Method for testing oxygen mass transfer resistance of ordered electrodes

A technology of mass transfer resistance and testing method, which is applied to circuits, fuel cells, electrical components, etc., and can solve problems such as high cost and insufficient service life
CN110320252AInactive Publication Date: 2019-10-11WUHAN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
WUHAN UNIV OF TECH
Publication Date
2019-10-11
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention relates to a method for testing oxygen mass transfer resistance of ordered electrodes. The method comprises the steps of firstly preparing ordered electrodes through magnetron sputtering; preparing a membrane electrode and then testing limited current density of the membrane electrode at different oxygen concentrations through optimizing test conditions; and calculating the oxygen mass transfer resistance according to the tested limited current density. According to the method, the internal oxygen mass transfer resistance of low-platinum ordered electrodes after being prepared into the membrane electrode (MEA) is successfully tested, and the method is of great significance for study on oxygen transfer of the low-platinum ordered electrodes and is especially suitable for testing of the oxygen mass transfer resistance of the low-platinum ordered electrodes in the field of proton exchange membrane fuel cells.
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Description

technical field

[0001] The invention relates to the technical field of fuel cells, in particular to a method for testing oxygen mass transfer resistance of ordered electrodes. Background technique

[0002] Proton exchange membrane fuel cells (PEMFC) have attracted much attention in recent years because of their low operating temperature, high power density, fast start-up, and fast response to load changes. However, this technology currently has some technical and economic problems that restrict its development, such as excessive use of noble metal catalysts resulting in high cost and insufficient service life. At present, there are a large number of literatures reporting the research on low-platinum ordered electrodes, the main purpose is to reduce the cost of proton exchange membrane fuel cells. Oxygen transfer is related to the resistance of oxygen to the surface of platinum, and this resistance is particularly prominent at low platinum, which has become one of the diffic...

Claims

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