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Fuel cell using diffusion layer as collector

A fuel cell and diffusion layer technology, applied in fuel cells, battery electrodes, circuits, etc., can solve the problems of reducing internal resistance, high cost, and increasing the optional range of component materials, and achieves the advantages of convenient operation, appropriate thickness, and cost reduction Effect

Inactive Publication Date: 2019-05-24
FAW JIEFANG AUTOMOTIVE CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the high cost problem caused by the above-mentioned shortcomings of the traditional fuel cell structure, the present invention provides a fuel cell with a diffusion layer as the collector electrode by changing the electron transfer circuit, shortening the running route of electrons, and reducing the internal resistance. At the same time, the optional range of component materials is greatly increased, and the cost of the overall battery is reduced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A commercially available platinum-carbon catalyst and a proton membrane with a thickness of 150 um were selected, and the membrane electrode was prepared by the CCM process and processed after molding for future use. During the preparation of the carbon paper matrix, fiber metal wires with a diameter of 0.04 mm such as image 3 The shown uniform ambush is laid to 1 / 2 thickness of the carbon paper, integrally formed, and then a microporous layer is prepared on one side of the carbon paper substrate. In order to prevent the soft wire electrode from piercing the proton membrane and causing a short circuit, a hard plastic film made of ABS material is hot-pressed along the outer edge of the proton membrane, and a 0.5mm thick gas introduction flow channel is made of molded phenolic resin powder. The repeating unit is sealed The ring is packaged into a short stack designed to be 1MPa, and the test result is a peak power of 1.2MPa. The cost is 40% lower than that of traditiona...

Embodiment 2

[0022] A commercially available platinum-carbon catalyst and a proton membrane with a thickness of 120 um were selected, and the membrane electrode was prepared by the CCM process and processed after molding for future use. During the preparation of the carbon paper matrix, fiber metal wires with a diameter of 0.04 mm such as image 3 The shown uniform ambush is laid to 1 / 3 of the thickness of the carbon paper, integrally formed, and then a microporous layer is prepared on one side of the carbon paper substrate. In order to prevent the soft wire electrode from piercing the proton membrane and causing a short circuit, a hard plastic film made of PVC is hot-pressed along the outer edge of the proton membrane, and a 0.8mm thick gas introduction flow channel is made of molded reinforced polypropylene hydrocarbon-filled composite resin, repeating the unit It is packaged into a short stack designed to be 1MPa with a sealing ring, and the test result is a peak power of 1.1MPa. The c...

Embodiment 3

[0024] A commercially available platinum-carbon catalyst and a proton membrane with a thickness of 180um were selected to prepare a membrane electrode by CCM technology, which was molded and processed for later use. During the preparation of the carbon paper matrix, fiber metal wires with a diameter of 0.04 mm such as image 3 The shown uniform ambush is laid to 1 / 3 of the thickness of the carbon paper, integrally formed, and then a microporous layer is prepared on one side of the carbon paper substrate. In order to prevent the soft wire electrode from piercing the proton membrane and causing a short circuit, a hard plastic film made of POM is hot-pressed along the outer edge of the proton membrane, and a 0.8mm thick gas introduction flow channel is made of molded reinforced polyurethane. The repeating unit is sealed The ring is packaged into a short stack designed to be 1MPa, and the test result is a peak power of 1.15MPa. The cost is 30% lower than that of traditional fuel ...

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Abstract

The invention discloses a fuel cell using a diffusion layer as a collector, which comprises a limited number of superimposed repetitive units. Each repetitive unit is composed of an anode plate, an H2diffusion layer embedded with a flexible wire electrode, an anode catalytic layer, a proton membrane, a cathode catalytic layer, an O2 diffusion layer embedded with a flexible wire electrode, and a cathode plate in turn. The electron transport of the fuel cell is outside the cell body, and the electrons are directly output to an external circuit from the flexible wire electrode embedded into theH2 diffusion layer 2, apply work to the external circuit and are returned through the flexible wire electrode embedded into the O2 diffusion layer. The operation route of electrons is shortened. The optional range of the component material is greatly increased while the internal resistance is reduced. The cost of the whole cell is reduced.

Description

technical field [0001] The invention relates to the field of new energy fuel cell structures, in particular to a low-cost and low-internal-resistance fuel cell using a diffusion layer as a collector. Background technique [0002] With the continuous improvement of environmental protection and energy saving and emission reduction requirements, the transformation of the driving force of motor vehicles from traditional energy to new energy will be the development direction for a long time in the future. One of the ten development directions in National Manufacturing 2025 includes the new energy development strategy. New energy includes clean alternative fuels, secondary energy storage batteries and fuel cell vehicles. Due to the limitation of theoretical energy density of secondary energy storage batteries, safety issues, the difficulty of greatly improving charging efficiency and life, and the difficulty of recycling, it will affect its large-scale application in vehicle power...

Claims

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Application Information

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IPC IPC(8): H01M8/0234H01M8/0245H01M4/86
CPCY02E60/50
Inventor 米新艳崔新然张克金曹婷婷王茁李军泽杨帅张苡铭于力娜
Owner FAW JIEFANG AUTOMOTIVE CO
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