (OER and HER, respectively) in alkaline media. When used as an oxygen-evolution electrode, a low 2,15 mV overpotential was achieved at a current density of 10 mA cm(-2), representing outstanding catalytic activity and stability because of Fe(OH)/FeOOH active sites formed at the surface of FeSe2. Remarkably, the system is also favorable for the HER. Moreover; an overall water-splitting setup was fabricated using a two-electrode cell, which displayed a low cell voltage and high stability. In summary, the first iron selenide material is reported that can be used as a bifunctional electrocatalyst for the OER and HER, as well as overall water splitting.

引用

页码：10506 / 10510

页数：5

共 62 条

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