Catalyst for water electrolysis and preparation and application thereof

A water electrolysis catalyst and catalyst technology, which can be used in physical/chemical process catalysts, electrolysis processes, electrolysis components, etc., can solve problems such as the decrease in the conductivity of catalysts, and achieve the effects of low electrolysis voltage, safe preparation process and good application effect.
CN101733095AInactive Publication Date: 2010-06-16DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Publication Date
2010-06-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to an anode catalyst used for a water electrolysis device of solid polymer electrolyte. The molecular formula of the catalyst is IrxRu1-xMyOz, wherein x is more than 0 and not more than 1, y is more than 0 and not more than 0.3, z is more than 1.5 and not more than 2.9, and M is one or more of such transition metals as Mo, W and Cr. In terms of the gross weight of the catalyst, the weight ratio of M in the catalyst is less than 10wt%. The required catalyst is characterized in that addition of the third component (or the fourth component) reduces the microcrystal grains of the catalyst, enlarges the specific surface area of the catalyst and improves the catalytic activity of the catalyst. The catalyst has lower overpotential and long life when serving as the anode catalyst in an SPE water electrolysis cell. The catalyst is used for the electrodes for oxygen evolution of the SPE water electrolysis cell, catalyst-membrane assemblies (CCM), membrane-electrode assemblies (MEA), regenerative fuel cells (RFC) and sensors.
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Description

technical field

[0001] The invention relates to a solid polymer electrolyte (Solid Polymer Electrolyte, SPE) water electrolysis anode catalyst, in particular to a high-efficiency catalyst applicable to SPE water electrolysis, renewable fuel cells or oxygen production electrodes in various electrolysis applications. Background technique

[0002] Hydrogen is a clean and efficient energy carrier, which is renewable and non-polluting. Hydrogen production by electrolysis of water is an important means of hydrogen production and a very mature technology for producing high-purity hydrogen. Alkaline water electrolysis technology is often used at present, but there are disadvantages such as easy loss of liquid electrolyte and easy corrosion of equipment. Compared with traditional alkaline water electrolysis, solid electrolyte water electrolysis has obvious advantages, such as higher safety and reliability, higher energy efficiency, and the purity of hydrogen produced by SPE water el...

Claims

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