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Preparation method of sponge nickel-based nanotube array heterostructure catalytic material

A nanotube array, heterostructure technology, applied in nanotechnology, nanotechnology, structural parts, etc., can solve the commercial application requirements of direct hydrazine fuel cells that cannot meet the high efficiency and economy, restrict the large-scale application of direct hydrazine fuel cells, The catalytic performance of hydrazine electrochemical oxidation is not ideal and other problems, to achieve excellent catalytic performance, improve the kinetic rate of the reaction, and reduce the activation energy.

Active Publication Date: 2020-11-13
NORTH CHINA UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Noble metals (Pt, Pd, Ag, and Au) have outstanding catalytic performance for the electrochemical oxidation of hydrazine. However, the high cost of noble metal anode catalytic materials restricts the large-scale application of direct hydrazine fuel cells.
[0005] At present, the catalytic performance of hydrazine electrochemical oxidation of non-noble metal catalyst materials for direct hydrazine fuel cell anodes that has been developed is not ideal, and the electronic conductivity needs to be improved, which cannot meet the requirements of efficient and economical direct hydrazine fuel cell commercial applications.

Method used

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  • Preparation method of sponge nickel-based nanotube array heterostructure catalytic material
  • Preparation method of sponge nickel-based nanotube array heterostructure catalytic material
  • Preparation method of sponge nickel-based nanotube array heterostructure catalytic material

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preparation example Construction

[0026] refer to figure 1 , the invention provides a method for preparing a sponge nickel-based nanotube array heterostructure catalytic material, comprising the following steps:

[0027] Step [1] The preparation of the sponge nickel-based zinc nanorod self-sacrificing template specifically includes the following operations:

[0028] a1. Selective adsorption of 2-chloro-5-chloromethylpyridine on the surface of sponge nickel: triethanolamine and tetrahydrofuran are mixed in a volume ratio of 2-4:6-8 to form an organic solvent, and 2-chloro-5- Chloromethylpyridine is dissolved in the organic solvent to form an adsorption solution (the concentration of 2-chloro-5-chloromethylpyridine in the adsorption solution is 142-185g / L); the sponge nickel is immersed in the adsorption solution, soaked at room temperature for 5- Take it out after 9 hours, wash it twice with acetone and then wash it three times with deionized water to complete the selective adsorption of 2-chloro-5-chloromethy...

Embodiment 1

[0039] Preferred embodiment 1 of the present invention provides a method for preparing a sponge nickel-based nanotube array heterostructure catalytic material, comprising the following steps:

[0040] Step [1] The preparation of the sponge nickel-based zinc nanorod self-sacrificing template specifically includes the following operations:

[0041] Selective adsorption of a1.2-chloro-5-chloromethylpyridine on the surface of sponge nickel: triethanolamine and tetrahydrofuran are mixed in a volume ratio of 3:7 to form an organic solvent, and 2-chloro-5-chloromethylpyridine Dissolve in the organic solvent to form an adsorption solution (the concentration of 2-chloro-5-chloromethylpyridine in the adsorption solution is 150g / L); immerse the sponge nickel in the adsorption solution, take it out after soaking at room temperature for 6 hours, and clean it with acetone After two times, wash three times with deionized water to complete the selective adsorption of 2-chloro-5-chloromethylpy...

Embodiment 2

[0051] This embodiment 2 provides a preparation method of a sponge nickel-based nanotube array heterostructure catalytic material, comprising the following steps:

[0052] Step [1] The preparation of the sponge nickel-based zinc nanorod self-sacrificing template specifically includes the following operations:

[0053] Selective adsorption of a1.2-chloro-5-chloromethylpyridine on the surface of sponge nickel: triethanolamine and tetrahydrofuran are mixed in a volume ratio of 2:8 to form an organic solvent, and 2-chloro-5-chloromethylpyridine Dissolve in the organic solvent to form an adsorption solution (2-chloro-5-chloromethylpyridine concentration in the adsorption solution is 155g / L); soak the sponge nickel in the adsorption solution, take it out after soaking at room temperature for 7 hours, and clean it with acetone After two times, wash three times with deionized water to complete the selective adsorption of 2-chloro-5-chloromethylpyridine on the surface of sponge nickel;...

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Abstract

The invention provides a preparation method of a sponge nickel-based nanotube array heterostructure catalytic material. The preparation method comprises the steps of [1] preparing a sponge nickel-based zinc nanorod self-sacrificial template; [2], synthesizing a NiSn-LDH layer with the nanotube array; and [3], constructing a NiSnPr-LDH / Pr2O3 heterostructure composite layer with the nanotube array.The catalytic material prepared by the method has excellent catalytic performance on electrochemical oxidation of hydrazine, and can meet the commercial application requirements of efficient and economic direct hydrazine fuel cells.

Description

technical field [0001] The invention relates to the field of fuel cell electrode materials, in particular to a method for preparing a sponge nickel-based nanotube array heterostructure catalytic material with high-efficiency and economical catalytic performance for electrochemical oxidation of hydrazine. Background technique [0002] A fuel cell is a power generation device that converts the chemical energy of fuel and oxidant into electrical energy through an electrochemical reaction. It is not limited by the thermal efficiency of the Carnot cycle and has high energy conversion efficiency. The direct hydrazine fuel cell using hydrazine as fuel has a theoretical output voltage of up to 1.56V and a theoretical energy density of up to 5.4KWh / L. Since hydrazine is a nitrogen hydride, it can achieve zero emissions, and the electrooxidation reaction of fuel hydrazine will not Produces substances that poison electrode catalytic materials. [0003] However, in the direct hydrazine...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/90B82Y40/00B82Y30/00
CPCB82Y30/00B82Y40/00H01M4/9016H01M4/9075Y02E60/50
Inventor 赵明胡广宇李建国
Owner NORTH CHINA UNIVERSITY OF TECHNOLOGY