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Preparation method of membrane electrode with transition layer for basic anion-exchange membrane fuel battery

A basic anion and transition layer technology, applied in the direction of fuel cells, battery electrodes, circuits, etc., can solve the problems of catalysts falling off easily, achieve the promotion of OH- conduction, improve performance and stability, and expand the three-phase reaction interface Effect

Active Publication Date: 2015-03-18
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The membrane electrode will cause the catalyst to fall off easily due to the absence of a binder in the catalyst layer slurry.

Method used

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  • Preparation method of membrane electrode with transition layer for basic anion-exchange membrane fuel battery
  • Preparation method of membrane electrode with transition layer for basic anion-exchange membrane fuel battery
  • Preparation method of membrane electrode with transition layer for basic anion-exchange membrane fuel battery

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Experimental program
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Effect test

Embodiment 1

[0025] Described membrane electrode is made by following method:

[0026] Select A201 type alkaline anion exchange membrane from Tokuyama Company, Japan, 24cm 2 .

[0027] Take 0.035g of 5wt% AS-4 anion exchange resin produced by Tokuyama Corporation in Japan, add 0.78g of isopropanol, disperse for 40min by ultrasonic dispersion, and mix them evenly to obtain a mixed solution of anodic and anode transition layers.

[0028] Weigh 0.035g of a 70% Pt / C catalyst by weight, add 1.05g of isopropanol as a solvent, and disperse ultrasonically for 40 minutes, then add 0.10g of 5wt% AS-4 anion exchange resin, and disperse ultrasonically for 40 minutes to obtain a uniform catalyst slurry .

[0029] On a hot stage at 55°C, first spray the transition layer solution on both sides of the basic anion exchange membrane, and then spray the catalytic layer slurry on the surface of the basic anion exchange membrane with the transition layer. Cool to obtain a transition layer catalytic layer fi...

Embodiment 2

[0036] A201-CE basic anion exchange membrane from Tokuyama Company, Japan, with an area of ​​24cm 2 .

[0037] Take 0.04g of 5wt% AS-CEX anion exchange resin produced by Tokuyama Corporation in Japan, add 0.78g of isopropanol, and disperse for 40min by ultrasonic dispersion to make them evenly mixed to obtain a mixed solution of anodic and anode transition layers.

[0038] Weigh 0.035g of a 70% Pt / C catalyst by weight, add 1.05g of isopropanol as a solvent, and disperse ultrasonically for 40 minutes, then add 0.12g of 5wt% AS-CEX anion exchange resin, and disperse ultrasonically for 40 minutes to obtain a uniform catalyst slurry .

[0039] On a hot stage at 60°C, first spray the cathode and anode transition layer solution on both sides of the basic anion exchange membrane, and then spray the cathode and anode catalyst layer slurry on the surface of the alkaline anion exchange membrane with the cathode and anode transition layers, After the solvent is completely evaporated, i...

Embodiment 3

[0045] Self-crosslinked QAPS alkaline anion exchange membrane with an area of ​​24cm 2 .

[0046]Take 0.05g of a 5wt% AS-4 three-dimensional resin solution produced by Tokuyama Corporation in Japan, add 0.78g of isopropanol, and disperse for 40 minutes by ultrasonic dispersion to make it evenly mixed to obtain a mixed solution of an anode-cathode transition layer.

[0047] Weigh 0.035g of a 70% Pt / C catalyst by weight, add 1.05g of isopropanol as a solvent, and disperse ultrasonically for 40 minutes, then add 0.12g of 5wt% AS-4 anion exchange resin, and disperse ultrasonically for 40 minutes to obtain a uniform catalyst slurry .

[0048] On a hot stage at 70°C, first spray the cathode and anode transition layer solution on both sides of the basic anion exchange membrane, and then spray the cathode and anode catalyst layer slurry on the surface of the alkaline anion exchange membrane with the cathode and anode transition layers. After the solvent is completely evaporated, it ...

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Abstract

The invention relates to a basic anion-exchange membrane fuel battery, and particularly relates to a preparation method of a membrane electrode with a transition layer. The preparation method comprises the following steps: coating basic anion exchange resin between a basic anion-exchange membrane and a catalyst layer to serve as a transition layer, and then coating the transition layer with the catalyst layer consisting of a catalyst and the basic anion-exchange resin to form the membrane electrode with the transition layer, wherein the membrane electrode consists of the basic anion-exchange membrane, the transition layer and the catalyst layer; placing the membrane electrode between two gas diffusion layers to form a membrane electrode assembly, and preparing the membrane electrode with the transition layer. The membrane electrode with the transition layer, prepared by adopting the preparation method, aims at improving phase interface bonding strength of the catalyst layer and the basic anion exchange membrane, enlarging a three-phase reaction interface, promoting the conduction of OH<-> of a cathode catalyst layer, an anode catalyst layer and the basic anion-exchange membrane, improving the performance of the basic anion-exchange membrane fuel battery and the operation stability of the basic anion-exchange membrane fuel battery.

Description

technical field [0001] The invention relates to a preparation method of a membrane electrode with a transition layer for an alkaline anion exchange membrane fuel cell. The preparation method can obviously improve the performance of the battery and the discharge stability of the constant current continuous operation of the battery. Background technique [0002] Fuel cells are a new, clean and efficient energy source without pollution, which can directly convert the chemical energy of fuels and oxidants into electrical energy, and have broad application prospects in aerospace, military, electric vehicles, and regional power stations. Proton exchange membrane fuel cell (PEMFC) has the advantages of fast start-up, high efficiency and energy saving. Since the 1990s, it has received extensive attention from governments, energy, automobiles, home appliances and military industries, and its technology has developed rapidly. In recent years, it has been successfully applied in variou...

Claims

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Application Information

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IPC IPC(8): H01M4/88
CPCH01M4/8828H01M8/1004Y02E60/50
Inventor 俞红梅刘艳喜杨冬蕾邵志刚衣宝廉
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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