销纳米闭簇催化剂的制备及产氢性能研究

The electrocatalytic hydrogen production technology plays a pivotal role in promoting the development of clean energy. Based on the strong metal-support interactions, the Ft nanocluster material on porous nitrogen doped carbon materials was prepared by using the anchoring effect of iron single atom (Pt@Fe-N-C) , and the material underwent structural characterization and electrocatalytic testing. The results show that the Pt@ Fe-N-C material inherits the porous dodecahedron structure of ZIF-8, in which iron single atoms have an anchoring effect and thus disperse the platinum nanoclusters. Pt @ Fe-N-C exhibits excellent electrocatalytic HER (hydrogen evolution reaction) activity and stability in 0.5 mol/L sulfuric acid solution with an overpotential 7710 of 17 mV, and the increase of 97,0 is only 4 mV after degradation of the 3 000-cycling test. In addition, the mass-activity of Pt@ Fe-N-C 12.43 mA/( cm2 (µg) _ is 6. 1 times than that of commercial Pt/C 2.05 mA/( cm µg) at overpotential of 20 mV (vs. Ag/AgCl). As a result, the dispersion of platinum through the single-atom anchoring effect is an effective strategy to reduce the loading of precious metals, and this approach provides a new idea for the future development of low-precious-metal electrocatalytic materials.