Preparation and application of carbon-supported amorphous metallic nickel

An amorphous, metallic nickel technology, applied in the field of metal materials, can solve the problems of restricting the commercial development of fuel cells, catalyst poisoning failure, expensive Pt, etc., to achieve enhanced resistance to CO poisoning, good catalytic activity, and long service life. Effect

Inactive Publication Date: 2012-08-01
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional Pt / C catalyst is easy to adsorb the intermediate products of alcohol oxidation, leading to catalyst poisoning and failure, and Pt is expensive and resources are limited, which largely limits the commercial development of fuel cells.

Method used

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  • Preparation and application of carbon-supported amorphous metallic nickel
  • Preparation and application of carbon-supported amorphous metallic nickel
  • Preparation and application of carbon-supported amorphous metallic nickel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Preparation of carbon-supported amorphous metal Ni / C

[0035] Add 25 ml of ethanol and 25 ml of water three times into a 100 ml round bottom flask, and pass N 2 After two hours, add 0.8 g ethylenediaminetetraacetic acid (EDTA), stir and ultrasonic to dissolve, then add 0.3 g NiCl 2 · 6H 2 O, after stirring, add 2 g of KOH to adjust the reaction solution to pH=14, then add 15ml of hydrazine hydrate (80%) and 0.3g of carbon carrier (Vulcan XC-72R) to the round bottom flask, stir and sonicate, the process is all Pass N 2 Under the conditions. Afterwards, the reaction solution was put into the reaction kettle and reacted at 120° C. for 4 hours to obtain a black amorphous metal Ni / C slurry solution. Suction filtration, rapid cooling in cold water, and vacuum drying at 50~60℃ to obtain carbon-supported amorphous metal Ni.

[0036] In carbon-supported amorphous metal nickel Ni / C, the mass of metal Ni is 20% of the mass of carbon-supported amorphous metal nickel Ni / C.

[0037] (...

Embodiment 2

[0041] (1) Preparation of amorphous metal Ni / C

[0042] Add 25 ml of ethanol and 25 ml of water three times into a 100 ml round bottom flask, and pass N 2 After two hours, add 0.8 g ethylenediaminetetraacetic acid (EDTA), stir and ultrasonic to dissolve, then add 0.3 g NiCl 2 · 6H 2 O, after stirring, add 3 g of KOH to adjust the reaction solution to pH=13, then add 15 ml of hydrazine hydrate (80%) and 0.3 g of carbon carrier (Vulcan XC-72R) to the round bottom flask, stir and sonicate, the process is all At pass N 2 Under the conditions. Afterwards, the reaction liquid was put into the reaction kettle and reacted at 90° C. for 5 hours to obtain a black amorphous metal Ni / C slurry solution. Suction filtration, rapid cooling in cold water, and vacuum drying at 50~60℃ to obtain carbon-supported amorphous metal Ni.

[0043] (2) Preparation of NiPd / C catalyst

[0044] Add 30 mg PdCl to the flask 2 Dissolve with a small amount of concentrated hydrochloric acid and ultrasonically, then a...

Embodiment 3

[0047] (1) Preparation of amorphous metal Ni / C

[0048] Add 25 ml of ethanol and 25 ml of water three times into a 100 ml round bottom flask, and pass N 2 After two hours, add 0.8 g ethylenediaminetetraacetic acid (EDTA), stir and ultrasonic to dissolve, then add 0.3 g NiCl 2 · 6H 2 O, after stirring, add 2 g of KOH to adjust the reaction solution to pH=12, then add 15 ml of hydrazine hydrate (80%) and 0.45 g of carbon carrier (Vulcan XC-72R) into the round bottom flask, stir and sonicate, the process is all At pass N 2 Under the conditions. Then, the reaction solution was put into the reaction kettle and reacted at 160° C. for 4 hours to obtain a black amorphous metal Ni / C slurry solution. Suction filtration, rapid cooling in cold water, and vacuum drying at 50~60℃ to obtain carbon-supported amorphous metal Ni.

[0049] (2) Preparation of NiPtRu / C catalyst

[0050] Add 30 ml EG, 5.6 ml 20 mg / ml H in the flask 2 PtCl 6 With 2.9mL 20 mg / ml RuCl 3 · XH 2 O, stir to dissolve, adjust p...

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Abstract

The invention provides a preparation method for carbon-supported amorphous metallic nickel, which belongs to the technical field of metallic materials. The carbon-supported amorphous metallic nickel provided in the invention is prepared by using NiCl2.6H2O and ethylene diamine tetraacetic acid as raw materials and employing a hydrothermal process for reduction; amorphous metallic nickel has good dispersibility and a small specific surface area on a carbon support; a fuel cell noble metal catalyst using amorphous metallic nickel as a precursor has the characteristics of good stability, high activity, a long service life and the like, shows good catalytic activity during the process of catalytic oxidation of the anode of a fuel cell and is a high performance catalyst for a fuel cell. Since amorphous metallic nickel can produce electronic effects and synergism together with noble metal atoms (e.g., platinum atoms, palladium atoms, platinum-ruthenium atoms and the like), the catalysis effect of the catalyst is promoted, resistance to CO poisoning of the catalyst is enhanced, the usage amount of noble metals is effectively reduced, and cost for the catalyst is reduced.

Description

Technical field [0001] The invention belongs to the technical field of metal materials, and relates to a carbon-supported amorphous metal nickel material and a preparation method thereof; the invention also relates to the application of the carbon-supported amorphous metal nickel as a precursor in the preparation of a fuel cell precious metal catalyst. Background technique [0002] Metal Ni is a transition metal with magnetic properties, hard, strong corrosion resistance, heat resistance, plasticity and toughness. Metal Ni is not only a basic material for manufacturing nickel alloys, but can also form alloys with metal elements such as Fe, Cu, and Al. At present, Ni and its alloys can be used in rocket technology equipment, atomic reactors, alkaline storage batteries, porous filters, catalysts, and anti-corrosion plating. [0003] Amorphous metal, also known as "glassy metal", refers to a metal material with disordered structure on the atomic scale. Its structural characteristics ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755B01J23/89H01M4/92
CPCY02E60/50
Inventor 王辉王星砾王荣方王克亮答花花
Owner NORTHWEST NORMAL UNIVERSITY
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