Amorphous high-conductivity quaternary metal nitride and preparation method thereof

An amorphous, high-conductivity technology, applied in the direction of nitrogen compounds, non-metallic elements, chemical instruments and methods, etc., can solve the problems of metal substrate conductivity and processing performance degradation, mechanical performance degradation, and insufficient affinity, etc., to achieve The effect of improving electrocatalytic performance, improving electrical conductivity, and good interface affinity

Active Publication Date: 2020-10-23
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the addition of metal oxides also has excessive deterioration of the conductivity and processing performance of the metal substrate due to insufficient affinity of the metal/metal oxide interface, and mechanical properties due to the incompatibility of the metal and metal oxide interface. the deterioration of
Therefore, in order to further promote the application of metal oxide/metal system conductive composite materials in the field of electrical contacts, it is often necessary to impro

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0026] Example 1:

[0027] The preparation method of amorphous high-conductivity quaternary metal nitride includes the following steps:

[0028] (1) Add cobalt acetate, copper nitrate, cerium nitrate and sodium molybdate at a molar ratio of 1:1:0.2:0.8 into deionized water and stir for 10 minutes to obtain a mixed solution one, cobalt acetate, copper nitrate, cerium nitrate and sodium molybdate The ratio of total mass to deionized water mass is 30%.

[0029] (2) After uniformly mixing citric acid, melamine, cysteine, and carrageenan in a mass ratio of 2:3:20:0.02, add them to the mixed solution obtained in step (1), citric acid, melamine, and cysteine The ratio of the total mass of carrageenan to the mass of mixture one is 5%, and the mixture is stirred for 1 hour to obtain mixture two.

[0030] (3) Put the mixed solution obtained in step (2) into the hydrothermal kettle, seal, heat up to 110°C, perform hydrothermal treatment for 2 hours, then heat up to 190°C, continue hydrothermal ...

Example Embodiment

[0035] Example 2:

[0036] The preparation method of amorphous high-conductivity quaternary metal nitride includes the following steps:

[0037] (1) Add cobalt acetate, copper nitrate, cerium nitrate and sodium molybdate at a molar ratio of 1:1:0.3:1.0 into deionized water and stir for 20 minutes to obtain mixed solution one, cobalt acetate, copper nitrate, cerium nitrate and sodium molybdate The ratio of total mass to deionized water mass is 30%.

[0038] (2) After uniformly mixing citric acid, melamine, cysteine, and carrageenan in a mass ratio of 3:4:30:0.03, add them to the mixed solution obtained in step (1), citric acid, melamine, and cysteine The ratio of the total mass of carrageenan to the mass of mixture one is 5%, and the mixture is stirred for 2 hours to obtain mixture two.

[0039] (3) Add the mixed solution obtained in step (2) into the hydrothermal kettle, seal, heat up to 115°C, perform hydrothermal treatment for 3 hours, then heat up to 200°C, continue hydrothermal t...

Example Embodiment

[0044] Example 3:

[0045] The preparation method of amorphous high-conductivity quaternary metal nitride includes the following steps:

[0046] (1) Add cobalt acetate, copper nitrate, cerium nitrate and sodium molybdate at a molar ratio of 1:1:0.4:1.2 into deionized water and stir for 30 minutes to obtain mixed solution one, cobalt acetate, copper nitrate, cerium nitrate and sodium molybdate The ratio of total mass to deionized water mass is 30%.

[0047] (2) After uniformly mixing citric acid, melamine, cysteine, and carrageenan in a mass ratio of 4:5:40:0.04, add them to the mixed solution obtained in step (1), citric acid, melamine, and cysteine The ratio of the total mass of carrageenan to the mass of mixture one is 5%, and the mixture is stirred for 3 hours to obtain mixture two.

[0048] (3) Put the second mixture obtained in step (2) into the hydrothermal kettle, seal, heat up to 120°C, perform hydrothermal treatment for 4 hours, then heat up to 210°C, continue hydrothermal t...

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Abstract

The invention relates to the field of new materials, and aims to provide an amorphous high-conductivity quaternary metal nitride and a preparation method thereof. The product comprises four metal elements of Co, Cu, Ce and Mo, wherein the molar ratio of Co to Cu to Ce to Mo is 1: 1: (0.2-0.4): (0.8-1.2); the product is powdery, and the microstructure of the product is an amorphous sheet-shaped structure or an olive-shaped structure. The method has the advantages that by strictly controlling the preparation process of parameters, non-crystallization and microstructure controllability can be achieved according to the requirements of application in different fields; and the prepared amorphous high-conductivity quaternary metal nitride has high conductivity, high electrocatalytic oxygen evolution capacity and good interface affinity with metal silver. More high-valence active sites can be formed on the surface of the catalyst, so that the electro-catalytic performance is improved. Good interface bonding with a metal substrate is facilitated, the conductivity of the metal composite material is improved due to the high conductivity characteristic of the metal composite material, and excessive reduction of the conductivity due to addition of a reinforcing phase is avoided.

Description

technical field [0001] The invention relates to the field of new materials, in particular to an amorphous high-conductivity quaternary metal nitride and a preparation method thereof. Background technique [0002] In the past few decades, the shadow of energy crisis has been hanging over the world. At the same time, with the increasingly severe environmental pollution problems, it is an inevitable trend of development to gradually shift from fossil fuels to the use of sustainable and non-polluting clean energy. Hydrogen is an environmentally friendly renewable energy that can effectively replace fossil energy and has a high calorific value. At present, obtaining hydrogen through electrolysis of water is considered to be a very effective means. However, the kinetics of electrolyzed water is relatively slow, and the reaction overpotential is large. In particular, the oxygen evolution half-reaction of anodic water oxidation, due to the transfer process involving four electron...

Claims

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Application Information

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IPC IPC(8): C01G51/00C01B21/00B01J27/24B01J35/02
CPCB01J27/24B01J35/023C01B21/0602
Inventor 张玲洁蔡伟伟暴宁钟
Owner ZHEJIANG UNIV
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