High-entropy alloy nanoparticles as a promising electrocatalyst to enhance activity and durability for oxygen reduction

查看全文 作　　者：Yanan [1]Yu;Fanjie [2]Xia;Chengjie [1]Wang;Jinsong [2]Wu;Xianbiao [1]Fu;Dongsheng [1]Ma;Bencai [3]Lin;Jiaao [4]Wang;Qin [1]Yue;Yijin [1]Kang

机构地区：[1]Institute of Fundamental and Frontier Sciences,University of Electronic Science and Technology of China,Chengdu 610054,China;[2]State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Nanostructure Research Center,Wuhan University of Technology,Wuhan 430070,China;[3]Jiangsu Province Cultivation base for State Key Laboratory of Photovoltaic Science and Technology,Changzhou University,Changzhou 213164,China;[4]Department of Chemistry and the Oden Institute for Computational Engineering and Sciences,The University of Texas at Austin,TX 78712,USA

出　　处：《Nano Research》索引2022年第15卷第9期,共9页

基　　金：the National Natural Science Foundation of China(Nos.21972016 and 21773023);National Youth Top-notch Talent Support Program of China,Sichuan Science and Technology Program(No.2020YJ0243);Jiangsu Province Cultivation base for State Key Laboratory of Photovoltaic Science and Technology(No.SKLPST 202103);Foundation of State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering(No.2022-K28). 摘　　要：Developing efficient platinum-based electrocatalysts with super durability for the oxygen reduction reaction(ORR)is highly desirable to promote the large-scale commercialization of fuel cells.Although progress has been made in this aspect,the electrochemical kinetics and stability of platinum-based catalysts are still far from the requirements of the practical applications.Herein,PtPdFeCoNi high-entropy alloy(HEA)nanoparticles were demonstrated via a high-temperature injection method.PtPdFeCoNi HEA nanocatalyst exhibits outstanding catalytic activity and stability towards ORR due to the high entropy,lattice distortion,and sluggish diffusion effects of HEA,and the HEA nanoparticles delivered a mass activity of 1.23 A/mgPt and a specific activity of 1.80 mA/cmPt 2,which enhanced by 6.2 and 4.9 times,respectively,compared with the values of the commercial Pt/C catalyst.More importantly,the high durability of PtPdFeCoNi HEA/C was evidenced by only 6 mV negativeshifted half-wave potential after 50,000 cycles of accelerated durability test(ADT). 关键词：high-entropy alloy oxygen reduction reaction ELECTROCATALYST high durability

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High-entropy alloy nanoparticles as a promising electrocatalyst to enhance activity and durability for oxygen reduction

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