Iron, cobalt and nitrogen codoped carbon catalyst and preparation method and application thereof

A carbon catalyst and co-doping technology, applied in structural parts, electrical components, battery electrodes, etc., can solve the problems of single active site of TM-N-C catalyst, decreased catalytic activity of oxygen reduction, and uneven dispersion of active sites, etc. Achieve the effects of excellent oxygen reduction catalytic activity, good metal nanoparticle dispersion, and excellent mass transfer performance
CN107086313AActive Publication Date: 2017-08-22BEIJING UNIV OF CHEM TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
BEIJING UNIV OF CHEM TECH
Publication Date
2017-08-22

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Abstract

The invention relates to an iron, cobalt and nitrogen codoped carbon catalyst and a preparation method and application thereof. An iron / cobalt double-metal zeolite imidazate framework material is adopted as a precursor, and the iron, cobalt and nitrogen codoped carbon catalyst is prepared and obtained through high-temperature pyrolysis, wherein the iron / cobalt double-metal zeolite imidazate framework material is prepared by adopting ferrous sulfate, cobalt nitrate and 2-methylimidazole to carry out a self-assembly reaction in a solvent under an oxygen-free environment. The iron, cobalt and nitrogen codoped carbon catalyst prepared in the invention has the advantages that the oxygen reduction catalytic activity, electrochemical stability and methanol poisoning resistance is superior to those of commercial Pt / C, the cost is low, the preparation method is simple and volume production can be realized. The catalyst disclosed by the invention can be widely applied to the fields of fuel batteries, metal-air batteries and the like.
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Description

technical field

[0001] The invention relates to an iron, cobalt and nitrogen co-doped carbon catalyst, its preparation method and its application in fuel cells and metal-air cells. Background technique

[0002] The cathode reaction of fuel cells and metal-air batteries is an oxygen reduction reaction, which has a high energy barrier and a slow kinetic process. High-efficiency catalysts are required to reduce the reaction energy barrier to speed up the reaction rate. At present, the commercialized catalyst for oxygen reduction reaction is carbon-supported noble metal platinum catalyst (Pt / C), which has efficient oxygen reduction catalytic performance. However, the high cost, scarce reserves and poor resistance to methanol poisoning of noble metal Pt severely limit its large-scale application. Therefore, it is of great significance to research and develop non-noble metal oxygen reduction catalysts with low cost, high activity and high stability.

[0003] At present, transiti...

Claims

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