Proton exchanging film with inverse gas filter layer and humidification function and method for producing the same

A technology of proton exchange membrane and gas permeation membrane, which is applied in the field of proton exchange membrane with reverse gas permeation layer and humidification function and its preparation field, can solve the problems of increasing proton migration resistance of proton exchange membrane and the like

Inactive Publication Date: 2008-08-20
WUHAN UNIV OF TECH
View PDF4 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the use of a three-layer porous polymer reinforced composite proton exchange membrane, this method will increase the proton migration resistance of the proton exchange membrane to a certain extent.

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Preparation of reverse osmosis membrane layer based on porous perfluorosulfonic acid membrane:

[0028] 1. Disperse 1 milliliter of 5wt% perfluorosulfonic acid resin solution (Nafion ® solution, produced by DuPont), 5 grams of Pt / C (10wt%) catalyst in 100 milliliters of 10% isopropanol aqueous solution, under vacuum condition Stir at high speed (10,000 rpm) for 10 minutes to prepare catalyst slurry;

[0029] 2. Preparation of perfluorosulfonic acid porous membrane: 400 milliliters of perfluorosulfonic acid resin solution (solvent is 30% ethanol, 70% isopropanol) with a concentration of 5% is poured into length, width and height respectively 10cm, 10cm , 5cm glass container, and then vacuum-dried at 80°C for 18 hours to obtain a cast film; lift the cast film from the glass surface and hot press at a temperature of 120±10°C and a pressure of 2MPa. Cut the hot-pressed film into strips with a width of 5cm, then stretch the wide strip longitudinally at a temperature of 120-...

Embodiment 2

[0035] Based on porous perfluorosulfonic acid membrane and treated with TiO 2 Preparation of nanoparticle-doped reverse osmosis membrane:

[0036] 1. With 1 milliliter of 5wt% perfluorosulfonic acid resin solution (Nafion ® solution, produced by DuPont), 1 gram of TiO 2 and 0.5 gram of unsupported nanometer Pt black (10wt%) catalysts were successively added into 50-100 milliliters of 10% isopropanol aqueous solution, and stirred at high speed (10,000 revolutions per minute) for 15 minutes under vacuum conditions to obtain catalyst slurry.

[0037] 2. Preparation of perfluorosulfonic acid porous membrane: 400 milliliters of perfluorosulfonic acid resin solution (solvent is 30% ethanol, 70% isopropanol) with a concentration of 5% is poured into length, width and height respectively 10cm, 10cm , 5cm glass container, and then vacuum-dried at a temperature of 80-90°C for 12-18 hours to obtain a cast film; lift the cast film from the glass surface and hot press, the hot pressing te...

Embodiment 3

[0042] Preparation of reverse osmosis membrane based on porous perfluorosulfonic acid membrane and TiO 2 The nanoparticle doping method is the same as in Example 2.

[0043] Preparation of proton exchange membrane of the present invention

[0044] The reverse gas permeation membrane prepared above and the TiO prepared by Wuhan University of Technology 2 Nanoparticle porous polypropylene (PP)-based proton exchange membranes were cut into modules of the same size, and then pressed by TiO 2 Nanoparticle-doped porous PP matrix proton exchange membrane (film thickness 10μm), reverse gas permeation membrane (6μm), TiO 2 Nanoparticle-doped porous PP-based proton exchange membranes (film thickness 10 μm) are stacked neatly up and down, and a polytetrafluoroethylene film of the same size is placed on the bottom and top of the membrane respectively, and a five-in-one stack is obtained. ;The five-in-one stack is hot-pressed at a pressure of 3 MPa, a temperature of 160±10°C, and a hot-...

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
pore sizeaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to view more

Abstract

The present invention provides proton exchange membrane of fuel battery with anti gas permeation layer and humidifying function and producing method thereof. The proton exchange membrane is combined by a H2, O2 anti gas permeation membrane or layer in the middle of proton exchange membrane of porous polymer base, the anti permeation membrane or layer comprises of porous proton exchange membrane base and filler, wherein, the filler is catalyzer or inorganic nano granules or/and proton exchange resin. The producing method is: dispersing filler in solution to gain catalyzer slurry; dipping porous proton exchange membrane in catalyzer slurry to form porous proton exchange membrane of filler catalyzer; hot pressing to form gas permeation membrane or layer, and piled up from up to down with porous polymer basic proton exchange membrane in the turn of porous polymer basic proton exchange membrane- anti gas permeation membrane- porous polymer basic proton exchange membrane, on bottom and top of which polytetrafluoroethylene films with identical dimension are set on, after hot pressing, tearing off the polytetrafluoroethylene film to gain the products.

Description

technical field [0001] The invention relates to an enhanced proton exchange membrane for a fuel cell and a preparation method thereof. The proton exchange membrane has low gas permeability and strong humidification function, and is beneficial to improving the performance of the fuel cell. Background technique [0002] Proton Exchange Membrane (PEM) is one of the core components of PEMFC. The perfluorosulfonic acid proton exchange membrane (Nafion®) produced by DuPont is commonly used at present.  Membrane), the membrane has relatively good proton conductivity and long service life. However, the disadvantages of this membrane are long synthesis route, complex processing technology, high price, and easy swelling and deformation after absorbing water, and the mechanical strength decreases. Moreover, when used in a direct methanol fuel cell (DMFC), it has high methanol permeability, which greatly reduces the performance of the fuel cell. Polymer porous membranes, such as e-P...

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 Applications(China)
IPC IPC(8): H01M8/02H01M2/16C08J5/22H01M8/023
CPCY02E60/50
Inventor 木士春王晓恩潘牧
Owner WUHAN UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap