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

Composite filler and preparation method thereof, proton exchange membrane and preparation method thereof, and fuel cell

A proton exchange membrane and filler technology, applied in fuel cells, circuits, electrical components, etc., can solve the problems of tearing, easy to rupture, and unusable proton exchange membranes, to prevent rupture and tearing, and improve mechanical properties. , which is beneficial to the effect of proton transport

Active Publication Date: 2022-03-15
深圳氢时代新能源科技有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, fillers with strong water retention are usually oxides that are easy to form hydrogen-oxygen bonds, such as silicon dioxide, titanium dioxide, zirconium dioxide, etc. However, the strong covalent bonds of hydrogen-oxygen bonds limit dislocation slippage. Therefore, the plastic deformation is limited, and the problem of cracking and tearing is easy to occur, which makes the proton exchange membrane unusable

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 filler and preparation method thereof, proton exchange membrane and preparation method thereof, and fuel cell
  • Composite filler and preparation method thereof, proton exchange membrane and preparation method thereof, and fuel cell
  • Composite filler and preparation method thereof, proton exchange membrane and preparation method thereof, and fuel cell

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0035] The present invention also provides the preparation method of above-mentioned composite filler, comprises following process:

[0036] Step S1: Provide a solution of soluble magnesium salt, add PPCA to the solution of soluble magnesium salt to obtain a mixed solution, in the mixed solution, the molar ratio of magnesium ions in the soluble magnesium salt to PPCA is 4:1-6:1.

[0037]In this process, soluble magnesium salts are used as raw materials to generate MgO. Since magnesium ions are dissolved in the solution, the initial particle size of magnesium ions is small, so that the obtained MgO has a small particle size; adding PPCA, because PPCA contains carboxylic acid Group and amine group, can provide strong acid site, easy to water, and PPCA has a nitrogen coordination bond, can combine magnesium ions, improve the dispersion of magnesium ions, and further make the obtained MgO have a smaller particle size.

[0038] Preferably, the solution of the soluble magnesium salt...

Embodiment 1

[0053] Composite fillers of PPCA-MgO-MWCNT were prepared.

[0054] 1) Dissolve soluble magnesium salt in 100Ml deionized water, heat to 85°C, stir vigorously for 15 minutes, then add a certain amount of PPCA, Mg 2+ The molar ratio with PPCA is 5:1, NH 3 , until the Ph rose to 11, a black suspension was formed, and then vigorously stirred under an argon atmosphere, the suspension was refluxed at 100 °C for 6 h, after which, the composite solid of PPCA-MgO was separated from the aqueous solution by magnetic decantation .

[0055] 2) Purify MWCNT (density 30 μg / Ml, length 10 μm-40 μm, diameter 10 nm-40 nm), reflux MWCNT in nitric acid solution, wash to remove excess nitric acid, and obtain purified MWCNT.

[0056] 3) Disperse 14 g of purified MWCNT and 56 g of PPCA-MgO composite solid in an ethanol solution, heat at 80 °C for 2 h under reflux, and centrifuge to obtain a composite solid of PPCA-MgO-MWCNT, wash the composite solid of PPCA-MgO-MWCNT with distilled water until Ph ...

Embodiment 2

[0059] Composite fillers of PPCA-MgO-MWCNT were prepared.

[0060] 1) Dissolve soluble magnesium salt in 100Ml deionized water, heat to 85°C, stir vigorously for 15 minutes, then add a certain amount of PPCA, Mg 2+ The molar ratio with PPCA is 4:1, NH 3 , until the Ph rose to 11, a black suspension was formed, and then vigorously stirred under an argon atmosphere, the suspension was refluxed at 100 °C for 6 h, after which, the composite solid of PPCA-MgO was separated from the aqueous solution by magnetic decantation .

[0061] 2) Purify MWCNT (density 30 μg / Ml, length 10 μm-40 μm, diameter 10 nm-40 nm), reflux MWCNT in nitric acid solution, wash to remove excess nitric acid, and obtain purified MWCNT.

[0062] 3) Disperse 14 g of purified MWCNT and 56 g of PPCA-MgO composite solid in an ethanol solution, heat at 80 °C for 2 h under reflux, and centrifuge to obtain a composite solid of PPCA-MgO-MWCNT, wash the composite solid of PPCA-MgO-MWCNT with distilled water until Ph ...

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
particle diameteraaaaaaaaaa
diameteraaaaaaaaaa
lengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a composite filler and a preparation method thereof, a proton exchange membrane and a preparation method thereof, and a fuel cell, and the composite filler is used for being mixed into a polymer matrix of a proton exchange membrane, and is characterized in that it is made of MgO, CNT Formed by compounding with PPCA, the molar ratio of the MgO and the PPCA is 4:1-6:1, and the mass ratio of the total mass of the MgO and the PPCA to the CNT is 1:1-4:1. The incorporation of composite fillers into proton exchange membranes can improve the plastic deformation properties of the membranes, and at the same time have higher water retention at high temperatures.

Description

technical field [0001] The invention relates to the technical field of fuel cells, more specifically, to a composite filler and a preparation method thereof, a proton exchange membrane and a preparation method thereof, and a fuel cell. Background technique [0002] The dilemma faced by the proton exchange membrane is how to use it in a high-temperature working environment above 100°C, because the proton exchange of the proton exchange membrane is highly dependent on water molecules, and the water molecules will evaporate at high temperatures above 100°C, and the water content will increase rapidly. Reduced, the proton conductivity of the proton exchange membrane dropped sharply. [0003] One way to solve the above problems is to dope the polymer electrolyte membrane with fillers with strong water retention to resist the sharp decrease of water content at high temperature. [0004] In the prior art, fillers with strong water retention are usually oxides that are easy to form...

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
Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/1046H01M8/1081
CPCH01M8/1046H01M8/1081Y02E60/50
Inventor 马海庆瓦黑德·玛兹那尼王安闽姚文东
Owner 深圳氢时代新能源科技有限公司