Method for manufacturing core-shell type supported catalysts and core-shell type supported catalysts formed thereby

A supported catalyst, core-shell technology, applied in the field of preparing core-shell supported catalysts, can solve problems such as industrial difficulties in mass production, and achieve the effects of optimizing loading, shortening time, and reducing the amount of platinum

Inactive Publication Date: 2013-06-19
HYUNDAI MOTOR CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, mass production using this method is industrially difficult because a reduction process requiring a high-temperature heat treatment process is performed

Method used

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  • Method for manufacturing core-shell type supported catalysts and core-shell type supported catalysts formed thereby
  • Method for manufacturing core-shell type supported catalysts and core-shell type supported catalysts formed thereby
  • Method for manufacturing core-shell type supported catalysts and core-shell type supported catalysts formed thereby

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Embodiment

[0067] Hereinafter, the present invention will be described in detail with reference to the following examples, which illustrate embodiments of the present invention and are not intended to limit the scope of the present invention.

[0068] [Example]

[0069] According to the preparation method of the present invention, a catalyst is prepared, wherein palladium (Pd) and platinum (Pt) are supported on the surface of carbon at a metal weight ratio (Pd:Pt) of 5:5, 3:7 and 7:3 .

[0070] Hereinafter, the preparation process will be described in detail.

[0071] First, 300 g of deionized water (DI water) was mixed with 300 g of acetylene black to form a 600 mg mixture, and the mixed solution was repeatedly stirred, homogenized, and sonicated to disperse the acetylene black. Then, the resulting solution was mixed with SDS (sodium dodecyl sulfate) added at 0.5 times the weight relative to carbon. The addition of SDS disperses the carbon uniformly in the aqueous solution and acts t...

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Abstract

A method for manufacturing a core-shell type supported catalyst, wherein alloy particles having a core-shell structure with a different interior and exterior are supported on a complex carbon support. The method includes: 1) dissolving and dispersing a carbon support in a solvent using a stabilizer; 2) dissolving a core precursor in the solution, and adding a strong reducing agent to reduce and support a transition metal of the core precursor on a surface of the carbon support; 3) filtering and washing the carbon support on which the transition metal is supported; 4) re-dispersing the filtered and washed carbon support in a shell precursor aqueous solution; and 5) adding a weak reducing agent to the solution of step 4) at 60-80 DEG C. so that metal ions of a shell precursor are selectively reduced and deposited on the transition metal.

Description

technical field [0001] The invention relates to a method for preparing a core-shell type supported catalyst. More specifically, the present invention relates to a method for preparing a core-shell type supported catalyst in which alloy particles having different inner and outer core-shell structures are supported on a composite carbon support. Background technique [0002] A fuel cell is a device that converts the chemical energy of a fuel, such as hydrogen, into electrical energy. Such fuel cells have theoretical efficiencies as high as 100%, and typically have high efficiencies of 80-50%. Thus, much research has been done on the efficient use of fuel cells and the use of hydrogen as a renewable energy source, especially with limited available fossil fuel resources. [0003] The electrical energy generation of fuel cells is mainly based on electrochemical reactions accompanied by electron transfer. It is important to initiate a reaction that minimizes the overvoltage in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/44B01J35/00H01M4/92
CPCH01M4/921H01M4/926Y02E60/50B01J13/02B01J21/00B01J23/42B01J23/44
Inventor 卢范旭
Owner HYUNDAI MOTOR CO LTD
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