Unlock instant, AI-driven research and patent intelligence for your innovation.

Composite proton exchange membrane, preparation method thereof and fuel cell

A proton exchange membrane and proton exchange technology, applied in fuel cells, circuits, electrical components, etc., can solve the problems of large hydrogen permeation flux, short life, poor performance of membrane electrodes and fuel cells, etc.

Pending Publication Date: 2022-08-02
EVERGRANDE NEW ENERGY TECH SHENZHEN CO LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art, to provide a composite proton exchange membrane and its preparation method, to solve the problem that the existing proton exchange membrane has a large hydrogen permeation flux and the greater the hydrogen permeation flux as its thickness decreases. technical problem
[0007] Another object of the present invention is to provide a membrane electrode and a fuel cell containing the membrane electrode to solve the technical problems of poor performance and short service life of existing membrane electrodes and fuel cells under high temperature and low humidity conditions

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Composite proton exchange membrane, preparation method thereof and fuel cell
  • Composite proton exchange membrane, preparation method thereof and fuel cell
  • Composite proton exchange membrane, preparation method thereof and fuel cell

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0046] Correspondingly, based on the above composite proton exchange membrane, embodiments of the present invention also provide a method for preparing the composite proton exchange membrane. The process flow of the preparation method of the composite proton exchange membrane is as follows: figure 2 shown, including the following steps:

[0047] Step S01: Provide porous matrix membrane and proton exchange membrane

[0048] Step S02: forming graphene oxide and proton exchange membrane resin at least in the pores contained in the porous base membrane to form a reinforcing membrane;

[0049] Step S03 : laminating and combining the reinforcing membrane and the anode surface of the proton exchange membrane or the anode surface and the cathode surface respectively.

[0050] Wherein, the porous matrix membrane in step S01 is constituted as the porous matrix layer contained in the reinforcing layer 20 of the composite proton exchange membrane above or the porous matrix layer 23 ( ...

Embodiment A1

[0065] This embodiment provides a composite proton exchange membrane and a preparation method thereof.

[0066] The structure of the composite proton exchange membrane is as figure 1 As shown in (b), it includes a proton exchange base layer 10 and a reinforcement layer 20, wherein the reinforcement layer 20 includes a first reinforcement layer 21 and a second reinforcement layer 22, and the first reinforcement layer 21 is laminated and bonded to the anode surface 11 of the proton exchange base layer 10. Above, the second reinforcement layer 22 is laminated and bonded on the cathode surface 12 of the proton exchange base layer 10 . Wherein, the first reinforcement layer 21 and the second reinforcement layer 22 include a PTFE porous matrix layer (with a porosity of 70% and a pore size of 3 μm), and graphite oxide (carbon-to-oxygen ratio of 2:2) filled in the pores of the PTFE porous matrix layer. 1, with a size of 0.75 μm) and Nafion DC2020 proton exchange resin.

[0067] The ...

Embodiment A2- Embodiment A6

[0072] Embodiment A2 to embodiment A6 respectively provide a composite proton exchange membrane and a preparation method thereof.

[0073] The composite proton exchange membranes provided in Examples A2-A6 and their preparation process are basically the same as those in Example A1, except that the porosity of the porous matrix layer, that is, the reinforcing layer, is different, and the graphite oxide is replaced by graphene oxide. A2-Example A6 The porosity of the porous matrix layer, that is, the reinforcing layer in each example is shown in Table 2 below, respectively.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Lengthaaaaaaaaaa
Apertureaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a composite proton exchange membrane and a preparation method thereof, a membrane electrode and a fuel cell. The composite proton exchange membrane comprises a proton exchange membrane substrate, the proton exchange membrane substrate is provided with an anode surface and a cathode surface, the composite proton exchange membrane further comprises a reinforcing layer, and the reinforcing layer is laminated and combined on the anode surface or laminated and combined on the anode surface and the cathode surface at the same time. The enhancement layer comprises a porous matrix layer, and graphene oxide and proton exchange resin which are at least filled in pores contained in the porous matrix layer. The membrane electrode and the fuel cell both contain the composite proton exchange membrane. The composite proton exchange membrane disclosed by the invention has excellent water retention capacity, keeps relatively high proton conductivity under high-temperature and low-humidity conditions, is low in hydrogen permeability and hydrogen permeation rate, increases the open-circuit voltage of a galvanic pile, improves the durability of the galvanic pile, and is good in mechanical property. The membrane electrode and the fuel cell are stable in chemical performance, slow in attenuation speed and long in service life.

Description

technical field [0001] The application belongs to the technical field of fuel cells, and in particular relates to a composite proton exchange membrane, a preparation method thereof, and a fuel cell. Background technique [0002] A fuel cell is an electrochemical cell whose main principle is to directly convert the chemical energy in the fuel and oxidant into electrical energy through a redox reaction. As an important branch of the fuel cell field, proton exchange membrane fuel cell (PEMFC) not only has the general characteristics of fuel cell such as high energy conversion efficiency, zero emission, and environmental friendliness, but also has the advantages of fast start-up at room temperature, small size, no Electrolyte loss, easy drainage, long life, high specific power and specific energy, and low temperature operation. Therefore, it can be used as a power supply in mobile power supply fields such as automobiles, aerospace, and unmanned aerial vehicles, and can also be ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H01M8/1041H01M8/1069H01M8/1086H01M8/1004
CPCH01M8/1041H01M8/1069H01M8/1093H01M8/1004
Inventor 张超其他发明人请求不公开姓名
Owner EVERGRANDE NEW ENERGY TECH SHENZHEN CO LTD