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A kind of preparation method of alkaline direct methanol fuel cell anode catalyst

A methanol fuel cell and catalyst technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of high cost, reduced catalytic performance, poisoning, etc., and achieve the effects of low production cost, high current density, and easy operation

Inactive Publication Date: 2017-01-18
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the single-component Pt catalyst is not only expensive but also easily poisoned by the adsorption of intermediate products (such as CO) produced by methanol oxidation, which greatly reduces its catalytic performance.

Method used

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  • A kind of preparation method of alkaline direct methanol fuel cell anode catalyst
  • A kind of preparation method of alkaline direct methanol fuel cell anode catalyst
  • A kind of preparation method of alkaline direct methanol fuel cell anode catalyst

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0024] A preparation method of an alkaline direct methanol fuel cell anode catalyst:

[0025] FeSnO(OH) 5 Preparation of nanoparticles:

[0026] (1) Add 3.48 g FeSO 4 Add deionized water to make 25 mL solution A, the concentration is 0.9 mol / L;

[0027] (2) 4.28g SnCl 4 Add deionized water to make 25mL solution B, the concentration is 0.66 mol / L;

[0028] (3) Mix 12.5 mL of solution A and 12.5 mL of solution B respectively, and under the condition of magnetic stirring, control the temperature at 60°C and keep the temperature constant to obtain solution 1;

[0029] (4) Add 4g of sodium hydroxide to 25ml of deionized water to dissolve it, and the concentration is 4 mol / L NaOH solution;

[0030] (5) Under the condition of magnetic stirring, slowly add the NaOH solution solution into the solution 1, and stir; the stirring time is 6 hours, and the solution 2 is obtained;

[0031] (6) Centrifuge and wash solution 2 with water and ethanol for 5 times; dry at 70°C for 7 hours to...

Embodiment 2

[0043] A preparation method of an alkaline direct methanol fuel cell anode catalyst:

[0044] FeSnO(OH) 5 Preparation of nanoparticles:

[0045] (1) Add 1.14 g FeSO 4 Add deionized water to make 25 mL solution A, the concentration is 0.3 mol / L;

[0046] (2) 1.96 g SnCl 4 Add deionized water to make 25mL solution B, the concentration is 0.3 mol / L;

[0047] (3) Mix 12.5 mL of solution A and 12.5 mL of solution B respectively, and under the condition of magnetic stirring, control the temperature at 80°C and keep the temperature constant to obtain solution 1;

[0048] (4) Add 3g of sodium hydroxide to 25ml of deionized water to dissolve it into a sodium hydroxide solution with a concentration of 3 mol / L;

[0049] (5) Under the condition of magnetic stirring, slowly add the sodium hydroxide solution into the solution 1 and stir; the stirring time is 6 hours to obtain the solution 2;

[0050] (6) Centrifuge and wash solution 2 with water and ethanol for 5 times; dry at 70°C for ...

Embodiment 3

[0060] A preparation method of an alkaline direct methanol fuel cell anode catalyst:

[0061] FeSnO(OH) 5 Preparation of nanoparticles:

[0062] (1) Add 3.8 g FeSO 4 Add deionized water to make 25 mL solution A, the concentration is 1 mol / L;

[0063] (2) 6.51g SnCl 4 Add deionized water to make 25mL solution B, the concentration is 1 mol / L;

[0064] (3) Mix 12.5 mL of solution A and 12.5 mL of solution B respectively, and under the condition of magnetic stirring, control the temperature at 60°C and keep the temperature constant to obtain solution 1;

[0065] (4) Add 4g of sodium hydroxide to 25ml of deionized water to dissolve it, and the concentration is 4 mol / L of sodium hydroxide solution;

[0066] (5) Under the condition of magnetic stirring, slowly add the sodium hydroxide solution into the solution 1 and stir; the stirring time is 6 hours to obtain the solution 2;

[0067] (6) Centrifuge and wash solution 2 with water and ethanol for 5 times; dry at 70°C for 7 hour...

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Abstract

The invention provides a preparation method of an alkaline direct methanol fuel cell anode catalyst and belongs to the technical field of electric catalysis and energy. The catalyst is a Pt / FeSnO(OH)5 hollow nanometer composite material. The preparation process of the catalyst comprises the following steps: firstly, preparing FeSnO(OH)5 hollow nanometer particles by adopting a chemical precipitation method; and with the FeSnO(OH)5 hollow nanometer particles as a carrier, reducing chloroplatinic acid by using a reducing agent and loading reduced chloroplatinic acid to the surfaces and inside of the FeSnO(OH)5 hollow nanometer particles to successfully prepare the Pt / FeSnO(OH)5 hollow nanometer composite material. The preparation method disclosed by the invention has the advantages that the preparation cost is low, the preparation process is simple and feasible, and Pt is uniformly distributed on the carrier; as an anode catalyst of an alkaline direct methanol fuel cell, Pt / FeSnO(OH)5 is large in current density, high in catalytic activity, high in toxin resistance and good in conductivity, so the catalyst is a good anode catalyst for the alkaline methanol fuel cell.

Description

technical field [0001] The invention belongs to the field of preparation of electrode catalysts, and in particular relates to a method for preparing an anode catalyst of an alkaline direct methanol fuel cell. Background technique [0002] Direct Methanol Fuel Cells (DMFCs for short) use methanol as fuel. Methanol is rich in sources, low in price, liquid at normal temperature and pressure, easy to carry and store, free of C-C bonds, and high in electrochemical activity. DMFC also has the advantages of small size, light weight, simple structure, high reliability, and easy maintenance. Therefore, DMFC is very suitable for portable mobile power sources, such as notebook computers and mobile phones. [0003] Although the research on DMFC has made remarkable achievements, the performance and cost still cannot meet the needs of commercial applications, and there are still major technical problems, such as the slow kinetics of methanol oxidation reaction and the low performance of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/92H01M4/88
CPCH01M4/8803H01M4/921Y02E60/50
Inventor 俞瀚李常荣林清桂
Owner FUZHOU UNIV