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Self-breathing type negative structure of alcohol fuel battery

A fuel cell, self-breathing technology, applied to fuel cell parts, fuel cells, battery electrodes, etc., can solve the problem of blocking the self-breathing channel of the cathode plate, improve corrosion resistance, good bonding force, and avoid blockage Effect

Active Publication Date: 2014-05-28
INFORMATION SCI RES INST OF CETC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a self-breathing cathode structure of an alcohol fuel cell, which enhances the drainage capacity of the cathode plate and solves the problem of blocking the self-breathing channel of the cathode plate due to liquid water

Method used

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  • Self-breathing type negative structure of alcohol fuel battery
  • Self-breathing type negative structure of alcohol fuel battery
  • Self-breathing type negative structure of alcohol fuel battery

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Experimental program
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specific Embodiment approach 1

[0018] Specific implementation mode 1: In this implementation mode, aluminum alloy is used for such figure 2 with image 3 For the production of the cathode plate shown, after degreasing treatment with alcohol or acetone, put it into the working solution containing sodium silicate (5-15g / mL) and sodium hypophosphite (0.5-2g / mL) , and use it as the positive pole, use the working tank as the negative pole, control the temperature of the working fluid below 50 degrees, in the bidirectional pulse power supply, the positive pulse voltage is 400-600V, the negative pulse voltage is 0-300V, and the pulse frequency is 10- Treat for 10-120 minutes under the condition of 5000Hz; rinse the cathode plate treated by micro-arc oxidation with tap water, and then polish off the micro-arc oxidation ceramic film on the part of the surface that is in contact with the membrane electrode, and use magnetron sputtering or electroplating A gold layer is deposited on the surface of this part by means...

specific Embodiment approach 2

[0020] Specific embodiment two: The difference between this embodiment and specific embodiment one is that the electrolyte used in the micro-arc oxidation treatment of the cathode plate is 5-15g / mL sodium aluminate and 0.5-2g / mL hypophosphorous acid sodium.

specific Embodiment approach 3

[0021] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the power source used in the micro-arc oxidation treatment of the cathode plate is a DC power source, and the processing voltage is 300-600V.

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Abstract

The invention provides a self-breathing type negative structure of an alcohol fuel battery for solving the problem that a self-breathing channel of a negative plate is blocked due to flooding. The negative plate of the alcohol fuel battery is made of an aluminum alloy material, a self-breathing through hole is formed in the negative plate, a thin gold layer covers a contact part between the surface of the negative plate and a membrane electrode, and an oxide ceramic membrane with super-hydrophilicity is prepared at a part in contact with air by the micro-arc oxidation technology. The self-breathing type negative structure of the alcohol fuel battery solves the problem that the self-breathing channel is blocked due to blooding of the negative, can improve the oxygen gas transferring effect, and further improve the output performance of the alcohol fuel battery.

Description

technical field [0001] The invention belongs to the field of proton exchange membrane fuel cells, and in particular relates to the design of a self-breathing cathode structure of an alcohol fuel cell. Background technique [0002] Direct Methanol Fuel Cell (DMFC) uses methanol, ethanol, dimethyl ether, etc. as fuel. It has the advantages of simple structure, high conversion efficiency, and low-temperature start-up, and has a good application prospect in the field of micro-portable products. . Especially the self-breathing alcohol fuel cell, due to the cancellation of active auxiliary devices, has a compact structure, so it is more suitable for portable and micro-miniature equipment applications with low power requirements (<10W). In practical applications, the cathode plate of the self-breathing direct alcohol fuel cell not only plays the role of collecting cathode current, but also serves as a transmission channel for cathode oxygen and water. Oxygen in the air diffuse...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/86H01M8/02H01M8/0282
CPCH01M4/8621H01M8/0232Y02E60/50Y02P70/50
Inventor 刘晓为袁玮健张雪林张宇峰王志刚
Owner INFORMATION SCI RES INST OF CETC