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Platinum indium catalyst for fuel cell and its preparation method and application

A technology for fuel cells and catalysts, which is applied in the field of platinum indium catalysts for fuel cells and its preparation. It can solve the problems that the catalytic activity and stability of catalysts need to be improved, cannot meet the large demand for catalysts, and have high manufacturing costs, and achieve excellent oxygen reduction catalytic performance. , Excellent oxygen reduction catalytic performance, evenly distributed effect

Active Publication Date: 2020-12-18
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide a method for preparing a platinum-indium cluster catalyst for fuel cells, which aims to solve the problem of low yield and high manufacturing cost of existing fuel cell catalyst preparation methods, which cannot meet the large demand for catalysts in the industry. And the catalytic activity and stability of the catalyst need to be improved

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  • Platinum indium catalyst for fuel cell and its preparation method and application
  • Platinum indium catalyst for fuel cell and its preparation method and application
  • Platinum indium catalyst for fuel cell and its preparation method and application

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preparation example Construction

[0040] An embodiment of the present invention provides a method for preparing a platinum-indium cluster catalyst for a fuel cell, comprising the following steps:

[0041] S10. Obtain carbon powder, disperse the carbon powder in a strong oxidizing solution, and perform high-temperature hydrothermal treatment to obtain activated carbon powder;

[0042] S20. Obtain an alcohol mixed solution of platinum precursor and indium precursor;

[0043] S30. Dispersing the activated carbon powder in the alcohol mixed solution, heat treatment to volatilize the alcohol solvent, and obtain a mixed powder;

[0044] S40. Under the mixed gas atmosphere of hydrogen and argon, the mixed powder is subjected to high-temperature treatment to obtain a platinum-indium cluster catalyst for fuel cells.

[0045] The preparation method of the platinum-indium cluster catalyst for fuel cells provided by the embodiment of the present invention, firstly, the carbon powder is subjected to high-temperature hydro...

Embodiment 1

[0073] A platinum indium cluster catalyst (Pt 3 InC / -T700), its preparation method comprises the following steps:

[0074] 1) After ultrasonically dispersing 100mg of KJ-600 commercial carbon in 50mL of 10mol / L nitric acid, heat it in water at 160°C for 6 hours;

[0075] 2) Centrifuge the carbon obtained in step 1) and then dry it; and disperse it in ethanol with a concentration of 2.5 mg / ml to obtain carbon / ethanol.

[0076] 3) 10mg, InCl 3 4H 2 O and 53.3 mg, H 2 PtCl 6 ·6H 2 O is dispersed in the carbon / ethanol that 20ml step 2) obtains, stirs evenly, obtains mixed solution;

[0077] 4) The above mixed solution was rotary evaporated at 60°C to obtain a dry mixed powder;

[0078] 5) the mixed powder obtained in step 4) is placed in a tube furnace, and the hydrogen gas integral fraction is 10% H 2 / Ar mixed gas, reacted at 700°C for 2 hours, cooled and collected to obtain a platinum-indium cluster catalyst (Pt 3 In / C-T700).

Embodiment 2

[0080] A platinum indium cluster catalyst (Pt 3 InC / -T550), its preparation method comprises the following steps:

[0081] ① After ultrasonically dispersing 100mg of KJ-600 commercial carbon in 50mL of 10mol / L nitric acid, it was hydrothermally reacted at 160°C for 6 hours;

[0082] ② The carbon obtained in step ① is centrifugally cleaned and then dried; and dispersed in ethanol with a concentration of 2.5 mg / ml to obtain carbon / ethanol.

[0083] ③ 10mg, InCl 3 4H 2 O and 53.3 mg, H 2 PtCl 6 ·6H 2 O is dispersed in the carbon / ethanol that 20ml step 2) obtains, stirs evenly, obtains mixed solution;

[0084] ④The above mixed solution was rotary evaporated at 60°C to obtain a dry mixed powder;

[0085] ⑤The mixed powder obtained in step ④ is placed in a tube furnace, and the hydrogen gas integral fraction is 10% H 2 / Ar mixed gas, after reacting at 550°C for 2 hours, cooling and collecting, the platinum indium cluster catalyst (Pt 3 InC / -T550).

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Abstract

The invention belongs to the technical field of catalysts, and in particular relates to a method for preparing a platinum-indium catalyst for a fuel cell. ; Obtain the alcohol mixed solution of the platinum precursor and the indium precursor; disperse the activated carbon powder in the alcohol mixed solution, heat treatment to volatilize the alcohol solvent, and obtain a mixed powder; Under a mixed gas atmosphere, the mixed powder is subjected to high-temperature treatment to obtain a platinum-indium cluster catalyst for a fuel cell. The preparation method of the platinum-indium cluster catalyst for fuel cells provided by the invention has wide sources of raw materials, the preparation method is simple and low in cost, the catalyst yield is high, and the utilization rate of precious metals is high, and is suitable for large-scale production.

Description

technical field [0001] The invention belongs to the technical field of catalysts, and in particular relates to a platinum-indium catalyst for a fuel cell and a preparation method and application thereof. Background technique [0002] Fuel cell is a high-efficiency and clean power generation device that directly converts chemical energy into electrical energy. It has the advantages of high energy density, high conversion efficiency, low operating temperature, low pollution, and quick start and stop. It is considered to be able to effectively curb environmental deterioration and solve energy problems. The effective energy conversion device of the crisis has been widely valued by the society. According to the type of electrolyte and fuel, fuel cells can be divided into: polymer electrolyte membrane fuel cells, direct methanol fuel cells, phosphoric acid fuel cells, molten carbonate fuel cells, solid oxide fuel cells, etc. In polymer electrolyte membrane fuel cells and direct m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/92
CPCH01M4/921H01M4/926Y02E60/50H01M2008/1095H01M4/881H01M4/8882
Inventor 谷猛王琦赵志亮
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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