Hollow manganese-doped cobalt nickel oxide coated nitrogen-doped carbon nanocomposites and preparation method thereof

A nanocomposite material, nitrogen-doped carbon technology, applied in the direction of nanotechnology, nanotechnology, nanotechnology, etc. for materials and surface science, can solve the problems of low durability, high cost, unfavorable large-scale commercial application, etc., Achieve the effect of uniform structure and morphology, avoid agglomeration, simple and efficient modification method

Inactive Publication Date: 2019-01-08
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although for example IrO 2 or RuO 2 Such noble metal oxides have very high catalytic activity for OER, but their scarcity, high cost and low durability are not conducive to their large-scale commercial application.

Method used

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  • Hollow manganese-doped cobalt nickel oxide coated nitrogen-doped carbon nanocomposites and preparation method thereof
  • Hollow manganese-doped cobalt nickel oxide coated nitrogen-doped carbon nanocomposites and preparation method thereof
  • Hollow manganese-doped cobalt nickel oxide coated nitrogen-doped carbon nanocomposites and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A nitrogen-doped carbon nano-composite material coated with hollow manganese-doped cobalt-nickel oxide, comprising a hollow nitrogen-doped carbon material, the hollow nitrogen-doped carbon material being coated with manganese-doped cobalt-nickel oxide. The hollow nitrogen-doped carbon material has a hollow polyhedral structure.

[0048] Such as figure 1 As shown, the preparation method of the nitrogen-doped carbon nanocomposite coated with hollow manganese-doped cobalt-nickel oxide is as follows:

[0049] Step 1: Synthesis of hollow nitrogen-doped carbon:

[0050] A) A layer of polyaniline is coated on the surface of ZIF-67 by solution polymerization to obtain ZIF-67@polyaniline composite material: ultrasonically disperse ZIF-67 powder in 100mL of water, and ultrasonically treat it for 20min to obtain a dispersion, ZIF The concentration of -67 was 1 mg / mL. Then 20 μL of aniline (Sigma-Aldrich) monomer was added into the above dispersion liquid to make it uniformly di...

Embodiment 2

[0061] Similar to the nitrogen-doped carbon nanocomposite material coated with hollow manganese-doped cobalt-nickel oxide in Example 1, the difference is that the amount of manganese nitrate added in Example 1 is reduced to 6×10 -5 mol, the obtained product is labeled as hollow manganese-doped cobalt-nickel oxide-coated nitrogen-doped carbon nanocomposite-1.

Embodiment 3

[0063] Similar to the nitrogen-doped carbon nanocomposite material coated with hollow manganese-doped cobalt-nickel oxide in Example 1, the difference is that the amount of manganese nitrate added in Example 1 is increased to 1×10 -4 mol, the obtained product is labeled as hollow manganese-doped cobalt-nickel oxide-coated nitrogen-doped carbon nanocomposite-2.

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Abstract

The invention provides a hollow manganese doped cobalt nickel oxide coated nitrogen doped carbon nano composite material and preparation thereof. The hollow manganese-doped cobalt nickel oxide coatednitrogen-doped carbon nanocomposite material is characterized in that the hollow manganese-doped cobalt nickel oxide coated carbon nanocomposite material comprises a hollow nitrogen-doped carbon material, and the hollow nitrogen-doped carbon material is coated with the manganese-doped cobalt nickel oxide. The composite material prepared by the invention has the characteristic of homogeneous structure and morphology, the polyaniline-derived hollow nitrogen-doped porous carbon material supports the hollow polyhedral structure of the composite material, Mn-doped cobalt-nickel oxide is uniformly grown on the outside of hollow nitrogen-doped carbon materials, avoiding the problem of manganese-doped cobalt-nickel oxide agglomeration, which has the advantages of large specific surface area, goodconductivity, stable physical and chemical properties, excellent electrochemical performance and so on.

Description

technical field [0001] The invention belongs to the technical field of metal oxide-carbon materials, and specifically relates to a nitrogen-doped carbon nanocomposite material coated with hollow manganese-doped cobalt-nickel oxide and a preparation method thereof. Background technique [0002] For the implementation of water splitting to produce clean hydrogen (H 2 ) fuel, and for propulsion of renewable H 2 -O 2 For fuel cell or metal-air battery technology, it is crucial to develop efficient and stable electrocatalysts for oxygen evolution reaction (OER). Although for example IrO 2 or RuO 2 Noble metal oxides such as OER have very high catalytic activity for OER, but their scarcity, high cost, and low durability are not conducive to their large-scale commercial application. [0003] To circumvent the high cost and scarcity of noble metal-based catalysts, non-noble metal catalysts such as transition metal oxides and heteroatom-doped carbon materials have been intensive...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/90B82Y30/00
CPCB82Y30/00H01M4/9016H01M4/9083Y02E60/50
Inventor 刘天西赖飞立朱晓波缪月娥冯鉴睿
Owner DONGHUA UNIV
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