Hollow spherical carbon nitride coated copper-based fuel cell catalyst and preparation method

Abstract

The invention relates to the field of preparation of fuel cell catalysts and discloses a hollow spherical carbon nitride coated copper-based fuel cell catalyst and a preparation method. The preparation method comprises the following preparation process: (1) adding copper powder into melamine and carbon tetrachloride; carrying out solvent thermal reaction to prepare spherical graphite-phase carbonnitride coated copper colloid; (2) adding a pore-forming agent and a binding agent into the prepared colloid; after coating an electrode, carrying out heat treatment and annealing to prepare the hollow spherical carbon nitride coated copper-based fuel cell catalyst, wherein the hollow spherical carbon nitride coated copper-based fuel cell catalyst is prepared from the components in parts by weight: 93 to 96 parts of the colloid, 3 to 5 parts of the pore-forming agent and 1 to 2 parts of the binding agent. Compared with a common carbon nitride type catalyst, the fuel cell catalyst provided by the invention has the advantages that copper / copper oxide particles are compounded with carbon nitride, the catalytic activity is good, the mechanical property and processing property are good and theperformance is stable; a porous structure is formed and the specific surface area is large; the hollow spherical carbon nitride coated copper-based fuel cell catalyst has an extremely good applicationprospect in proton exchange membrane fuel cells.

Description

technical field [0001] The invention relates to the field of fuel cell catalyst preparation, and discloses a hollow spherical carbon nitride-wrapped copper-based fuel cell catalyst and a preparation method thereof. Background technique [0002] The proton exchange membrane fuel cell is a power generation device that directly converts the chemical energy stored in the fuel and oxidant into electrical energy with the proton exchange membrane as the electrolyte and hydrogen and oxygen (or air) as the fuel. Compared with other fuel cells, it has It has many advantages such as high efficiency, fast start-up, low working temperature, and no pollution. It has broad prospects for application in electric vehicles and portable power generation devices. It has attracted the attention of more and more countries and enterprises, and it has developed rapidly in recent years. . [0003] Catalyst is one of the key materials in fuel cells, and the cost of catalysts accounts for 1 / 3 of the c...

AI Technical Summary

Problems solved by technology

[0008] At present, platinum-based photocatalysts that are widely used have problems such as lack of resources, high price, and poor anti-toxicity, while traditional platinum-based noble metals have problems such as large dependence on catalysts, small specific surface area, and poor mechanical and processability. The poor stability of the graphite-phase carbon nitride hollow structure limits its development and application. The present invention proposes a hollow spherical carbon nitride-wrapped copper-based fuel cell catalyst and its preparation method, which can effectively solve the above technical problems