Nitrogen-doped carbon nano composite material coated by hollow copper doped monocrystalline silicon and preparation method

Abstract

The invention provides a nitrogen-doped carbon nano composite material coated by hollow copper doped monocrystalline silicon and a preparation method. The nitrogen-doped carbon nano composite materialcoated by hollow copper doped monocrystalline silicon is characterized by comprising a hollow nitrogen-doped carbon material, the hollow nitrogen-doped carbon material is externally coated with copper doped cobaltous nickel oxide. The prepared composite material has the characteristic of uniform structure and morphology, the ZIF-67 and polyaniline derived hollow nitrogen-doped porous carbon material supports the hollow polyhedral structure of the composite material, a doped copper element changes charge distribution of the eigenstate of cobaltous nickel oxide, and its catalytic performance isimproved; the copper doped cobaltous nickel oxide uniformly grow outside the hollow nitrogen-doped carbon material, and the problem is avoided that metallic oxide is easy to agglomerate. The nitrogen-doped carbon nano composite material has the advantages of being large in specific surface area, good in electrical conductivity, stable in physicochemical property, superior in electrochemical performance and the like.

Description

technical field

[0001] The invention belongs to the technical field of heteroatom-doped double metal oxide-carbon materials, in particular to a nitrogen-doped carbon nanocomposite material coated with hollow copper-doped cobalt-nickel oxide and a preparation method thereof. Background technique

[0002] Electrocatalytic hydrolysis has attracted great research interest as a sustainable hydrogen production method. Among the two half-cell reactions for water electrolysis, the anodic oxygen evolution reaction (OER) involves an energetically demanding four-electron transfer process that significantly reduces the efficiency of water splitting. Therefore, the development of efficient catalysts for OER remains one of the most important challenges in water splitting for hydrogen production. Noble metal oxides such as IrO x and RuO x So far, it is the most active catalyst for OER as an electrocatalyst, but its scarcity, high cost, and low durability are not conducive to its large-s...

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