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A method for water management in alkaline anion exchange membrane fuel cells

A fuel cell water and alkaline anion technology, applied in the direction of fuel cells, fuel cell additives, solid electrolyte fuel cells, etc., can solve the problems of few improvement measures, improve output performance, prolong constant current operation time, and improve discharge Effect

Active Publication Date: 2020-09-29
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

Therefore, there are many descriptions of AAEMFC water management issues in the current literature reports, but few specific improvement measures

Method used

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  • A method for water management in alkaline anion exchange membrane fuel cells
  • A method for water management in alkaline anion exchange membrane fuel cells
  • A method for water management in alkaline anion exchange membrane fuel cells

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Select the self-made membrane electrode in the group, which uses the self-made AEH9620 membrane as the basic membrane, the ionomer is the self-made QTMA-30 resin, the catalyst is commercial Pt / C, and the catalyst loading capacity is 0.5mg Pt / cm 2 , the diffusion layer is carbon paper containing 5% PTFE with a microporous layer, and the effective area of ​​the electrode is 5cm 2 .

[0028] The operating conditions of the battery are as follows:

[0029] The anode inlet pressure is 0.2MPa, the hydrogen flow rate is 100ml / min, and the humidification temperature is 50°C; the cathode inlet pressure is 0.2MPa, the oxygen flow rate is 200ml / min, the humidification temperature is 50°C, and the battery operating temperature is 50°C.

[0030] The battery load current is 100mAcm -2 , when the battery runs for 15 minutes, adjust the opening of the gas exhaust valve, reduce the pressure in the battery gas chamber from 0.2MPa to 0 (gauge pressure), and maintain it for 5 minutes. Af...

Embodiment 2

[0032] Select the self-made membrane electrode in the group, which uses the self-made AEH9620 membrane as the basic membrane, the ionomer is the self-made QTEA-58 resin, the catalyst is commercial Pt / C, and the catalyst loading capacity is 0.1mg Pt / cm 2 , the diffusion layer is carbon paper containing 5% PTFE with a microporous layer, and the effective area of ​​the electrode is 5cm 2 .

[0033] The operating conditions of the battery are as follows:

[0034] The anode inlet pressure is 0.2MPa, the hydrogen flow rate is 100ml / min, and the humidification temperature is 50°C; the cathode inlet pressure is 0.2MPa, the oxygen flow rate is 200ml / min, the humidification temperature is 50°C, and the battery operating temperature is 50°C.

[0035] After testing the polarization curve at 50°C, raise the operating temperature of the battery to 60°C and maintain it at this temperature for 10 minutes. After the liquid water inside the battery is discharged, test the polarization curve of...

Embodiment 3

[0037] Select the self-made membrane electrode in the group, which uses the self-made AEH9620 membrane as the basic membrane, the ionomer is the self-made QTMA-30 resin, the catalyst is commercial Pt / C, and the catalyst loading capacity is 0.5mg Pt / cm 2 , the diffusion layer is carbon paper containing 5% PTFE with a microporous layer, and the effective area of ​​the electrode is 5cm 2 .

[0038] The operating conditions of the battery are as follows:

[0039] The anode inlet pressure is 0.2MPa, the hydrogen flow rate is 100ml / min, and the humidification temperature is 50°C; the cathode inlet pressure is 0.2MPa, the oxygen flow rate is 200ml / min, the humidification temperature is 50°C, and the battery operating temperature is 50°C.

[0040] Take the decompression water management operation in Example 1 and apply it to the battery at 100mAcm -2 In the stability test under the same conditions, the running time of the battery with and without water management was compared. Under...

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Abstract

The present invention relates to a method for water management of an alkaline anion exchange membrane fuel cell. The vaporization conditions of the fuel cell are conducive to the discharge of the water generated inside the fuel cell, and the output performance of the cell is improved. With this method of water management, the battery performance is significantly improved under the same conditions.

Description

technical field [0001] The invention belongs to the field of fuel cells, in particular to a water management method for an alkaline anion exchange membrane fuel cell. Background technique [0002] Fuel cell is a power generation device that directly converts the chemical energy of fuel into electrical energy. It has the advantages of high efficiency, low noise, and no pollution, and is widely favored by governments and enterprises in various countries. In recent years, low-temperature polymer electrolyte fuel cells have developed rapidly, especially proton exchange membrane fuel cells have been gradually commercialized. As another important representative of polymer electrolyte fuel cells - alkaline anion exchange membrane fuel cell (AAEMFC), because it has both the advantages of traditional alkaline fuel cells and proton exchange membrane fuel cells, while overcoming the proton exchange membrane fuel cell The battery's reliance on noble metal catalysts solves the problems ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/10H01M8/04H01M8/04746H01M8/04701H01M8/04291
CPCH01M8/04H01M8/04291H01M8/04701H01M8/04746H01M8/10Y02E60/50
Inventor 俞红梅高学强贾佳覃博文姚德伟邵志刚
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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