Chemical Research in Chinese Universities ›› 2022, Vol. 38 ›› Issue (5): 1219-1225.doi: 10.1007/s40242-022-2092-z

• Articles • Previous Articles     Next Articles

A Supported Palladium on Gallium-based Liquid Metal Catalyst for Enhanced Oxygen Reduction Reaction

MA Chunrong1,2, SONG Bingyi3, MA Zhentao4, WANG Xiaoqian1, TIAN Lin1, ZHANG Haoran1, CHEN Cai1, ZHENG Xusheng4, YANG Li-ming3, WU Yuen1,2   

  1. 1. First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230026, P. R. China;
    2. Dalian National Laboratory for Clean Energy, Dalian 116023, P. R. China;
    3. Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Materials Chemistry and Service Failure, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China;
    4. National Synchrotron Radiation Laboratory(NSRL), University of Science and Technology of China, Hefei 230029, P. R. China
  • Received:2022-03-14 Online:2022-10-01 Published:2022-10-08
  • Contact: WU Yuen, YANG Li-ming E-mail:yuenwu@ustc.edu.cn;Lmyang.uio@gmail.com,Lmyang@hust.edu.cn
  • Supported by:
    This work was supported by the National Key Research and Development Program of China(No.2021YFE0191700), the National Natural Science Foundation of China(Nos.22073033, 21873032, 21673087, 21903032), the Natural Science Foundation of Anhui Province, China(No.2108085QB70), the Fundamental Research Funds for the Central Universities, China(Nos. WK2060000004, WK2060000021, WK2060000025, KY2060000180, 2019kfyRCPY116), the Collaborative Innovation Program of Hefei Science Center of CAS(No.2021HSC-CIP002), the Natural Science Foundation of Hefei City, China(No.2021044), the Startup Fund from Huazhong University of Science and Technology, China(Nos.2006013118, 3004013105), and the Innovation and Talent Recruitment Base of New Energy Chemistry and Device, China (No.B21003).

Abstract: Developing high-performance catalysts for oxygen reduction reaction to replace costly platinum-based materials is of great importance but still confronted with challenges. Herein, a kind of supported palladium liquid metal catalyst, which is prepared by galvanic replacement, surpasses commercial Pt/C and Pd/C in oxygen reduction catalysis with a higher half-wave potential of 0.92 V, mass activity of 1.85 A/mgPd at 0.90 V, and superior durability. The liquid metal support can both optimize the electronic structures of Pd sites and guarantee the dispersion of Pd atoms, which explains the enhanced activity and durability, respectively. This work opens an avenue for rational design of catalysts.

Key words: Liquid metal, Supported catalyst, Oxygen reduction, Electrocatalysis