Fixture used for moulding of proton exchange membrane fuel cell membrane electrode and preparation method for proton exchange membrane fuel cell membrane electrode

A technology of proton exchange membrane and fuel cell membrane, which is applied in the direction of battery electrodes, circuits, electrical components, etc., can solve the problems of unfavorable electrochemical performance of proton exchange membrane fuel cells, affecting discharge performance, poor bonding strength of membrane electrodes, etc., to achieve Effects of improved electrochemical performance, excellent discharge performance, and high porosity

Active Publication Date: 2013-06-26
CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0008] However, the existing technology is to directly use the traditional hot pressing method to prepare the membrane electrode. If a high-precision molding machine is not introduced, the obtained membrane electrode will have poor bonding strength, which will affect its discharge performance and is not conducive to further improving the proton Electrochemical Performance of Exchange Membrane Fuel Cells

Method used

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  • Fixture used for moulding of proton exchange membrane fuel cell membrane electrode and preparation method for proton exchange membrane fuel cell membrane electrode
  • Fixture used for moulding of proton exchange membrane fuel cell membrane electrode and preparation method for proton exchange membrane fuel cell membrane electrode
  • Fixture used for moulding of proton exchange membrane fuel cell membrane electrode and preparation method for proton exchange membrane fuel cell membrane electrode

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preparation example Construction

[0056] The invention provides a method for preparing a membrane electrode of a proton exchange membrane fuel cell, comprising:

[0057] The anode diffusion layer, the anode catalyst layer, the proton exchange membrane layer, the cathode catalyst layer, and the cathode diffusion layer are sequentially placed between the first flat plate and the second flat plate placed in parallel, and the first flat plate and the second flat plate are provided with through hole, the screw rod connects the first plate and the second plate through the through hole;

[0058] The torque of the screw rod is set to 0.5N·m~5N·m, the first plate is provided with a screw hole, and the set screw rod tightens the second plate through the screw hole to complete the fixation;

[0059] The fixed first plate, the second plate, and the anode diffusion layer, anode catalyst layer, proton exchange membrane layer, cathode catalyst layer, and cathode diffusion layer placed between the first plate and the second p...

Embodiment 1

[0085] Spray 5mg / cm on a piece of 2cm×7cm anode carbon paper 2 Platinum ruthenium black catalyst to obtain catalyst anode layer; Spray coating 5mg / cm2 on another 2cm×7cm cathode carbon paper 2 Platinum black catalyst, to obtain the catalyst cathode layer; these two carbon papers are placed on both sides of a 3cm × 10cm Nafion115 membrane (purchased from DuPont), the catalyst is in contact with the Nafion115 membrane respectively, and then these membrane electrode assemblies are placed At figure 1 Between the first flat plate and the second flat plate of the clamp shown, both flat plates are made of steel plates;

[0086] The torque of the screw that connects and fixes the two plates is set to 1N·m~1.3N·m, the first plate is provided with a screw hole, and the set screw rod tightens the second plate through the screw hole, complete fixation;

[0087] Place the clamps with each assembly of the membrane electrode on a flat plate molding machine, heat at 200°C for 10 minutes, t...

Embodiment 2

[0090] Spray 2mg / cm on a piece of 2cm×2cm anode carbon paper 2 Platinum ruthenium black catalyst to obtain catalyst anode layer; spray 2mg / cm2 on another 2cm×2cm cathode carbon paper 2 Platinum black catalyst, to obtain the catalyst cathode layer; these two carbon papers are placed on both sides of a 3cm × 3cm Nafion117 membrane (purchased from DuPont), the catalyst is in contact with the Nafion117 membrane respectively, and then these membrane electrode assemblies are placed At figure 1 Between the first flat plate and the second flat plate of the fixture shown, both flat plates are made of alloy aluminum plates;

[0091] The torque of the screw rod that connects and fixes the two plates is set to 0.8N·m~1N·m, the first plate is provided with a screw hole, and the set screw rod tightens the second plate through the screw hole, complete fixation;

[0092] Place the fixed clamps with the membrane electrode components on a flat plate molding machine, heat at 240°C for 5 minut...

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Abstract

The invention provides a fixture used for moulding of a proton exchange membrane fuel cell membrane electrode and a preparation method for the proton exchange membrane fuel cell membrane electrode. The preparation method comprises the following steps: membrane electrode components are placed between a first flat plate and second flat plate of the fixture in sequence; torque of a lead screw of the fixture is set as 0.5 Nm to 5Nm and a fastening lead screw abuts against the second flat plate through a screw hole in the first flat plate; and the fixture is heated at a temperature from 140 DEG C to 250 DEG C for 2 min to 30 min so that the proton exchange membrane fuel cell membrane electrode is obtained. According to the fixture used for moulding of the proton exchange membrane fuel cell membrane electrode and the preparation method for the proton exchange membrane fuel cell membrane electrode, the fixture is formed by the first flat plate and the second flat plate and the like and a mould pressing method for preparation of the membrane electrode is regulated, so that the discharging performance of the membrane electrode is good and electrochemical performance of a fuel cell can be improved. The preparation method for the proton exchange membrane fuel cell membrane electrode is simple and easy to operate, low in cost due to the fact that expensive mould pressing equipment is not needed and beneficial to popularization.

Description

technical field [0001] The invention relates to the field of fuel cells, in particular to a fixture for forming a membrane electrode of a proton exchange membrane fuel cell and a method for preparing the membrane electrode of a proton exchange membrane fuel cell. Background technique [0002] A fuel cell is a power generation device that converts chemical energy directly into electrical energy through an electrochemical reaction. Compared with traditional energy conversion systems, fuel cells have many advantages: for example, they are not limited by the Carnot cycle, and the energy conversion efficiency is high; the product is usually water, which has little environmental pollution. Therefore, fuel cells have received increasing attention in recent years. [0003] Among fuel cells, a proton exchange membrane fuel cell is a device that uses fuels such as methanol, hydrogen, and formic acid to generate electricity through a membrane electrode composed of an ion exchange memb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25B11/00H01M4/88
CPCY02E60/50
Inventor 邢巍廖建辉张弘严亮李晨阳司凤占
Owner CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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