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Direct methanol fuel cell fuel-feeding method and structure thereof

A methanol fuel cell and fuel supply technology, applied in fuel cells, fuel cell additives, circuits, etc., can solve problems such as battery startup performance decline, and achieve the effects of alleviating catalyst poisoning, high battery performance, and improving energy density

Inactive Publication Date: 2015-02-18
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The steam supply method is to vaporize the methanol solution and participate in the electrochemical reaction after passing through the complex diffusion structure, which will lead to a decrease in the starting performance of the battery

Method used

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  • Direct methanol fuel cell fuel-feeding method and structure thereof
  • Direct methanol fuel cell fuel-feeding method and structure thereof
  • Direct methanol fuel cell fuel-feeding method and structure thereof

Examples

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Embodiment Construction

[0023] The following examples are further descriptions of the technical solutions of the present invention, not as limitations on the scope of protection.

[0024] Refer to attached figure 1 , the fuel channel 7 and the flow field channel 3 of the direct methanol fuel cell sandwich the MEA membrane 5, seal it through the sealing rings 4 and 6, package it through the packaging shell 1 and 9, seal it through the sealing rings 2 and 8, and seal the shell 1 and 9 are connected by bolts or other means. The ultrasonic vibration transducer is installed on the packaging shell by means of adhesion, inlay or embedding, so that it becomes a part of the fuel cell packaging shell. When working, it radiates ultrasonic waves to the fuel that is about to enter the anode fuel supply channel, so that it can be absorbed by a tiny liquid. The drops enter the supply channel. The fuel supplied by the vibration method enters the internal reaction of the battery in the form of tiny droplets, which ...

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PUM

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Abstract

The invention discloses a direct methanol fuel cell fuel-feeding method and a structure thereof. The structure comprises a fuel-feeding channel, an MEA membrane, an ultrasonic vibration transducer, a sealing device and an encapsulating housing, wherein the ultrasonic vibration transducer is arranged on the encapsulating housing by adopting manners of adhering, embedding or burying so as to become one part of the encapsulating housing of a fuel cell; when the cell is used, a vibration device is started to vibrate fuel to implement fuel atomizing supply. The direct methanol fuel cell fuel-feeding method has the advantage that the starting voltage, the transient performance and the stable performance of the fuel cell can be improved by only using mechanical vibration; meanwhile, the direct methanol fuel cell fuel-feeding method is a novel method capable of feeding the fuel to a current direct methanol fuel cell; the permeation of methanol can be effectively reduced, but the energy density of a system is not decreased.

Description

technical field [0001] The invention belongs to the field of fuel cells, and in particular relates to a fuel supply method and structure of a high energy density direct methanol fuel cell. Background technique [0002] Fuel cells have the characteristics of low pollution, high efficiency, no charging, no noise, and a wide range of fuel sources, which have become one of the important roles of new energy sources. received widespread attention. Direct methanol fuel cell (DMFC), a variant of proton exchange membrane fuel cell, can use methanol directly without prior reforming. Compared with other batteries, direct methanol fuel cells have 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 at room temperature; Third, fuel costs are low and storage is easy and convenient; fourth, it is small and light; fifth, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04H01M8/04186H01M8/1011
CPCH01M8/04201Y02E60/50
Inventor 吴超群宋志翔周奇唐凯刘晨阳万理
Owner WUHAN UNIV OF TECH
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