▎ 摘　　要

NOVELTY - Preparing bifunctional oxygen electrode catalyst of nitrogen and sulfur co-doped porous carbon coated carbon nanotubes involves dispersing the polysulfide precursor in a solvent, transferring the mixed solution to a reaction vessel, reacting at 50-300 degrees C for 0.5-48 hours, and performing post-processing to obtain the polysulfide precursor body material, dispersing the carbon nanotube (CNT) in a solvent, adding the nitrogen precursor and the polysulfide precursor obtained to obtain a mixed suspension A, dissolving the polymerization initiator in the solvent to obtain another solution B. The mixed solution A is placed in an environment of 0-10 degrees C, then added the solution B to the suspension A, reacted for 2-48 hours and perform post-treatment to obtain the N and S co-doped NSC-CNT metal-free catalyst precursor material NSC-CNT-Px, X represents the type of nitrogen-containing monomer. USE - Method for preparing bifunctional oxygen electrode catalyst of nitrogen and sulfur co-doped porous carbon coated carbon nanotubes. ADVANTAGE - The method is easy to amplify and produce, good for large-scale application, good for improving the ORR/OER catalytic activity of the material, has large porecanal and high specific surface area, in simple and eco-friendly manner. DETAILED DESCRIPTION - Preparing bifunctional oxygen electrode catalyst of nitrogen and sulfur co-doped porous carbon coated carbon nanotubes involves dispersing the polysulfide precursor in a solvent, transferring the mixed solution to a reaction vessel, reacting at 50-300 degrees C for 0.5-48 hours, and performing post-processing to obtain the polysulfide precursor body material, dispersing the carbon nanotube (CNT) in a solvent, adding the nitrogen precursor and the polysulfide precursor obtained to obtain a mixed suspension A, dissolving the polymerization initiator in the solvent to obtain another solution B. The mixed solution A is placed in an environment of 0-10 degrees C, then added the solution B to the suspension A, reacted for 2-48 hours and perform post-treatment to obtain the N and S co-doped NSC-CNT metal-free catalyst precursor material NSC-CNT-Px, X represents the type of nitrogen-containing monomer. The mass concentration of CNT in the mixed suspension A is 0.0001-1 g mL-1. The mass concentration of polysulfide precursor is 0.0001-1 g mL-1, and the mass concentration of initiator in solution B is 0.001-1 g mL-1. The NSC-CNT-Px material is placed in a reaction furnace and heated up to 600-1200 degrees C for heat treatment. The calcination time is 1-48 hours. The NSC-CNT catalyst is obtained and the heating rate is 1-20 degrees C/minute.