RT Journal Article A1 Yingying Xu,Sibin Duan,Haoyi Li,Ming Yang,Shijie Wang,Xun Wang,Rongming Wang; AD 磁光电复合材料与界面科学北京市重点实验室, 中国 ; 磁光电复合材料与界面科学北京市重点实验室, 中国 ; 化学系, 中国 ; 材料研究与工程研究所, 新加坡 ; 材料研究与工程研究所, 新加坡 ; 化学系, 中国 ; 磁光电复合材料与界面科学北京市重点实验室, 中国 T1 Au/Ni12P5 core/shell single-crystal nanoparticles as oxygen evolution reaction catalyst YR 2017 IS 9 vo 10 OP 3103-OP 3112 K1 oxygen evolution reaction;nickel phosphide;core/shell nanoparticles;interfacial coupling AB We have demonstrated the improved performance of oxygen evolution reactions (OER) using Au/nickel phosphide (Ni12P5) core/shell nanoparticles (NPs) under basic conditions. NPs with a Ni12P5 shell and a Au core, both of which have well-defined crystal structures, have been prepared using solution-based synthetic routes. Compared with pure Ni12P5 NPs and Au-Ni12P5 oligomer-like NPs, the core/shell crystalline structure with Au shows an improved OER activity. It affords a current density of 10 mA/cm2 at a small overpotential of 0.34 V, in 1 M KOH aqueous solution at room temperature. This enhanced OER activity may relate to the strong structural and effective electronic coupling between the single-crystal core and the shell. SN 1998-0124 LA EN