Ionic POSS-containing block copolymer composite proton exchange membrane and preparation method thereof

A technology of block copolymer and proton exchange membrane, which is applied in the field of ionic POSS-containing block copolymer composite proton exchange membrane and its preparation, can solve the problems of low proton conductivity, easy swelling, dimensional instability, etc. The method is simple, time-consuming, and the effect of improving proton conductivity

Inactive Publication Date: 2018-12-18
RES & DEV INST OF NORTHWESTERN POLYTECHNICAL UNIV IN SHENZHEN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to avoid the deficiencies of the prior art, the present invention proposes a composite proton exchange membrane containing POSS block copolymer and its preparation method to solve the dimensional instability or low humidity caused by the easy swelling of commercial proton exchange membranes at high temperatures. The disadvantage of low proton conductivity

Method used

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  • Ionic POSS-containing block copolymer composite proton exchange membrane and preparation method thereof
  • Ionic POSS-containing block copolymer composite proton exchange membrane and preparation method thereof
  • Ionic POSS-containing block copolymer composite proton exchange membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] (1) Spread a 50% sulfonated polysulfone solution dissolved in N,N-dimethylformamide with a concentration of 0.3g / mL on a glass plate, and then put it into the toluene solution and let it stand until After 30 minutes, the membrane on the glass plate turns white completely, and a porous 50% sulfonated polysulfone matrix membrane is obtained;

[0057] (2) Immediately after the porous membrane on the glass plate in step (1) is immersed in a concentration of 0.05g / mL toluene dissolved block ratio: PMMA: POSS-(PMMA-PS) of PS=1:7 8 Block ratio: PMMA:PS=1:7 solution, let it stand for about 10min;

[0058] (3) Put the composite porous membrane obtained in step (2) into an oven at 80° C. for 10-12 hours to dry, and then peel off the membrane on the glass plate to obtain a composite proton exchange membrane.

[0059] The performance test comparative data of table 1 embodiment 1 and comparative example 1

[0060]

Embodiment 2

[0062] (1) Spread 60% sulfonated polysulfone solution dissolved in N,N-dimethylformamide with a concentration of 0.3g / mL on a glass plate, and then put it in toluene solution and let it stand for 25min Until the membrane on the glass plate turns white completely, a porous 60% sulfonated polysulfone matrix membrane is obtained;

[0063] (2) Immediately afterwards, immerse the porous membrane on the glass plate in step (1) with a concentration of 0.05g / mL in the POSS-PMMA-PS solution dissolved in toluene, and let it stand for about 15min;

[0064] (3) Put the composite porous membrane obtained in step (2) into an oven at 80° C. for 10-12 hours to dry, and then peel off the membrane on the glass plate to obtain a composite proton exchange membrane.

Embodiment 3

[0066] (1) Spread a 50% sulfonated polysulfone solution with a concentration of 0.3 g / mL dissolved in a mixed solvent of N,N-dimethylformamide and toluene (volume ratio 9 / 1) on a glass plate Then put it into the toluene solution and let it stand for 30min until the membrane on the glass plate turns white completely to obtain a porous 50% sulfonated polysulfone matrix membrane;

[0067] (2) Immediately afterwards, the porous membrane on the glass plate in step (1) is immersed in toluene to dissolve the concentration of 0.05g / mL block ratio: PMMA:PS=1:4 POSS-(PMMA-PS) 8 In the solution, let it stand for about 10 minutes;

[0068] (3) Put the composite porous membrane obtained in step (2) into an oven at 80° C. for 10-12 hours to dry, and then peel off the membrane on the glass plate to obtain a composite proton exchange membrane.

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Abstract

The invention relates to an ionic composite proton exchange membrane containing POSS block copolymer and a preparation method thereof, which is characterized in that the the membrane comprises components of 70-99wt% polymer matrix and 1-30wt% ionic POSS-containing block copolymer; through phase separation method for making holes, dipping, multilayer scratching or dissolving and fusion mixing, thePOSS block copolymer is used as a function coating or blended phase to be composite with multiple kinds of commercial proton exchange membranes to prepare various kinds of ionic POSS-containing blockcopolymer composite proton exchange membranes with different micro structures. This method effectively solves the problem of size instability or low proton conductivity caused by the swelling of commercial proton exchange membranes at high temperature. The preparation method has the advantages of strong universality, good structure control, convenient operation and high efficiency.

Description

technical field [0001] The invention belongs to the technical field of functional polymer membranes, and relates to an ion-type POSS-containing block copolymer composite proton exchange membrane and a preparation method thereof. Background technique [0002] Due to energy shortage and environmental pollution, seeking green and environmentally friendly renewable energy has become one of the main tasks of contemporary human beings. A fuel cell is a power generation device that directly converts the chemical energy in fuel and oxidant into electrical energy. Compared with traditional fuels, fuel cells do not undergo a combustion process, and have high energy conversion rates and less environmental pollution. Therefore, fuel cells have broad application prospects. [0003] The core component of the proton exchange membrane fuel cell (PEMFC) is the proton exchange membrane (PEM), which plays the role of isolating the poles and conducting protons, directly affecting the performan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/1039H01M8/1044H01M8/1069
CPCH01M8/1039H01M8/1044H01M8/1069H01M2008/1095Y02E60/50Y02P70/50
Inventor 陈芳蔡蓉林锋陈闯马晓燕
Owner RES & DEV INST OF NORTHWESTERN POLYTECHNICAL UNIV IN SHENZHEN
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