基于微流控技术平台的Pt基...剂高通量合成和筛选（英文）_胡洋.pdf

物 理 化 学 学 报 Acta Phys.-Chim.Sin.2023,39(3),2209004(1 of 10)Received:September 5,2022;Revised:October 3,2022;Accepted:October 4,2022;Published online:October 11,2022.*Corresponding authors.Emails:(J.L.);(C.Z.);(W.H.).The project was supported by the National Key Research and Development Program(2016YFB0700205),the Tianjin Natural Science Foundation for Distinguished Young Scholar(18JCJQJC46500),the“131”First Level Innovative Talents Training Project in Tianjin,the National Youth Talent Support Program,and the National Science Foundation for Excellent Young Scholar(51722403).国家重点研发计划(2016YFB0700205),天津市自然科学杰出青年基金(18JCJQJC46500),天津市“131”创新型人才培养工程,国家“万人计划”青年拔尖人才项目及国家自然科学基金(51722403)资助 Editorial office of Acta Physico-Chimica SinicaArticle doi:10.3866/PKU.WHXB202209004 High-Throughput Synthesis and Screening of Pt-based Ternary Electrocatalysts Using a Microfluidic-based Platform Yang Hu 1,Bin Liu 2,Luyao Xu 3,Ziqiang Dong 4,Yating Wu 1,Jie Liu 2,*,Cheng Zhong 2,5,6,*,Wenbin Hu 2,5,6,*1 State Key Laboratory of Metal Matrix Composites,School of Materials Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,China.2 Key Laboratory of Advanced Ceramics and Machining Technology(Ministry of Education),School of Materials Science and Engineering,Tianjin University,Tianjin 300072,China.3 Shenzhen Zhongwu Technology Co.,Ltd,Shenzhen 518052,Guangdong Province,China.4 Materials Genome Institute,Shanghai University,Shanghai 200444,China.5 Tianjin Key Laboratory of Composite and Functional Materials,School of Materials Science and Engineering,Tianjin University,Tianjin 300072,China.6 Joint School of National University of Singapore and Tianjin University,International Campus of Tianjin University,Fuzhou 350207,China.Abstract:Pt-based electrocatalysts have received extensive attention owing to their wide applications in various fields,including fuel cells,hydrogen production,degradation of organic pollutants,electrochemical sensors,and oxidation of small molecules.Therefore,the efficient synthesis and screening of high-performance Pt-based electrocatalysts is necessary for accelerating their further development and application in these fields.The conventional method for developing the advanced materials and optimizing their synthesis parameters is time-consuming,inefficient,and costly.Microfluidic high-throughput techniques have the great potential for optimizing the synthesis parameters of Pt-based electrocatalysts.However,microfluidic high-throughput synthesis without performance evaluation cannot maximize its advantages.Therefore,it is highly desirable to develop a platform that combines the high-throughput synthesis of materials and the evaluation of their properties in a high-throughput fashion to improve the overall screening efficiency of the novel materials.In this study,a versatile microfluidic high-throughput platform,combining the high-throughput synthesis and screening of materials,was constructed.The microfluidic chip generated 20-level concentration gradients of the three different precursors.Microreactor arrays with 100 microchannels were used for the material synthesis and electrochemical characterization.A wide range of concentration combinations of the three different precursor solutions was achieved using the microfluidic chip.Five groups of Pt-based ternary electrocatalysts(100 different components in total)were synthesized and electrochemically characterized using the designed platform.The obtained Pt-based electrocatalysts exhibited a loose particle morphology,and were composed of small nanoparticles.The efficient preparation of Pt-based electrocatalysts with controllable compositions was also achieved through the high-throughput synthesis platform.The catalytic performance of the Pt-based catalysts towards oxygen evolution reaction(OER)was characterized by chronoamperometry.The optimal composition of Pt-based ternary electrocatalysts for OER was directly determined using the designed platform.For NiPtCu,the samples with a relatively high atomic percentage(approximately 物理化学学报 Acta Phys.-Chim.Sin.2023,39(3),2209004(2 of 10)50%)of Pt(i.e.,Ni0.30Pt0.56Cu0.14,Ni0.17Pt0.52Cu0.31 and Ni0.12Pt0.48Cu0.40)exhibited higher electrocatalytic activity and stability,whereas the samples with a relatively high atomic percentage(50%)of Cu possessed lower activity and stability.For AuPtNi and AuPtCu,the samples wherein Au and Pt accounted for a large proportion of the sample(i.e.,Ni or Cu 50%),the RhPtNi and RhPtCu samples all showed the relatively poor electrocatalytic activity and stability.These results demonstrate the high efficiency and flexibility of the constructed microfluidic high-throughput platform,which significantly shortens the cycle for the development cycle of new materials and the optimization of their properties.Key Words:High-throughput method;Electrocatalyst;Microfluidic technique;Electrochemical evaluation;Oxygen evolution reaction 基于微流控技术平台的基于微流控技术平台的 Pt 基三元电催化剂高通量合成和筛选基三元电催化剂高通量合成和