Au/Ni12P5 core/shell single-crystal nanoparticles as oxygen evolution reaction catalyst

• Published in: Nano research Vol. 10; no. 9; pp. 3103 - 3112
• Main Authors: Xu, Yingying, Duan, Sibin, Li, Haoyi, Yang, Ming, Wang, Shijie, Wang, Xun, Wang, Rongming
• Format: Journal Article
• Language: English
• Published: Beijing Tsinghua University Press 01.09.2017; Springer Nature B.V
• Subjects: Aqueous solutions; Atomic/Molecular Structure and Spectra; Biomedicine; Biotechnology; Chemistry and Materials Science; Condensed Matter Physics; core/shell;nanoparticles; Crystal structure; Gold; interfacial;coupling; Materials Science; Nanoparticles; Nanotechnology; Nickel; nickel;phosphide; Oxygen; Oxygen evolution reactions; oxygen;evolution;reaction; Phosphides; Research Article; Single crystals; oxygen evolution reaction; core/shell nanoparticles; interfacial coupling; nickel phosphide
• ISSN: 1998-0124; 1998-0000
• DOI: 10.1007/s12274-017-1527-1

We have demonstrated the improved performance of oxygen evolution reactions（OER） using Au/nickel phosphide （Ni12P5） core/shell nanoparticles （NPs） underbasic conditions. NPs with a Ni12Ps shell and a Au core, both of which havewell-defined crystal structures, have been prepared using solution-based syntheticroutes. Compared with pure NiuP5 NPs and Au-Ni12P5 oligomer-like NPs, thecore/shell crystalline structure with Au shows an improved OER activity. Itaffords a current density of 10 mA/cm2 at a small overpotential of 0.34 V, in 1 MKOH aqueous solution at room temperature. This enhanced OER activity mayrelate to the strong structural and effective electronic coupling between thesingle-crystal core and the shell.