Preparation method and products of non-noble metal catalyst

Abstract

The invention discloses a preparation method and products of a non-noble metal catalyst. The preparation method of the non-noble metal catalyst comprises the steps of dissolving two metal salts and an organic ligand proportionally in an organic solvent respectively, mixing well, standing a solution at room temperature, and centrifuging or filtering and fully drying to obtain a precursor; subjecting the precursor to high-temperature pyrolysis in an inert atmosphere to obtain the non-noble metal catalyst; the prepared non-noble metal catalyst is a nano-structure carbon material with cobalt and another metal element co-doped, with MOF structure as a core and with carbon nanotubes grown on the surface; the non-noble metal catalyst prepared herein has high redox catalytic activity and stability and excellent CH3OH / CO tolerance in acidic electrolyte, the cost for the materials used herein is low, the preparation method is simple and convenient and is easy to perform.

Description

technical field [0001] The invention belongs to the field of nanomaterial preparation technology and electrochemistry, and more specifically relates to a preparation method of a non-precious metal catalyst and its product. Background technique [0002] Proton exchange membrane fuel cells, methanol fuel cells, electrolyzed water devices and integrated renewable fuel cells are power generation devices that directly convert chemical energy in fuels into electrical energy through electrochemical reactions without combustion. Energy technology; compared with previous storage batteries and rechargeable batteries, it has the characteristics of high energy, high power, no pollution, high efficiency and miniaturization, and its future popularity and market prospects are widely expected. However, catalysts, especially cathode non-noble metal catalysts, such as platinum-based catalysts, are the mainstream catalysts for fuel cell electrodes, and they have become one of the main bottlene...

AI Technical Summary

Problems solved by technology

[0003] In recent years, the research on carbon-based non-noble metal catalysts has made great progress, mainly N elements and M (Fe, Co, Ni, Pd, W and other metal elements)-N doped nano-carbons of various structures, such as graphene, Carbon nanotubes, carbon fibers, carbon spheres, mesoporous carbon and their composite carbon materials; the catalytic activity of such carbon-based non-precious metal catalysts in acidic electrolytes is much lower than that of noble metal catalysts, and the catalytic activity and stability need to be further improved

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