Preparation and oxygen reduction properties of carbon-supported zinc doped ZIF-67

Abstract Biochar has excellent adsorption properties due to its unique graphite-like structure. Relevant studies have shown that biochar material can be used as a low-cost catalyst to show high oxygen reduction catalytic activity at the cathode of the battery. In this paper, zinc-doped zif-67 was guided to grow on the surface of carbon materials by solvothermal synthesis, and a new catalyst was prepared. The experimental results show that the half-wave potential of oxygen reduction is about −0.227V compared with saturated calomel electrodes, and the catalytic activity of oxygen reduction is greatly improved.