Preparation method for transition metal oxide nanoparticle

Abstract

The invention relates to a preparation method for a transition metal oxide nanoparticle. The preparation steps include: adding one of a soluble cobalt salt, manganese salt, copper salt and nickel salt or a mixture of the two into water or ethanol, and dispersing the materials uniformly, then adding an amino group-containing small molecular alkali or alkaline solvent, placing the mixed solution into an oil bath pan to conduct heating reflux till generation of solid precipitate, when the precipitate no longer increases, performing cooling, and subjecting the solid precipitate to filtering, washing and drying so as to obtain the transition metal oxide nanoparticle. The method provided by the invention has the advantages of simplicity and practicability, and convenient mass production. At the same time, the transition metal nanoparticle prepared by the method has the characteristics of even particle size, and good catalytic activity and stability, and is suitable for use as an oxygen reduction reaction catalyst in fuel cells, metal air batteries and the like.

Description

technical field [0001] The invention relates to a method for preparing transition metal nanoparticles, in particular to an electrode material used in the field of electrochemical energy such as supercapacitors, secondary batteries and fuel cells (metal air fuel cells / alkaline anion exchange membrane fuels) battery) as an electrocatalyst. Background technique [0002] With the depletion of petroleum resources and the need to reduce greenhouse gas emissions, the development of new clean energy technologies has become a research hotspot, and relying on electrochemical energy technology to achieve energy storage and conversion has become the first choice for the next generation of clean energy technology. Supercapacitors, secondary batteries, and fuel cells are the three pillars of electrochemical energy. Electrode materials are the core components of these energy conversion technologies, and their activity and price become the key factors affecting the performance and cost of ...

AI Technical Summary

Problems solved by technology

The methods for preparing transition metal oxides in the literature include hydrothermal method, precipitation-calcination method, sol-gel method, etc., but these methods are more cumbersome, time-consuming, and energy-consuming, which is not conducive to large-scale production

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