PdBi Single‐Atom Alloy Aerogels for Efficient Ethanol Oxidation. (1st July 2021)

• Record Type: Journal Article
• Authors: Wang, Hengjia; Jiao, Lei; Zheng, Lirong; Fang, Qie; Qin, Ying; Luo, Xin; Wei, Xiaoqian; Hu, Liuyong; Gu, Wenling; Wen, Jing; Zhu, Chengzhou
• Is Part Of: Advanced functional materials. Volume 31:Number 38(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-07-01
• Subjects: aerogels -- electrocatalysis -- ethanol oxidation reaction -- self‐assembly -- single‐atom alloys; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adfm.202103465
• Languages: English
• ISSNs: 1616-301X

Abstract

Abstract: Single‐atom alloys (SAAs) have ignited a surge of unprecedented interest as the advanced nanomaterials and opened many opportunities for wide applications. Herein, 3D porous aerogels comprising ionic liquid (IL) functionalized PdBi SAA building blocks with atomically dispersed Bi on Pd nanowires (IL/Pd50 Bi1 ) are synthesized with accelerated gelation kinetics, which could serve as high‐efficiency electrocatalysts for ethanol oxidation reaction (EOR). Benefiting from the unique structures of aerogels including synergistic effects of PdBi SAA nanowire networks and interface engineering, the optimized IL/Pd50 Bi1 aerogels display a nearly fourfold enhancement in mass activity and boosted stability for EOR compared to commercial Pd/C. Density functional theory calculations further demonstrate that isolated Bi atoms on Pd nanowire networks decrease the energy barrier of the rate‐determining step, resulting in excellent electrocatalytic activity for EOR. This work provides a promising method for developing efficient SAA catalysts for fuel electrooxidation. Abstract : Benefiting from the unique structures of aerogels that are derived from PdBi single‐atom alloy building blocks with atomically dispersed Bi on Pd nanowire networks and interface engineering, the resultant ionic liquid functionalized PdBi single‐atom alloy aerogels show outstanding electrocatalytic performance for the ethanol oxidation reaction.