Synthesis of Pt–Ni Alloy Nanocrystals with High‐Index Facets and Enhanced Electrocatalytic Properties

• DOI: 10.1002/ange.201406497
• Publication Date: 2014-09-02T16:30:40Z
• Authors: Xiling Xu; Xin Zhang; Hui Sun; Ying Yang; Xiaoping Dai; Jinsen Gao; Xueyong Li; Pengfang Zhang; Hong‐Hui Wang; Neng‐Fei Yu; Shi‐Gang Sun
• Keywords: Electrolytic reduction; Electrooxidation; 01 natural sciences; 7. Clean energy; Nanocrystals; 0104 chemical sciences; Oxygen; Nickel; Synthesis (chemical); Catalyst activity; Platinum alloys; Electrocatalysis; Alloying; Platinum

Abstract The shape‐controlled synthesis of multicomponent metal nanocrystals (NCs) bounded by high‐index facets (HIFs) is significant importance in the design and high‐activity catalysts. We report herein preparation Pt–Ni alloy NCs tuning their shape from concave‐nanocubic (CNC) to nanocubic hexoctahedral (HOH). Owing synergy HIFs electronic effect alloy, as‐prepared CNC HOH exhibited excellent catalytic properties for electrooxidation methanol formic acid, as well oxygen reduction reaction (ORR).