| abstract |
The invention relates to the technical field of oxygen reduction catalysts, and discloses an S-doped Fe-N-C nanoporous carbon fiber oxygen reduction catalyst which comprises the following formula raw materials: fe-based metal organic framework, polyacrylonitrile, thiosemicarbazide and condensing agent. The S-doped Fe-N-C nano porous carbon fiber oxygen reduction catalyst takes an Fe-based metal organic framework as a template and a compound formed by polyacrylonitrile as a raw material, carbon fibers prepared by an electrostatic spinning technology are subjected to thermal cracking to form an S-doped nitrogen-rich nano carbon material as the oxygen reduction catalyst, the nano size of the S-doped nitrogen-rich nano carbon material has a large specific surface area and excellent conductivity, the production of more Fe-N and C-N active sites is promoted, the S doping influences the electron cloud density around the Fe center, the electron localization is reduced, the interaction between the active sites of the catalyst and an oxidizing substance is improved, and the catalyst has excellent oxygen reduction catalytic activity. |