Oxygen ion exchange membrane and preparation method thereof and application of oxygen ion exchange membrane in fuel cell

A technology for exchanging membranes and oxygen ions, applied to battery electrodes, circuits, electrical components, etc., can solve the problems of long start-up time, high permeability, high working temperature, etc., and achieve low working temperature, low process cost and high mechanical properties Effect

Inactive Publication Date: 2018-08-10
CHENDU NEW KELI CHEM SCI CO LTD
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The most commonly used proton exchange membrane (PEMFC) so far is still the Nafion membrane of DuPont in the United States, but the Nafion membrane still has the following disadvantages: (1) It is difficult to manufacture and high in cost, and the synthesis and sulfonation of perfluorinated substances are very difficult. Moreover, the hydrolysis and sulfonation in the film-forming process will easily denature and degrade the polymer, making film-forming difficult and resulting in higher costs; (2) high requirements on temperature and water content, the best working temperature of Nafion series membranes is 70 ~90°C, if the temperature exceeds this temperature, the water content will drop sharply, and the con

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

Example Embodiment

[0035] Example 1

[0036] The oxygen ion exchange membrane is prepared by the following method:

[0037] a. Preparation of metal-based catalyst: mix metal salt and borate in a weight ratio of 3:1, and ball mill to obtain a metal-based catalyst with a particle size of less than 50 microns; wherein the metal salt is lead oleate; the boron The acid salt is sodium tetraborate.

[0038] b. Preparation of metastable phase: heat and melt the perfluoroorganic acid ester, then add the polymerization inhibitor and stabilizer, add the metal-based catalyst at a stirring speed of 200 rpm, and keep the speed for 20 hours, then change the stirring speed to 400 rpm Continue to stir the reaction for 30 hours to obtain a metastable phase; wherein, the weight ratio of perfluoroorganic acid ester, polymerization inhibitor, stabilizer and metal-based catalyst is 100:8:5:3; the perfluoroorganic acid ester is perfluoro Alkyl phosphate; polymerization inhibitor is hydroquinone; stabilizer is liquid phosph...

Example Embodiment

[0044] Example 2

[0045] The oxygen ion exchange membrane is prepared by the following method:

[0046] a. Preparation of metal-based catalyst: mix metal salt and borate at a weight ratio of 0.5:1, and ball mill to obtain a metal-based catalyst with a particle size of less than 50 microns; wherein the metal salt is ruthenium acetate; the boric acid The salt is zinc borate.

[0047] b. Preparation of metastable phase: heat and melt the perfluoroorganic acid ester, then add the polymerization inhibitor and stabilizer, add the metal-based catalyst at a stirring speed of 300 rpm, and keep the speed for stirring for 10 hours, and then change the stirring speed to 600 rpm Continue to stir the reaction for 20 hours to obtain a metastable phase; wherein the weight ratio of perfluoroorganic acid ester, polymerization inhibitor, stabilizer and metal-based catalyst is 100:3:1:0.5; the perfluoroorganic acid ester is perfluoro Alkyl acrylate; polymerization inhibitor is p-hydroxyanisole; stabi...

Example Embodiment

[0052] Example 3

[0053] The oxygen ion exchange membrane is prepared by the following method:

[0054] a. Preparation of metal-based catalyst: mix metal salt and borate at a weight ratio of 2.5:1, and ball mill to obtain a metal-based catalyst with a particle size of less than 50 microns; wherein, the metal salt is lead oleate and ruthecene , And the weight ratio of lead oleate and ruthecene is 1:1; the borate is manganese borate.

[0055] b. Preparation of metastable phase: heat and melt the perfluoroorganic acid ester, then add the polymerization inhibitor and stabilizer, add the metal-based catalyst at a stirring speed of 280 rpm, and keep the speed for 12 hours, then change the stirring speed to 500 rpm Continue to stir the reaction for 24 hours to obtain a metastable phase; wherein the weight ratio of perfluoroorganic acid ester, polymerization inhibitor, stabilizer and metal-based catalyst is 100:7:4:2; the perfluoroorganic acid ester is all Fluoroalkyl ethyl acrylate; poly...

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 sizeaaaaaaaaaa
Login to view more

Abstract

The invention relates to an oxygen ion exchange membrane and a preparation method thereof and an application of the oxygen ion exchange membrane in a fuel cell, belongs to the technical field of fuelcell membranes and aims at solving the first technical problem of providing the preparation method of the oxygen ion exchange membrane. According to the method, perfluorinated organic acid ester is utilized as a raw material and a metal organic phase is formed through compounding a metal salt and borate; two C-O-C bonds of an ester group are broken through the catalytic action of a metal matrix; apolymerization inhibitor and a stabilizer are added to inhibit crosslinking reaction; most of materials form a metastable phase which contains porous free oxygen and a carbon dangling bond; and the membrane is finally formed by the metastable phase through physical means. The invention provides a novel oxygen ion conduction mechanism. Transmission of oxygen ions in a membrane material is achievedthrough using an organic matter as an oxygen ion carrier, the working temperature of a low-oxygen ion electrolyte membrane can be greatly reduced and a new development direction is provided for preparation of the membrane material for the fuel cell.

Description

technical field [0001] The invention relates to an oxygen ion exchange membrane, a preparation method thereof and an application in fuel cells, and belongs to the technical field of fuel cell diaphragms. Background technique [0002] A fuel cell is a chemical device that directly converts the chemical energy of fuel into electrical energy, also known as an electrochemical generator. It is the fourth power generation technology after hydropower, thermal power and atomic power. Since the fuel cell converts the Gibbs free energy in the chemical energy of the fuel into electrical energy through an electrochemical reaction, it is not limited by the Carnot cycle effect, so the efficiency is high; Transmission parts, so there is no noise material, and the harmful gas emitted is very little; sound pollution. It can be seen that from the point of view of saving energy and protecting the ecological environment, fuel cells are the most promising power generation technology. [0003]...

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): H01M4/86H01M4/88
CPCH01M4/86H01M4/88Y02E60/50
Inventor 陈庆廖健淞
Owner CHENDU NEW KELI CHEM SCI CO LTD
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