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A metal sulfide-loaded mesoporous carbon catalyst, preparation method and application thereof

A metal sulfide and catalyst technology, applied in electrical components, battery electrodes, circuits, etc., can solve the problems of restricting the development of fuel cells and high cost of use, and achieve the effects of controllable metal sulfide, low cost and simple operation

Inactive Publication Date: 2018-12-21
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the platinum-based catalysts mainly used show excellent activity in the process of catalyzing the oxygen reduction reaction, but platinum is a noble metal element, and the use cost is high, which restricts the development of fuel cells.

Method used

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  • A metal sulfide-loaded mesoporous carbon catalyst, preparation method and application thereof
  • A metal sulfide-loaded mesoporous carbon catalyst, preparation method and application thereof
  • A metal sulfide-loaded mesoporous carbon catalyst, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Add 0.4mL of aniline, 0.3mL of pyrrole and 0.06mL of Triton X-100 into 60mL of deionized water, and sonicate to obtain a uniform mixture;

[0035] (2) 1mmol ferric nitrate nonahydrate and 1mmol cobalt nitrate hexahydrate are added to the mixed solution in step (1), and stirred to obtain a new mixed solution;

[0036] (3) Add 20mL of ammonium persulfate aqueous solution with a concentration of 0.05g / mL to the mixed solution in step (2), then immediately place the mixed solution at 3°C ​​for 24 hours of polymerization, and use the mixed solution after the polymerization reaction is completed Rotary evaporator (evaporating temperature 90°C, negative pressure inside the bottle is 0.2MPa) evaporated excess water and dried to obtain a black intermediate product;

[0037] (4) The black intermediate product obtained in step (3) was placed in a tube furnace under nitrogen protection and subjected to high-temperature heat treatment at 1000° C. for 3 hours, and the heating rat...

Embodiment 2

[0040] (1) Add 0.4mL of aniline, 0.3mL of pyrrole and 0.06mL of Triton X-100 into 60mL of deionized water, and sonicate to obtain a uniform mixture;

[0041] (2) 2mmol ferric nitrate nonahydrate is added in the mixed solution in step (1), stirs to obtain new mixed solution;

[0042] (3) Add 20mL of ammonium persulfate aqueous solution with a concentration of 0.05g / mL to the mixed solution in step (2), then immediately place the mixed solution at 3°C ​​for 24 hours of polymerization, and use the mixed solution after the polymerization reaction is completed Rotary evaporator (evaporating temperature 90°C, negative pressure inside the bottle is 0.2MPa) evaporated excess water and dried to obtain a black intermediate product;

[0043] (4) The black intermediate product obtained in step (3) was placed in a tube furnace under nitrogen protection and subjected to high-temperature heat treatment at 1000° C. for 3 hours, and the heating rate was 5° C. / min;

[0044] (5) The final produ...

Embodiment 3

[0046] (1) Add 0.4mL of aniline, 0.3mL of pyrrole and 0.06mL of Triton X-100 into 60mL of deionized water, and sonicate to obtain a uniform mixture;

[0047] (2) 0.5mmol ferric nitrate nonahydrate and 1.5mmol cobalt nitrate hexahydrate are added to the mixed solution in step (1), and stirred to obtain a new mixed solution;

[0048] (3) Add 20mL of ammonium persulfate aqueous solution with a concentration of 0.05g / mL to the mixed solution in step (2), then immediately place the mixed solution at 3°C ​​for 24 hours of polymerization, and use the mixed solution after the polymerization reaction is completed Rotary evaporator (evaporating temperature 90°C, negative pressure inside the bottle is 0.2MPa) evaporated excess water and dried to obtain a black intermediate product;

[0049] (4) Place the black intermediate product obtained in step (3) under nitrogen protection in a tube furnace for high-temperature heat treatment at 1000° C. for 3 hours, with a heating rate of 5° C. / min;...

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Abstract

A metal sulfide-loaded mesoporous carbon catalyst, a preparation method and application thereof are provided. The method comprises the following steps of adding aniline, pyrrole and trimethoprim X-100into water and uniformly mixed; 2) adding a transition metal salt and uniformly mixing; 3) adding ammonium persulfate aqueous solution, carrying out low-temperature polymerization reaction, evaporating and drying to obtain an intermediate product; 4) carrying out high-temperature heat treatment on the intermediate product, washing, filtering and drying to obtain a metal sulfide supported mesoporous carbon catalyst. The catalyst is used for catalyzing the oxygen reduction reaction. Compared with the prior art, the preparation method of the invention is simple in operation, low in cost and convenient for realizing large-scale industrial production; The prepared catalyst has high catalytic performance and stability for oxygen reduction, and can be used as cathode catalyst in fuel cells.

Description

technical field [0001] The invention belongs to the technical field of fuel cells, and relates to a metal sulfide supported mesoporous carbon catalyst, a preparation method and application thereof. Background technique [0002] Fuel cell (Fuel cell) is a green and efficient energy conversion device, and it is not limited by Carnot's law of thermodynamics. It has great potential application value in the future, whether it is household, business electricity or aerospace fields. , therefore, the development of fuel cells is an important strategy and goal of technological and social development. In a fuel cell, the reaction mechanism of the oxygen reduction reaction (Oxygen Reduction Reaction, ORR) corresponding to the cathode is relatively complex and the reaction process is slow, so the whole process requires an efficient catalyst. At present, platinum-based catalysts mainly used show excellent activity in the process of catalyzing the oxygen reduction reaction, but platinum ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/90
CPCH01M4/9083Y02E60/50
Inventor 朱钰方郭大凯
Owner UNIV OF SHANGHAI FOR SCI & TECH
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