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A high oxygen transport fuel cell catalytic layer and a membrane electrode assembly and a fuel cell

A membrane electrode assembly and fuel cell technology, applied in the direction of fuel cells, battery electrodes, electrical components, etc., can solve the problems of being unsuitable for the commercial application of fuel cells and cumbersome preparation process, and achieve commercial application, simple preparation method, The effect of improving performance

Active Publication Date: 2018-12-28
武汉理工新能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the prepared catalyst has the effect of optimizing the oxygen transport of low-Pt membrane electrodes, the preparation process is relatively cumbersome and is not suitable for commercial application of fuel cells

Method used

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  • A high oxygen transport fuel cell catalytic layer and a membrane electrode assembly and a fuel cell
  • A high oxygen transport fuel cell catalytic layer and a membrane electrode assembly and a fuel cell
  • A high oxygen transport fuel cell catalytic layer and a membrane electrode assembly and a fuel cell

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Embodiment 1

[0030] The present embodiment provides a high oxygen transport fuel cell catalytic layer, the high oxygen transport fuel cell catalytic layer comprises carbon-supported Pt particles and a polymer film on the surface of the Pt particle, the polymer film is perfluorosulfonic acid resin and cationic polymerization bound membranes (such as figure 2 (2) in). figure 2 (1) in means that there is no cationic polymer.

[0031] This embodiment also provides a method for preparing the catalytic layer of the high oxygen transport fuel cell, comprising the following steps:

[0032] 1) Prepare the mixed solution of cationic polymer polydiallyl dimethyl ammonium chloride (PDDA) solution and perfluorosulfonic acid resin, wherein the mole of sulfonate radical in cationic polymer and perfluorosulfonic acid resin The ratio is 1:30;

[0033] The specific configuration method of the above mixed solution is as follows: the mixed solution is prepared according to the mass ratio of PDDA solution...

Embodiment 2

[0041] This example is roughly the same as Example 1, except that the molar ratio of the positive ions in the cationic polymer to the sulfonate groups in the perfluorosulfonic acid resin is 1:60. Test results such as Figure 5 and Image 6 shown.

Embodiment 3

[0043] This example is roughly the same as Example 1, except that the molar ratio of the positive ions in the cationic polymer to the sulfonate groups in the perfluorosulfonic acid resin is 1:90. Test results such as Figure 5 and Image 6 shown.

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Abstract

The invention relates to a high oxygen transport fuel cell catalytic layer and a membrane electrode assembly and a fuel cell. The high oxygen transport fuel cell catalyst layer comprises carbon-supported Pt particles and a polymer film on the surface of the Pt particles. The polymer film is a membrane of perfluorosulfonic acid resin combined with a cationic polymer. The membrane electrode assemblycomprises a catalyst coated membrane, wherein the catalyst coated membrane comprises a proton exchange membrane and cathode and anode catalytic layers on both sides of the proton exchange membrane, wherein the cathode catalytic layer is the high oxygen transport fuel cell catalytic layer. The preparation method of the catalyst layer is relatively simple, and has good oxygen transport ability, andhas excellent performance for low platinum film electrode at high current density.

Description

technical field [0001] The invention relates to a catalytic layer of a high-oxygen transmission fuel cell, a membrane electrode assembly and a fuel cell, and belongs to the technical field of fuel cells. Background technique [0002] Proton exchange membrane fuel cell (PEMFC) is considered to be an ideal new energy technology due to its high energy conversion efficiency and low environmental pollution, so it has attracted extensive attention from governments and research fields. At present, the commonly used catalyst for fuel cells is Pt. However, the reserve of Pt resources is very limited, which leads to its high price, which is one of the key problems limiting the commercialization of fuel cells. Among them, reducing the amount of Pt used in fuel cells is an effective way to solve this problem. [0003] The addition of perfluorosulfonic acid resin in the catalytic layer plays an important role in the transfer of protons. However, the sulfonate groups in the perfluorosulf...

Claims

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Application Information

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IPC IPC(8): H01M4/92H01M4/88H01M8/1004
CPCH01M4/8828H01M4/926H01M8/1004Y02E60/50
Inventor 潘牧刘素芬宛朝辉钟青
Owner 武汉理工新能源有限公司
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