| abstract |
The invention discloses a preparation method and application of a rare earth metal and transition metal co-doped carbon-based material. An appropriate amount of porous carbon, transition metal precursor and rare earth metal precursor is weighed, deionized water and ethanol are added, and ultrasonic treatment is carried out for 30 minutes. Then, the mixed solution A was obtained; then the mixed solution A was added to the organic ligand solution, stirred at room temperature for 3-5 h; centrifuged, washed, and dried; the obtained powder was put into a tube furnace for heat treatment, and the obtained black powder Pickling treatment is carried out, followed by suction filtration, washing with water until the filtrate is neutral, and drying to obtain a transition metal and rare earth metal co-doped carbon-based material. The carbon-based material prepared by the invention has abundant pore structure and excellent carbon monoxide selectivity, its Faradaic efficiency can reach up to 99%, the current density can reach up to 97 mA/cm 2 , and the electrochemical performance is excellent. |