Method for activating membrane electrode of fuel cell

A fuel cell membrane and fuel cell technology, which is applied to fuel cells, fuel cell components, battery electrodes, etc., can solve the problems of low fuel cell power and long activation time.

Active Publication Date: 2008-01-02
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The purpose of the present invention is to provide a fuel cell membrane electrode with a short activation time and high fuel cell power after activation in order to overc

Method used

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  • Method for activating membrane electrode of fuel cell
  • Method for activating membrane electrode of fuel cell
  • Method for activating membrane electrode of fuel cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] This example illustrates the activation method of the fuel cell membrane electrode provided by the present invention

[0038] 1. Preparation and initial performance test of membrane electrode

[0039] (1) Mix 0.2 parts by weight of carbon black (Vulcan XC72R, Cabot), 0.1 parts by weight of PTFE emulsion (FR303A, Shanghai Sanaifu New Material Co., Ltd.) with a solid content of 60% by weight, and 10 parts by weight of deionized water , Ultrasonic dispersion for 30 minutes to obtain a carbon dispersion, and then the carbon dispersion is coated on carbon paper (TGP-H-90, Toray company), after drying at 100 ℃, the weight of the carbon paper is 1 mg / cm 2 , Then placed in a high temperature oven at 350°C for 20 minutes to obtain a gas diffusion layer;

[0040] (2) 0.2 parts by weight of Pt / C catalyst (Hispec8100, product of Johnson Matthey) and 2 parts by weight of nafion dispersion (DE520, product of DUPONT) with a platinum loading of 47.7% by weight are mixed uniformly. The cata...

Embodiment 2

[0049] This example illustrates the activation method of the fuel cell membrane electrode provided by the present invention

[0050] 1. Preparation and initial performance test of membrane electrode

[0051] (1) Mix 0.2 parts by weight of carbon black (Vulcan XC72R, Cabot), 0.1 parts by weight of PTFE emulsion (FR303A, Shanghai Sanaifu New Material Co., Ltd.) with a solid content of 60% by weight, and 10 parts by weight of deionized water, Disperse ultrasonically for 30 minutes to obtain a carbon dispersion, and then coat the carbon dispersion on carbon paper (TGP-H-90, Toray). After drying at 100°C, the carbon paper gains 1 mg / cm 2 , Then placed in a high temperature oven at 350°C for 20 minutes to obtain a gas diffusion layer;

[0052] (2) 0.2 parts by weight of Pt / C catalyst (Hispec8100, product of Johnson Matthey) and 2 parts by weight of nafion dispersion (DE520, product of DUPONT) were mixed uniformly with a platinum loading amount of 47.7% by weight. The catalyst dispersion...

Embodiment 3

[0061] This example illustrates the activation method of the organic fuel cell membrane electrode provided by the present invention

[0062] 1. Preparation and initial performance test of membrane electrode

[0063](1) Mix 0.2 parts by weight of carbon black (Vulcan XC72R, Cabot), 0.06 parts by weight of PTFE emulsion (FR303A, Shanghai Sanaifu New Material Co., Ltd.) with a solid content of 60% by weight, and 10 parts by weight of deionized water, Disperse ultrasonically for 30 minutes to obtain a carbon dispersion, and then coat the carbon dispersion on carbon paper (TGP-H-90, Toray). After drying at 100°C, the carbon paper gains 1 mg / cm 2 , Then placed in a high temperature oven at 350°C for 20 minutes to obtain a gas diffusion layer;

[0064] (2) 0.5 parts by weight of Pt / Ru black catalyst (Hispec6000, product of Johnson Matthey) and 15 parts by weight of nafion dispersion (DE520, product of DUPONT) are mixed uniformly. Ultrasonic dispersion to obtain a catalyst dispersion, and...

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PUM

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Abstract

The invention relates to an activate method of membrane electrode of fuel battery, wherein the fuel battery comprises baffle plates, an anode room 4, a cathode room 5, and a membrane electrode. The membrane electrode is between the baffles, the membrane electrode comprises an anode 1, a cathode 2, and an atom exchange membrane 3 between the anode 1 and the cathode 2, the anode room 4 is between the anode 1 and the baffle plates, and the cathode room 5 is between the cathode 2 and the baffle plates. The method comprises that connecting the anode and cathode of a power supply respectively with the anode 2 and the cathode 2 of fuel battery, adding one external power on the fuel battery, filling fuel into the anode room 4 before closing the power supply, and filling water into the cathode room 5. The active area of membrane electrode activated by the invention is significantly improved, and therefore, the power of fuel battery is improved. The inventive activate method ha simple operation, short activate time, and better repeatability.

Description

Technical field [0001] The present invention relates to a method for activating a membrane electrode, more specifically, to a method for activating a membrane electrode of a fuel cell. Background technique [0002] A fuel cell is an energy conversion device that converts the chemical energy stored in fuel (such as hydrogen, lower alcohol, etc.) and oxidant (oxygen) into electrical energy according to electrochemical principles. Fuel cells have the advantages of high energy conversion rate and environmental friendliness, while Proton Exchange Membrane Fuel Cell (PEMFC) has the advantages of low temperature operation and high specific power, and is a new type of power source that is widely used. [0003] The reaction formulas of the anode reaction and the cathode reaction of the fuel cell using methanol as the fuel are as shown in the reaction formulas (1) and (2), respectively. The oxygen used as the oxidant on the cathode usually comes from air. Like a fuel cell using hydrogen as...

Claims

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Application Information

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IPC IPC(8): H01M4/88H01M8/02H01M8/0297
CPCY02E60/50
Inventor 杨新胜董俊卿
Owner BYD CO LTD
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