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Preparation method of organic-MOF composite alkaline polymer electrolyte membrane and membrane

A technology of electrolyte membranes and polymers, applied in circuits, fuel cells, electrical components, etc., can solve the problems of performance degradation of alkaline membranes, and achieve the effects of optimizing the ratio of chloromethylation and good chemical stability

Inactive Publication Date: 2020-06-19
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the problem of performance degradation of alkaline membranes in high-temperature and low-humidity environments, the purpose of the present invention is to design and prepare a class of APEMs with strong water retention capacity, good chemical stability, and high conductivity, so that they can be used at >90°C or even higher temperatures Use; characterize and test the physicochemical, electrochemical properties of such APEMs

Method used

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  • Preparation method of organic-MOF composite alkaline polymer electrolyte membrane and membrane
  • Preparation method of organic-MOF composite alkaline polymer electrolyte membrane and membrane
  • Preparation method of organic-MOF composite alkaline polymer electrolyte membrane and membrane

Examples

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Effect test

Embodiment 1

[0036] Dissolve 4g SEBS in 100mL carbon tetrachloride, add 2mL SnCl 4 And 5mL1,4-dichloromethoxybutane, then warmed up to 60°C and maintained at this temperature with magnetic stirring for 8h. After the reaction solution returned to room temperature, it was poured into ethanol to precipitate a yellow solid, which was dissolved in tetrahydrofuran and then precipitated with ethanol. This process was repeated three times, and then fully washed with ethanol, and then the solid was vacuum-dried at room temperature for 8 hours to obtain CMSEBS.

[0037] Dissolve 1.5 g of the above-prepared CMSEBS in 20 mL of chloroform, then add 40 mL of tetrachloroethane, and stir at room temperature to obtain an orange-yellow transparent solution. At the same time, 0.3g ZIF-11 molecular sieve was ultrasonically dispersed in 30mL tetrachloroethane. Then the ZIF-11 / tetrachloroethane dispersion solution was slowly added dropwise to the solution of CMSEBS while stirring, and after the two were fully ...

Embodiment 2

[0050] Dissolve 4g of SEBS in 100mL of carbon tetrachloride, add in sequence in ice-water bath (7°C), 4mL of SnCl 4 And 8mL1,4-dichloromethoxybutane, then warmed up to 60°C and maintained at this temperature with magnetic stirring for 8h. After the reaction solution returned to room temperature, it was poured into ethanol to precipitate a yellow solid, which was dissolved in tetrahydrofuran and then precipitated with ethanol. This process was repeated three times, and then fully washed with ethanol, and then the solid was vacuum-dried at room temperature for 8 hours to obtain CMSEBS, its chlorine The degree of methylation was 0.35.

[0051] Dissolve 0.5 g of the above-prepared CMSEBS in 3 mL of chloroform, then add 15 mL of tetrachloroethane, and stir at room temperature to obtain an orange-yellow transparent solution. At the same time, 0.5g ZIF-8 molecular sieve was ultrasonically dispersed in 30mL tetrachloroethane. Then the ZIF-8 / tetrachloroethane dispersion solution was ...

Embodiment 3

[0053] Dissolve 4g of SEBS in 100mL of carbon tetrachloride, add in sequence in ice-water bath (7°C), 4mL of SnCl 4 And 8mL1,4-dichloromethoxybutane, then magnetically stirred at room temperature for 24h. After the reaction solution returned to room temperature, it was poured into ethanol to precipitate a yellow solid, which was dissolved in tetrahydrofuran and then precipitated with ethanol. This process was repeated three times, and then fully washed with ethanol, and then the solid was vacuum-dried at room temperature for 8 hours to obtain CMSEBS, its chlorine The degree of methylation was 0.2.

[0054] Dissolve 0.5 g of the above-prepared CMSEBS in 2 mL of chloroform, then add 8 mL of tetrachloroethane, and stir at room temperature to obtain an orange-yellow transparent solution. At the same time, ultrasonically disperse 0.05 g of ZIF-6 molecular sieve in 1 mL of tetrachloroethane. Then the ZIF-6 / tetrachloroethane dispersion solution was slowly added dropwise to the solu...

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Abstract

The invention belongs to an alkaline polymer electrolyte membrane. The invention also relates to a preparation method of the organic-MOF composite alkaline polymer electrolyte membrane. The preparation method comprises the following steps: (1) preparing a chloromethylated polymer, and (2) preparing a chlorine type organic-MOF composite alkaline membrane. The alkaline polymer electrolyte membranes(APEMs) have strong water retention capacity, good chemical stability and high conductivity.

Description

technical field [0001] The invention belongs to the field of alkaline polymer electrolyte membranes; the invention also relates to the preparation of alkaline polymer electrolyte membranes (APEMs) with strong water retention capacity, good chemical stability and relatively high conductivity. Background technique [0002] Alkaline polymer electrolyte membrane fuel cells (APEMFCs) with alkaline polymer membranes as solid electrolytes have fast cathode reaction kinetics, can use non-noble metals as electrocatalysts, and can effectively avoid dendrite short circuits caused by salt deposition. and other advantages. Since it was first reported in 2005, it has become one of the research hotspots in the field of fuel cells. As one of the key materials for alkaline fuel cells, alkaline polymer electrolyte membranes have been extensively studied and made great progress. Through molecular structure design, a continuous and obvious microscopic phase separation structure was constructe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/1044H01M8/1069
CPCH01M8/1044H01M8/1069H01M2008/1095Y02E60/50
Inventor 王素力杨丛荣孙公权
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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