Catalyst used for preparation of hydrogen through water electrolysis, and preparation method thereof

A technology for producing hydrogen from catalyst and water, which is applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc., to achieve stable performance, simple preparation, and high catalytic efficiency

Active Publication Date: 2014-07-30
INST OF PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, there has been no report on the use of amorphous Ni-B for electrocatalytic water splitting to produce hydrogen and obtain excellent catalytic performance.

Method used

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  • Catalyst used for preparation of hydrogen through water electrolysis, and preparation method thereof
  • Catalyst used for preparation of hydrogen through water electrolysis, and preparation method thereof
  • Catalyst used for preparation of hydrogen through water electrolysis, and preparation method thereof

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Embodiment 1

[0042] The following uses an example of supporting amorphous Ni-B on a glassy carbon electrode as an electrocatalytic water decomposition and hydrogen evolution catalyst to further describe this patent in detail.

[0043] The specific preparation process of amorphous Ni-B supported on glassy carbon electrode is as follows:

[0044] (1) 5mm diameter glass carbon electrode (glass carbon, referred to as GC in the figure), using 5 and 0.25μm Al respectively 2 O 3 The aqueous solution is polished on the suede until the mirror surface is bright (the carrier except the glassy carbon electrode does not need to be polished), and it is ultrasonically cleaned with water and ethanol solution successively;

[0045] (2) Put the mirror-bright glassy carbon electrode in a 0.5M / L, pH=7 phosphate buffer solution, and apply a 2.0V voltage on the glassy carbon electrode to the Ag / AgCl reference electrode for anodic electrolysis for 500s, so that The surface of glassy carbon is partially hydroxylated and...

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Abstract

The invention provides a catalyst used for the preparation of hydrogen through water electrolysis. The catalyst is amorphous Ni-B, and an atom ratio of Ni to B is 1.0-5.0. The invention also provides a preparation method for the catalyst. The method is characterized in that Ni-B is loaded on the surface of a carrier through a chemical plating method, and the feeding atom ratio of B to Ni in a chemical plating liquid is 3.0-10.0. The amorphous Ni-B is successfully applied in the catalysis of a hydrogen evolution reaction through water decomposition, and the reaction activity of the amorphous Ni-B can be comparable with that of platinum. The amorphous Ni-B has the advantages of low hydrogen evolution over-potential, high catalytic efficiency, stable performances, low price and simple preparation, and becomes one of the most ideal catalysts for substituting the present noble metal Pt catalyst.

Description

Technical field [0001] The invention belongs to the field of catalysis for water splitting to produce hydrogen, and specifically relates to the application of an amorphous Ni-B alloy to a cathode material for electrocatalytically splitting water to produce hydrogen. Background technique [0002] Hydrogen energy has high combustion value, clean and pollution-free, abundant resources, and a wide range of applications. The development of hydrogen energy is of great significance to alleviating the energy and environmental problems of today's society. Catalytic hydrogen production by splitting water is the most important way to obtain hydrogen energy on a large scale. For the hydrogen evolution reaction, platinum (Pt), a noble metal element, has excellent electrocatalytic decomposition of water and hydrogen evolution activity. Its hydrogen evolution overpotential is low, but it is expensive and difficult to apply on a large scale. For this reason, it is researched to find a non-noble ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/06C25B1/04C23C18/32B01J23/755
CPCY02E60/36
Inventor 曾敏王文龙王浩赵冲齐阔魏家科田学增杨是赜白雪冬
Owner INST OF PHYSICS - CHINESE ACAD OF SCI
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