A stable PdCu@Pd core-shell nanobranches with enhanced activity and methanol-tolerant for oxygen reduction reaction. (10th September 2020)

• Record Type: Journal Article
• Authors: Huang, Shaoda; Lu, Shuanglong; Hu, Hongyin; Cao, Binbin; Li, Huining; Duan, Fang; Zhu, Han; Gu, Hongwei; Du, Mingliang
• Is Part Of: Electrochimica acta. Volume 354(2020)
• Publication Date: 2020-09-10
• Subjects: Electrocatalysis -- Core-shell PdCu@Pd -- Oxygen reduction reaction -- Nanobranches -- Methanol-tolerance; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2020.136680
• Languages: English
• ISSNs: 0013-4686

Abstract

Abstract: Palladium-based catalyst represents one of the most promising candidates among all non-platinum oxygen reduction reaction (ORR) catalysts. However, it is still challenging to precisely engineering their morphology and composition. Herein, highly branched core-shell PdCu@Pd nanocrystals have been fabricated via a simple one-pot synthesis that co-directed by hydrogen gas and halide ions. Such unique PdCu@Pd nanocrystals exhibit prominent ORR activity, durability and methanol-tolerance in alkaline media owing to their core-shell composition, highly-branched structure and defect-rich surface. This work elucidates a facile strategy to design highly branched core-shell nanomaterials, shedding light on the exploration and optimization of novel non-platinum ORR catalysts. Graphical abstract: A facile method for one-pot synthesis of Defect-rich PdCu@Pd Core-shell Nanobranches is developed. The as-made catalyst shows superior activity, durability and methanol-tolerance towards oxygen reduction reaction. Image 1