Fuel cell catalyst taking metal glass as carrier and preparation method of fuel cell catalyst

A metal glass and fuel cell technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of reduced catalyst activity, poor durability, carrier corrosion, etc., and achieve improved activity and durability, high stability, and preparation low cost effect

Active Publication Date: 2018-05-22
浙理氢能(杭州)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the defects that existing metal particle catalysts use carbonaceous or carbonaceous materials as carriers, which are prone to carrier corrosion and aggregation, resulting in reduced catalyst activity and poor durability, the present invention proposes a fuel cell catalyst using metallic glass as a carrier and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A fuel cell catalyst with metallic glass as a carrier is prepared by the following method:

[0038] a. Preparation of metallic glass carrier: under the protection of inert gas, the metal is heated to 1850°C, melted and mixed, and then formed into a film in a molten state, and rapidly cooled at 80°C / s to obtain a metallic glass carrier; wherein, the The chemical composition of the metallic glass carrier is as follows: copper 10wt%, nickel 5wt%, aluminum 10wt%, titanium 5wt%, and the rest is zirconium.

[0039] b. Arc deposition: Put the platinum metal particles to be deposited with a particle size of 5-800nm ​​into the vacuum cathodic arc deposition equipment as the cathode, and place the metallic glass carrier on the sample stage of the vacuum cathodic arc deposition equipment. The metallic glass carrier and The distance between the metal particles is 10mm, the vacuum cathodic arc deposition equipment is evacuated, and the deposition starts when the vacuum degree is ≤0....

Embodiment 2

[0046] A fuel cell catalyst with metallic glass as a carrier is prepared by the following method:

[0047] a. Preparation of metallic glass carrier: under the protection of an inert gas, the metal is heated to 2000°C, melted and mixed, and then formed into a film in a molten state, and rapidly cooled at 50°C / s to obtain a metallic glass carrier; wherein, The chemical composition of the metallic glass carrier is as follows: copper 30wt%, nickel 10wt%, aluminum 5wt%, titanium 1wt%, and the rest is zirconium.

[0048] b. Arc deposition: Put the platinum metal particles to be deposited with a particle size of 5-800nm ​​into the vacuum cathodic arc deposition equipment as the cathode, and place the metallic glass carrier on the sample stage of the vacuum cathodic arc deposition equipment. The metallic glass carrier and The distance between the metal particles is 2mm, the vacuum cathodic arc deposition equipment is evacuated, and the deposition starts when the vacuum degree is ≤0.5×...

Embodiment 3

[0052] A fuel cell catalyst with metallic glass as a carrier is prepared by the following method:

[0053] a. Preparation of metallic glass carrier: under the protection of inert gas, the metal is heated to 1900°C, melted and mixed, and then formed into a film in a molten state, and rapidly cooled at 60°C / s to obtain a metallic glass carrier; wherein, The chemical composition of the metallic glass carrier is as follows: copper 18wt%, nickel 7wt%, aluminum 7wt%, titanium 3wt%, and the rest is zirconium.

[0054] b. Arc deposition: Put the platinum metal particles to be deposited with a particle size of 5-800nm ​​into the vacuum cathodic arc deposition equipment as the cathode, and place the metallic glass carrier on the sample stage of the vacuum cathodic arc deposition equipment. The metallic glass carrier and The distance of the metal particles is 8mm, the vacuum cathodic arc deposition equipment is evacuated, and the deposition starts when the vacuum degree is ≤0.5×10-2Pa. T...

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Abstract

The invention relates to a fuel cell catalyst taking metal glass as a carrier and a preparation method of the fuel cell catalyst, and belongs to the technical field of fuel cell catalysts. The invention provides the fuel cell catalyst taking the metal glass as the carrier. The catalyst comprises the metal glass carrier and metal particles, wherein the metal particles are loaded on the metal glasscarrier, the metal glass carrier is zirconium-based alloy metal glass, the metal particles are at least one of platinum, iron, cobalt, nickel, rhodium, palladium, iridium, gold and titanium, and the grain sizes of the metal particles are 5-800 nanometers. Compared with an existing catalyst carrier comprising carbon or carbon material, the fuel cell catalyst has the advantages that the metal glassis used as the carrier, no carbon is completely contained in the catalyst, corrosion and gathering of the carrier are difficult to occur, so that the activity and the durability of the catalyst are improved.

Description

technical field [0001] The invention relates to a fuel cell catalyst with metallic glass as a carrier and a preparation method thereof, belonging to the technical field of fuel cell catalysts. Background technique [0002] A fuel cell is a power generation device that directly converts the chemical energy of fuel and oxidant into electrical energy through an electrochemical reaction. It is mainly composed of positive electrode, negative electrode, electrolyte and auxiliary equipment. Due to the advantages of high efficiency, fast start-up, and low pollution, fuel cells are considered to be the fourth power generation technology that is expected to provide a large amount of electric energy after wind power, water power and solar power. The two major problems of "energy shortage" and "environmental pollution" have been solved, and the diversification of energy sources has been realized. Proton exchange membrane fuel cell (PEMFC) is a low-temperature fuel cell. In addition to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/90
CPCH01M4/9075Y02E60/50
Inventor 陈庆曾军堂
Owner 浙理氢能(杭州)科技有限公司
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