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Preparation method of carbon supported cobalt phthalocyanine catalytic material

A carbon-supported cobalt phthalocyanine catalytic material and catalytic material technology, applied in the field of electrochemistry, can solve the problems of difficult to achieve large output working voltage, low catalytic activity of the product, complicated preparation process, etc., to achieve enhanced oxygen reduction activity and stable Sexuality, low price, wide range of raw material resources

Inactive Publication Date: 2010-11-17
TIANJIN JIUJU ENERGY TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the preparation process, stirring, reflux, washing, secondary heat treatment and other processes are required, the preparation process is complicated and the cost is high
The obtained product has low catalytic activity and poor stability, and it is difficult to output a large working voltage at a large current density

Method used

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  • Preparation method of carbon supported cobalt phthalocyanine catalytic material
  • Preparation method of carbon supported cobalt phthalocyanine catalytic material
  • Preparation method of carbon supported cobalt phthalocyanine catalytic material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) Put Cabot's VulcanXC-72 product at a concentration of 6mol L -1 Hydrochloric acid solution to remove possible chloride impurities, filter to remove the solution and wash with a large amount of distilled water. Then immerse and oxidize with a nitric acid solution with a concentration of 65%, filter to remove the solution, wash with a large amount of distilled water, dry at 80°C, and grind to obtain pretreated VulcanXC-72 for use.

[0037] (2) VulcanXC-72 2.2g, phthalic anhydride 2.98g, urea 4.8g, CoCl 2 ·6H 2 O0.98g (to make the metal content 8wt%), ammonium molybdate 0.05g mixed, after that, put it in a mortar and grind it fully, then put it in a muffle furnace to raise the temperature to 900 ° C, keep the temperature for 3 hours, and obtain carbon-supported cobalt phthalocyanine Composite catalytic material CoPc / C.

[0038] The obtained catalytic material is made into an air electrode according to the traditional method, and its effective area is 1 cm 2 , to 4c...

Embodiment 2

[0041] (1) Put Cabot's VulcanXC-72 product into 30% H 2 o 2 Soak in water for 24 hours, remove the solution by filtration, wash with a large amount of deionized water, dry at 80°C, and grind to obtain pretreated VulcanXC-72.

[0042] (2) VulcanXC-72 2.2g, phthalic anhydride 2.98g, urea 4.8g, CoCl 2 ·6H 2 O0.98g (to make the metal content 8wt%), ammonium molybdate 0.05g mixed, after that, put it in a mortar and grind it fully, then put it in a muffle furnace to raise the temperature to 900 ° C, keep the temperature for 3 hours, and obtain carbon-supported cobalt phthalocyanine Composite catalytic material CoPc / C.

[0043] The obtained catalytic material is made into an air electrode according to the traditional method, and its effective area is 1 cm 2 , to 4cm 2 The platinum sheet was used as the counter electrode, and the Hg / HgO electrode was used as the reference electrode.

[0044] In the air atmosphere, 6mol / LKOH electrolyte, the polarization curve of the electrode of...

Embodiment 3

[0046] (1) Put Cabot's VulcanXC-72 product into 30% H 2 o 2 Soak in water for 24 hours, remove the solution by filtration, wash with a large amount of deionized water, dry at 80°C, and grind to obtain pretreated VulcanXC-72.

[0047] (2) VulcanXC-72 2.2g, CoCl 2 ·6H 2 O 0.30g (to make the metal content 2.5wt%), phthalic anhydride 2.98g, urea 4.8g, ammonium molybdate 0.05g mixed, after that, put it in a mortar and grind it thoroughly before putting it in a muffle furnace to raise the temperature To 900 ℃, constant temperature 3h, prepared carbon-supported cobalt phthalocyanine composite catalytic material CoPc / C.

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Abstract

The invention discloses a preparation method of a carbon supported cobalt phthalocyanine (CoPc / C) catalytic material and aims at providing a preparation method of a catalytic material with simple and stable technology, low cost and easy industrialized production. The method comprises the following steps: placing phthalic anhydride, urea, CoCl2.6H2O, ammonium molybdate and carbon black powder processed by acid or H2O2 in a mortar to fully grind, heating the mixture to 200-900 DEG C, and keeping temperature for 3h to obtain the CoPc / C catalytic material, wherein the metal content of the material is 2.5-8wt%. The preparation method of the invention uses preprocessed carbon black as carrier, phthalic anhydride, urea and CoCl2.6H2O as raw materials and ammonium molybdate as catalytic material to directly add the carbon black material processed by acid in the reactant system for high-temperature pyrolysis and obtain the CoPc / C material in one step. The preparation method is simple, the cost is low, the production efficiency is high and the industrial production of the material is easy to realize.

Description

technical field [0001] The invention relates to the field of electrochemistry, and more specifically relates to a preparation method of a carbon-supported cobalt phthalocyanine catalytic material used for the oxygen reduction reaction of an air electrode of a fuel cell. Background technique [0002] The electrochemical reduction of oxygen is the cathodic reaction of all types of fuel cells, and although it is easier to proceed under alkaline conditions than under acidic conditions, the kinetics of the oxygen reduction electrode reaction is still slow. In order to realize the commercialization of fuel cells, it is of great significance to study low-cost non-noble metal catalytic materials. [0003] Macrocyclic compounds such as phthalocyanine (Pc), tetramethoxyphenylporphyrin (TMPP), tetraphenylporphyrin (TPP), etc. have multi-dentate coordination and macrocyclic structure characteristics, and can be combined with transition metal ions M, Such as Fe, Co, Mn, Ni, etc., form t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/22H01M4/90
CPCY02E60/50
Inventor 周德壁
Owner TIANJIN JIUJU ENERGY TECH DEV
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