摘要
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.
基金
National Key Research and Development Program of China(No.2021YFE0191700)
National Natural Science Foundation of China(Nos.22073033,21873032,21673087,21903032)
Natural Science Foundation of Anhui Province,China(No.2108085QB70)
Fundamental Research Funds for the Central Universities,China(Nos.WK2060000004,WK2060000021,WK2060000025,KY2060000180,2019kfyRCPY116)
Collaborative Innovation Program of Hefei Science Center of CAS(No.2021HSC-CIP002)
Natural Science Foundation of Hefei City,China(No.2021044)
Startup Fund from Huazhong University of Science and Technology,China(Nos.2006013118,3004013105)
Innovation and Talent Recruitment Base of New Energy Chemistry and Device,China(No.B21003).
