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Performance improvement method and structure of direct alcohol fuel cell

A fuel cell, direct technology, applied in the direction of fuel cells, fuel cell additives, circuits, etc., can solve problems such as the inability to reduce the cost of DMFC, achieve good results, improve the starting voltage, and solve technical bottlenecks.

Inactive Publication Date: 2014-03-12
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the method of multi-component catalysis reduces the amount of Pt used and can improve the anode catalytic efficiency to a certain extent, it cannot reduce the cost of DMFC, because Ru is also a very expensive catalyst, and Ru is a rare metal compared with Pt.
In the cost of direct methanol fuel cells, the cost of catalysts accounts for more than 30%

Method used

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  • Performance improvement method and structure of direct alcohol fuel cell
  • Performance improvement method and structure of direct alcohol fuel cell
  • Performance improvement method and structure of direct alcohol fuel cell

Examples

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Embodiment Construction

[0023] refer to figure 1 The structure decomposition diagram of the direct alcohol fuel cell is shown, two fuel supply channels 2 are sandwiched between the MEA membrane 1, sealed by the sealing ring 3, packaged by the packaging shell 4, and the piezoelectric ceramic 5 is arranged on the separator of the fuel supply channel On and out of the electrode 6 to provide power.

[0024] The traditional direct alcohol fuel cell with the ultrasonic transducer set according to the above scheme, electrifying the ultrasonic transducer and generating ultrasonic vibration to the anode fuel supply channel, the transient performance and steady-state discharge performance of the battery are significantly improved.

[0025] The experience in the specific implementation process shows that the ultrasonic transducer is installed on the partition, sealing device or packaging shell of the anode fuel supply channel by means of adhesion, inlay or embedding, as long as the anode fuel supply channel can...

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Abstract

The invention belongs to the field of fuel cells, and discloses a performance improvement method and a structure of a direct alcohol fuel cell. According to the technical scheme adopted by the invention, the direct alcohol fuel cell comprises fuel supply channels, a mono-ethanolamine (MEA) film, a sealing device and a packaging shell, wherein the MEA film is clamped between the two fuel supply channels; the sealing device is used for sealing; finally, the packaging shell is used for packaging; an ultrasonic transducer is also arranged in the cell in an integral way. When the direct alcohol fuel cell is used, the ultrasonic transducer is started, and then ultrasound irradiation is carried out on the fuel in the anode fuel supply channel; the ultrasonic transducer comprises a piezoelectric ceramic piece and a lead-out electrode. The pressure gradient is formed along a certain direction in the fuel by the vibration generated by an ultrasonic device, and the gas generated in the anodic oxidation reaction of the fuel cell can be rapidly discharged, so that catalyst poisoning is relieved, and the transient performance of the fuel cell can be also improved.

Description

technical field [0001] The invention belongs to the field of fuel cells, and in particular relates to a method for improving the performance of a direct alcohol fuel cell and its structure. Background technique [0002] Fuel cells have the characteristics of low pollution, high efficiency, no charging, no noise, and a wide range of fuel sources. They have become one of the important roles in new energy sources. Proton exchange membrane fuel cells can also be started at extremely low temperatures (80°C). One feature has received widespread attention. Direct methanol fuel cell (hereinafter referred to as DMFC) is a variant of proton exchange membrane fuel cell, which can directly use methanol without prior reforming. Compared with other batteries, DMFC has the following characteristics: first, its theoretical energy density is extremely high, which is several times that of current lithium batteries; second, its extremely low operating temperature enables it to start normally ...

Claims

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Application Information

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IPC IPC(8): H01M8/04
CPCY02E60/50H01M8/0662H01M8/1011
Inventor 吴超群郭启亮洪才浩宋志翔陈涛
Owner WUHAN UNIV OF TECH
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