Amorphous high-conductivity quaternary metal nitride and preparation method thereof

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...

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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 improve the interface affinity and compatibility between metal oxides and metals or to find oxides with better compatibility with metals. At present, cadmium oxide is considered to have good compatibility with metal substrates, so it is often used in the preparation of electrical contact materials, but the widespread use of cadmium oxide will cause serious environmental pollution, so it is still necessary to find related alternatives , to replace its application in electrical contact metal composites