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Novel ordering membrane electrode and preparation method and application thereof

A membrane electrode, electrodeposition technology, applied in battery electrodes, circuits, fuel cells, etc., can solve the problems of low overall performance and little practicality, achieve low catalyst loading, increase effective utilization area, fuel penetration low rate effect

Active Publication Date: 2013-01-16
孙公权
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method reported in the literature usually uses direct self-assembly on the surface of the Nafion membrane, and the Pt loading per square centimeter is only about 5 micrograms. Although the assembled single cell has a high specific mass activity, its overall performance is low, and there is no obvious problem. great practicality

Method used

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  • Novel ordering membrane electrode and preparation method and application thereof
  • Novel ordering membrane electrode and preparation method and application thereof
  • Novel ordering membrane electrode and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] 1) Preparation of composite electrolyte membrane:

[0057] Will Membrane at 3wt.%H 2 o 2 solution, treated in a water bath at 80°C for 1 hour, rinsed with deionized water and placed in In the activation solution for 5min, take it out and rinse it with deionized water, then place it in After 5 minutes in the sensitization solution, take out the deionized water to rinse, and repeat the above steps 6 times. The surface prepared with highly active Pd core After filming, attach it to the surface of a piece of ABS plastic, and then cover it with an ABS plastic frame with a hollow in the middle, and the other side of the ABS plastic also covers a plastic frame with a closed bottom, and seal the two ABS plastics with PTFE waterproof material. space around the frame. Place the above device in the In the electroless plating solution, after 30 minutes, A uniform and firm metal Pd film is formed on the surface of the film, and the waterproof material is removed and th...

Embodiment 2

[0067] 1) Preparation of composite electrolyte membrane:

[0068] Will Membrane at 3wt.%H 2 o 2 solution, treated in a water bath at 80°C for 1 hour, rinsed with deionized water and placed in In the activation solution for 5min, take it out and rinse it with deionized water, then place it in After 5 minutes in the sensitization solution, take out the deionized water to rinse, and repeat the above steps 6 times. The surface prepared with highly active Pd core After filming, attach it to the surface of a piece of ABS plastic, and then cover it with an ABS plastic frame with a hollow in the middle, and the other side of the ABS plastic also covers a plastic frame with a closed bottom, and seal the two ABS plastics with PTFE waterproof material. space around the frame. Place the above device in the In the electroless plating solution, after 30 minutes, A uniform and firm metal Pd film is formed on the surface of the film, and the waterproof material is removed and th...

Embodiment 3

[0077] 1) Preparation of composite electrolyte membrane:

[0078] Will Membrane at 3wt.%H 2 o 2 solution, treated in a water bath at 80°C for 1 hour, rinsed with deionized water and placed in In the activation solution for 5min, take it out and rinse it with deionized water, then place it in After 5 minutes in the sensitization solution, take out the deionized water to rinse, and repeat the above steps 6 times. The surface prepared with highly active Pd core After filming, attach it to the surface of a piece of ABS plastic, and then cover it with an ABS plastic frame with a hollow in the middle, and the other side of the ABS plastic also covers a plastic frame with a closed bottom, and seal the two ABS plastics with PTFE waterproof material. space around the frame. Place the above device in the In the electroless plating solution, after 30 minutes, A uniform and firm metal Pd film is formed on the surface of the film, and the waterproof material is removed and th...

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Abstract

The invention relates to a novel ordering membrane electrode and a preparation method and application thereof. The membrane electrode consists of a composite electrolyte membrane and a catalyst layer. The composite electrolyte membrane is a proton exchange membrane modified by Pd metal or Pd-Cu alloy or Pd-Ag alloy or Pd-Ni alloy or Pd-Ag-Ni alloy, the catalyst layer is an ordering catalyst layer which comprises a composite electrolyte membrane metal layer consists of conducting polymer nanowires distributed on the surface in an ordering array mode and Nafion self-assembled Pt-PDDA catalyst adhered to the surfaces of the conducting polymer nanowires. The novel ordering membrane electrode has the advantages of being low in Pt bearing capacity, high in utilization rate and the like and can effectively reduce the cost of a fuel-cell catalyst. In addition, the novel ordering membrane electrode can enhance mass transfer of fuel in the catalyst layer while effectively reducing liquid fuel penetration and accordingly improves the fuel utilization rate.

Description

technical field [0001] The invention relates to a novel ordered membrane electrode, in particular to a membrane electrode which can be used in proton exchange membrane fuel cell, direct liquid fuel cell and proton exchange membrane type water electrolysis cell. [0002] The present invention also relates to a method for preparing the above-mentioned novel ordered membrane electrode. Background technique [0003] Due to its high efficiency and environmental friendliness, proton exchange membrane fuel cells have been paid close attention to by research institutions in various countries in recent years. Membrane electrode (MEA), as the core component of fuel cell, usually consists of gas diffusion layer, catalytic layer and proton exchange membrane. The catalytic layer is the place where the electrochemical reaction occurs in the membrane electrode assembly (MEA). The performance of the catalytic layer largely determines the electrochemical performance of the MEA. At the same ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/02H01M4/86H01M4/88H01M8/1004H01M8/1041
CPCY02E60/50
Inventor 孙公权
Owner 孙公权
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