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Catalyst for preparing boron hydride by electrolysis and preparing method for catalytic electrode

A catalytic electrode and catalyst technology, applied in the direction of electrodes, electrolysis components, electrolysis process, etc., can solve the problems of high price and low current efficiency, and achieve the effect of low price and high performance.

Inactive Publication Date: 2006-11-15
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to overcome the shortcomings of the above-mentioned existing catalysts, which are expensive and low in current efficiency, the purpose of the present invention is to provide a cheap and efficient method for preparing catalytic electrodes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1: 7.5 g of hydrogen storage material (La 0.7 Nd 0.3 Ni 2.5 Co 2.4 Al 0.1 ), 2g mercury oxide powder and 0.8g polytetrafluoroethylene emulsion (60%wt.) mixed, add a little isopropanol, stir to form a mass, and then repeatedly roll on a double roller to form a thickness of 0.3 ~ 0.5mm Then press the catalytic film on the nickel mesh or steel mesh to form a catalytic electrode.

Embodiment 2

[0019] Example 2: 9.9g hydrogen storage material (La 0.7 Nd 0.3 Ni 2.5 Co 2.4 Al 0.1 ), 0.15g polytetrafluoroethylene emulsion (60%wt.) is stirred into a slurry, then the slurry is filled on the foamed nickel substrate, dried, and then pressed into an electrode sheet with a thickness of 0.5mm.

Embodiment 3

[0020] Example 3: Mix 1g of carbon nanotubes, 3.2g of activated carbon, 0.3g of cadmium oxide powder and 0.5g of polyvinylidene fluoride (PVDF), add 2g of N-methylpyrrolidone, stir into a slurry, and then mix it in a smooth A film with a thickness of 0.1-0.3mm is cast on the glass, and then the catalytic film is pressed on a nickel mesh or steel mesh to form a catalytic electrode.

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Abstract

The invention discloses a catalyst for preparing borohydride by electrolysis and a method for preparing a catalytic electrode containing the catalyst. The catalyst is one of hydrogen storage alloys, carbon materials, and metal borides, or two or more of them mixture. Mix catalyst powder (60-100 parts), additives (0-20 parts), and binder (1-10 parts), add solvent to form a film first, and then press the film on the current-collecting nickel mesh or steel mesh; or Make slurry with a solvent, then coat or fill the surface or inside of porous nickel mesh or steel mesh, press to a certain thickness, and dry to obtain a catalytic electrode. The catalyst and the catalytic electrode of the invention are used for electrolytic preparation of borohydride, and have low price and high-efficiency performance, and the current efficiency can reach more than 50% in alkaline solution.

Description

Technical field [0001] The invention relates to a method for preparing a catalytic electrode, belonging to the fields of energy materials and fuel cell hydrogen sources. Background technique [0002] Hydrogen energy economy is an energy development direction proposed by human society to alleviate resource and environmental problems. The core content of this development is to replace existing fossil fuels (coal, petroleum) with hydrogen as a clean, green, and easy-to-carry fuel. . The fuel cell using hydrogen as fuel is an efficient and clean power generation device, and has gradually become an ideal supporting power source for portable electronic products and electric vehicles. At present, the main problem that restricts the development and application of fuel cells is the storage of hydrogen. However, the current hydrogen storage methods are relatively low, such as high-pressure hydrogen cylinders (1%), hydrogen storage alloys (1.5-3%), etc. . Borohydride is a material with high...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B1/00C25B11/06
Inventor 曹余良杨汉西光先勇艾新平喻敬贤
Owner WUHAN UNIV
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