Fuel cell electrode with catalyst growing on ordered structure microporous layer in situ and preparation method of membrane electrode

A fuel cell electrode, ordered structure technology, applied in the direction of fuel cells, battery electrodes, structural parts, etc., can solve the problems of increasing the transport resistance of membrane electrodes, affecting the performance and durability of the battery, agglomeration or falling off of Pt catalysts, etc. The effect of increasing the electrochemical reaction area, reducing the material transport resistance, and increasing the electrochemical reaction rate
CN112331858AActive Publication Date: 2021-02-05JIANGSU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGSU UNIV
Publication Date
2021-02-05

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Abstract

The invention discloses a fuel cell electrode with a catalyst growing on an ordered structure microporous layer in situ and a preparation method of a membrane electrode, and relates to the field of fuel cells. The fuel cell electrode comprises an electrode substrate layer, a hydrophobic layer, an ordered structure hydrophilic layer and a catalyst, wherein a hydrophobic layer is prepared on the electrode substrate layer, a hydrophilic layer with an ordered structure is prepared on the hydrophobic layer, and catalysts are uniformly distributed on the hydrophilic layer with the ordered structure.According to the invention, the platinum-based catalyst directly grows on the hydrophilic layer with the ordered structure in situ, so that the catalyst shows different morphologies such as nanoparticles, nanowires, nanorods and nano dendrites on the microporous layer, the electrochemical active surface area and catalytic activity are increased, the transmission resistance between the microporouslayer and the catalytic layer is reduced, and the performance of the battery can be effectively improved; in addition, the catalysts with special morphologies such as nanowires, nanorods, nano dendrites and the like have excellent stability, so that the durability of the battery is effectively improved.
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Description

technical field

[0001] The invention relates to the field of fuel cells, in particular to a method for preparing a fuel cell electrode and a membrane electrode in which a catalyst grows in-situ on a microporous layer with an ordered structure. Background technique

[0002] Proton exchange membrane fuel cell (PEMFC) is a high-efficiency hydrogen energy conversion device, which can directly convert the chemical energy stored in hydrogen fuel and oxidant into electrical energy through electrochemical reaction. It is environmentally friendly, high specific energy, and low temperature. The characteristics of quick start and high smooth operation can be applied to many fields such as new energy vehicles, field mobile power supply and silent power supply. It is considered to be an ideal power source to replace the internal combustion engine, and has received extensive attention and research in recent years.

[0003] However, the current research and development of PEMFC still faces...

Claims

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