Iron-Nickel Nanoparticles as Bifunctional Catalysts in Water Electrolysis

被引：21

作者：

Ahmed, Jahangeer ^{[1
]}

Ahamad, Tansir ^{[1
]}

AlShehri, Saad M. ^{[1
,2
]}

机构：

[1] King Saud Univ, Coll Sci, Dept Chem, Riyadh 11451, Saudi Arabia

[2] Alfaisal Univ, Coll Sci & Gen Studies, Dept Chem, Riyadh 11533, Saudi Arabia

来源：

CHEMELECTROCHEM | 2017年 / 4卷 / 05期

关键词：

Nanoparticles; electrocatalysis; hydrogen evolution reaction; oxygen evolution reaction; OXYGEN EVOLUTION REACTION; ELECTROCATALYTIC ACTIVITY; BIMETALLIC NANOPARTICLES; MAGNETIC-PROPERTIES; HYDROGEN; OXIDATION; COBALT; IRIDIUM; ALLOYS; CARBON;

D O I：

10.1002/celc.201600754

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Iron-nickel nanoparticles (Fe-Ni NPs) were successfully synthesized in various stoichiometries by using the inverse micelle method followed by combustion at 5008 degrees.C for 12 h in H-2. Ni-rich Fe-Ni NPs crystallize in a face-centered cubic (fcc) structure, whereas Fe-rich Fe-Ni NPs stabilize in body-centered cubic (bcc) structure. Fe-Ni NPs operate as bifunctional electrode materials at room temperature in alkaline medium and show enhanced electrocatalytic activity in the electrolysis of water to H-2 evolution and O-2 evolution reactions (HER and OER) at low onset potential versus Ag/AgCl as the reference electrode. A low Tafel slope was also detected for Fe2Ni NPs (ca. 470 mV/dec) in the water oxidation reaction. Bifunctional electrocatalysts are significant in renewable and clean energy processes like hydrogen- oxygen fuel cells, metal-oxygen batteries, and so forth.

引用

页码：1222 / 1226

页数：5

共 41 条

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