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Foam metal electrode with high catalyst utilization rate and for direct alcohol fuel cell and preparation method of foam metal electrode

A foam metal, fuel cell technology, applied in the direction of fuel cells, battery electrodes, circuits, etc., can solve the problems of low catalyst utilization rate and smooth surface of the support layer.

Inactive Publication Date: 2021-06-01
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The electrode can effectively solve the problems of smooth support layer surface and low catalyst utilization rate in existing metal foam electrodes

Method used

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  • Foam metal electrode with high catalyst utilization rate and for direct alcohol fuel cell and preparation method of foam metal electrode
  • Foam metal electrode with high catalyst utilization rate and for direct alcohol fuel cell and preparation method of foam metal electrode
  • Foam metal electrode with high catalyst utilization rate and for direct alcohol fuel cell and preparation method of foam metal electrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] like figure 1 Shown, the direct alcohol fuel cell foam metal electrode of described high catalyst utilization rate, preparation method comprises the following steps:

[0025] (1) Soak 2 cm* 2 cm nickel foam in acetone solution for 20 minutes and take it out;

[0026] (2) Put it in a mixed acid with glacial acetic acid mass fraction of 50 wt.%, nitric acid mass fraction of 30 wt.%, sulfuric acid mass fraction of 10 wt.% and phosphoric acid mass fraction of 10 wt.%. Soak in the solution for 15 s, take it out, and rinse it with deionized water;

[0027] (3) Put the nickel foam treated with the mixed acid into a solution with a volume of 1.10 mL and a concentration of 15 mmol / L Na 2 PdCl 4 Soak in the solution for 12 h, take it out and dry it at 60°C for 2 h to prepare; the Pd loading on the foamed nickel electrode is 0.35 mg / cm 2 .

[0028] Battery test:

[0029] The prepared foam metal electrode and commercial carbon paper electrode were respectively placed on both ...

Embodiment 2

[0031] A direct alcohol fuel cell foam metal electrode with high catalyst utilization, the preparation method comprising the following steps:

[0032] (1) Soak 3 cm* 3 cm copper foam in isopropanone solution for 60 min, then take it out;

[0033] (2) Put it in a mixed acid with glacial acetic acid mass fraction of 60 wt.%, nitric acid mass fraction of 25 wt.%, sulfuric acid mass fraction of 5 wt.% and phosphoric acid mass fraction of 10 wt.%. Soak in the solution for 60 s, take it out, and rinse it with deionized water;

[0034] (3) Put the mixed acid-treated copper foam in a volume of 1.73 mL and a concentration of 50 mmol / L K 2 PtCl 6 Soak in the solution for 2 hours, take it out and dry it at 80°C for 6 hours to prepare; wherein, the Pt loading on the foamed nickel electrode is 1.5mg / cm 2 .

[0035] Battery test:

[0036] The anode supplies a mixture of 3 mol / L methanol and 3 mol / L potassium hydroxide, and other battery test parameters are the same as in Example 1. Th...

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Abstract

The invention provides a foam metal electrode with a high catalyst utilization rate and for a direct alcohol fuel cell and a preparation method of the foam metal electrode. The preparation method comprises the following steps: firstly, soaking foam metal in an organic solvent for 10-60 minutes, taking out the foam metal, soaking the foam metal in a mixed acid solution for 10-120 seconds, and washing the foam metal with deionized water; and finally, soaking the foam metal treated by mixed acid in a catalyst precursor solution, and conducting drying to obtain the foam metal electrode. The preparation method of the electrode has the advantages of simple manufacturing process, low cost and high catalyst utilization rate.

Description

technical field [0001] The invention belongs to the technical field of fuel cells, and in particular relates to a direct alcohol fuel cell foam metal electrode with high catalyst utilization rate and a preparation method thereof. Background technique [0002] Under the background of protecting the environment and alleviating the energy crisis, the development of new energy is an important part of my country's energy development and transformation. Direct alcohol fuel cell is an electrochemical power generation device that directly uses alcohol solution (methanol, ethanol, etc.) and oxygen to undergo oxidation and reduction reactions on the anode and cathode sides, respectively, and has the advantages of green and high efficiency. The membrane electrode is the core component of the fuel cell, and the electrode support material that constitutes the membrane electrode is more important. Compared with traditional carbon fiber support materials, such as carbon paper and carbon c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/88H01M4/86H01M8/1011
CPCH01M4/8605H01M4/8842H01M8/1011Y02E60/50Y02P70/50
Inventor 徐谦张加佳张玮琦苏华能马强
Owner JIANGSU UNIV
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