文献类型：期刊文献

英文题名：Rapid Screening of Bimetallic Electrocatalysts Using Single Nanoparticle Collision Electrochemistry

作者：Li, Huimin[1,2];Zhang, Xuanxuan[1,2];Sun, Zehui[1,2];Ma, Wei[1,2]

机构：[1]East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Frontiers Sci Ctr Materiobiol & Dynam Chem, Sch Chem & Mol Engn,Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Frontiers Sci Ctr Materiobiol & Dynam Chem, Sch Chem & Mol Engn,Joint Int Res Lab Precis Chem, Shanghai 200237, Peoples R China

年份：2022

卷号：144

期号：36

起止页码：16480

外文期刊名：JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

收录：;EI(收录号：20223712715385);WOS:【SCI-EXPANDED(收录号:WOS:000855236200001)】；

基金：This research was supported by Major Research Project (92061108) , Shanghai Municipal Science and Technology Major Project (2018SHZDZX03) , Shanghai Municipal Natural Science Fund (19ZR1472100) , and Xiamen University Opening Project of PCOSS (201901) . W. M. is sponsored by National Ten Thousand Talent Program for young top-notch talent.

语种：英文

外文关键词：Binary alloys - Electrocatalysts - Electrolysis - Electrolytic reduction - Gold alloys - Nanoparticles - Platinum alloys - Silver alloys

摘要：The pace of nanomaterial discovery for highperformance electrocatalysts could be accelerated by the development of efficient screening methods. However, conventional electrochemical characterization via drop-casting is inherently inaccurate and time-consuming, as such ensemble measurements are serially performed through nanocatalyst synthesis, morphological characterization, and performance testing. Herein, we propose a rapid electrochemical screening method for bimetallic electrocatalysts that combines nanoparticle (NP) preparation and performance testing at the single NP level, thus avoiding any inhomogeneous averaging contribution. We employed single NP collision electrochemistry to realize in situ electrodeposition of a precisely tunable Pt shell onto individual parent NPs, followed by instantaneous electrocatalytic measurement of the newborn bimetallic core-shell NPs. We demonstrated the utility of this approach by screening bimetallic Au-Pt NPs and Ag-Pt NPs, thereby exhibiting promising electrocatalytic activity at optimal atomic ratios for methanol oxidation and oxygen reduction reactions, respectively. This work provides a new insight for the rapid screening of other bimetallic electrocatalysts.