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A kind of preparation method of highly active loaded octahedral ternary alloy catalyst

A ternary alloy, supported technology, applied in electrical components, structural parts, battery electrodes, etc., can solve the problem of low electrocatalyst activity, achieve the effect of convenient operation, improve catalyst activity, and reduce platinum content

Active Publication Date: 2020-10-23
SUZHOU HYDROGINE POWER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of low electrocatalyst activity and rational utilization of platinum resources, and to provide a preparation method of a highly active loaded octahedral ternary alloy catalyst

Method used

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  • A kind of preparation method of highly active loaded octahedral ternary alloy catalyst
  • A kind of preparation method of highly active loaded octahedral ternary alloy catalyst
  • A kind of preparation method of highly active loaded octahedral ternary alloy catalyst

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Embodiment 1

[0019] A method for preparing a highly active supported octahedral ternary alloy catalyst. The preparation method is as follows: S1. The carbon carrier is heated by a vacuum oven, and the vacuum degree of the vacuum oven is -0.1MPa. The heating method is as follows: first heat up, then heat up, the temperature of the heat preservation is 80 ℃ ~ 200 ℃, the time of the heat preservation is 6h ~ 15h; S2, using ultrasound to 1mmol of platinum salt (Pt(CH 3 COO) 2 ), 0.5mmol nickel salt (Ni(CH 3 COO) 2 ), 0.5mmol copper salt (Cu(CH 3 COO) 2 ) Dissolve in 40ml of organic solvent (chloroform) until all the solid matter is dissolved to obtain the precursor mixture solution; S3, under the conditions of a pressure of 0.03MPa and a temperature of 80°C, drop the precursor mixture solution obtained in step S2 dropwise Into the 0.8g carbon support (carbon nanotubes) obtained in step S1, fully impregnated to obtain a carbon support mixture; S4, continue to pass high-purity nitrogen to the carbo...

Embodiment 2

[0022] A method for preparing a highly active supported octahedral ternary alloy catalyst. The preparation method is as follows: S1. The carbon carrier is heated by a vacuum oven, and the vacuum degree of the vacuum oven is -0.1MPa. The heating method is as follows: first heat up, then heat up, the temperature of the heat preservation is 80 ℃ ~ 200 ℃, the time of the heat preservation is 6h ~ 15h; S2, the use of ultrasonic wave 2.5mmol platinum salt (H 2 PtCl 6 ·6H 2 O), 1.5mmol cobalt salt (CoCl 2 ·6H 2 O), 1.5mmol copper salt (Cu(CH 3 COO) 2 ) Dissolve in 30ml of organic solvent (acetone) until the solid matter is completely dissolved to obtain the precursor mixed solution; S3, under the conditions of a pressure of 0.06MPa and a temperature of 90°C, drop the precursor solution obtained in step S2 dropwise Pour into the 0.7g carbon carrier (XC-72R) obtained in step S1, and fully impregnate it to obtain a carbon carrier mixture; S4, continuously pass high-purity nitrogen to the c...

Embodiment 3

[0025] A method for preparing a highly active supported octahedral ternary alloy catalyst. The preparation method is as follows: S1. The carbon carrier is heated by a vacuum oven, and the vacuum degree of the vacuum oven is -0.1MPa. The heating method is: first heat up, then heat up, the temperature of the heat preservation is 80 ℃ ~ 200 ℃, the time of the heat preservation is 6h ~ 15h; S2, using ultrasonic waves to 3mmol of platinum salt (K 2 PtCl 6 ), 1.5mmol cobalt salt (Co(CH 3 COO) 2 ), 1.5mmol copper salt (Cu(NO 3 ) 2 ) Is dissolved in an organic solvent (a mixed solution of 20ml of acetone and 30ml of ethanol) until the solid matter is completely dissolved to obtain a precursor mixed solution; S3, under the conditions of a pressure of 0.08MPa and a temperature of 90°C, the precursor obtained in step S2 The liquid mixture solution was dripped dropwise into the 1.0g carbon carrier obtained in step S1, and fully impregnated to obtain a carbon carrier mixture; S4, the carbon c...

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Abstract

The invention relates to a preparation method of a highly active supported octahedral ternary alloy catalyst, belonging to the field of fuel cells. The preparation method particularly comprises the following steps: dissolving platinum salts and salts of any two transition metals in an organic solvent or water by ultrasonic wave until all solid substances are dissolved to obtain a precursor mixed solution; At the pressure of 0.03 MPa to 0.1 MPa and the temperature of 50 DEG C to 100 DEG C, dripping the precursor mix solution into a vacuum heat-treat carbon carrier, and fully impregnating the mixture to obtain a carbon carrier mixture; placing a carbon carrier mixture in a high-purity nitrogen atmosphere, introducing a reducing gas to reduce the carbon carrier mixture, and after the reduction is completed, placing the carbon carrier mixture in a high-purity nitrogen atmosphere, coolling to room temperature, and finally obtaining a highly active supported octahedral ternary alloy catalyst. The method of the invention is simple in process, convenient in operation and easy to realize batch production.

Description

Technical field [0001] The invention relates to a method for preparing a highly active supported octahedral ternary alloy catalyst, which belongs to the field of fuel cells. Background technique [0002] Compared with traditional internal combustion engines, fuel cells convert the chemical energy of fuel into electrical energy through electrochemical reactions. They have the advantages of high efficiency and zero emissions, and are therefore favored by scientists. Hydrogen energy is the link between the transmission and integration of multiple energy sources, and is one of the cores of the future clean and low-carbon energy system. As a very promising fuel cell, the proton exchange membrane fuel cell is an ideal energy conversion for the wide application of hydrogen energy. Device. Electrocatalyst, as one of the key materials of proton exchange membrane fuel cells, directly affects the oxygen reduction kinetics of the proton exchange membrane fuel cell cathode, which in turn aff...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/92
CPCH01M4/921H01M4/926Y02E60/50
Inventor 范书琼吴丹米诗阳王秀张晓华朱威
Owner SUZHOU HYDROGINE POWER TECH CO LTD
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