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Proton conduction diaphragm and preparation method thereof

A technology of proton conduction and diaphragm, applied in the direction of final product manufacturing, sustainable manufacturing/processing, fuel cells, etc., can solve problems such as short service life, failure to meet application requirements, poor toughness of proton conduction diaphragm, etc. Tensile strength, promotion of movement, and the effect of improving longitudinal tensile strength

Active Publication Date: 2020-11-03
河南银金达新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a proton conduction diaphragm and a preparation method thereof, in order to solve the problems that existing proton conduction diaphragms have poor toughness, cannot meet application requirements, and have a short service life

Method used

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  • Proton conduction diaphragm and preparation method thereof

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preparation example Construction

[0025] In an embodiment, the preparation method of the proton-conducting membrane comprises the following steps:

[0026] (1) Mix 230-280 parts by mass of boehmite ceramic powder, 8-17 parts of polymethyl methacrylate, 0.6-1.3 parts of ammonium polyacrylate, 0.5-0.8 parts of lauryl polyoxyethylene ether, 0.4 -0.7 parts of carboxyethyl cellulose, 1.3-2.2 parts of sodium bis(2-ethylhexyl) hydroxysuccinate sulfonate, 0.4-0.9 parts of disodium octadecyl succinic acid monoamide sulfonate, 2-3 parts After mixing 1 part of polyethyl methacrylate, 0.1-0.2 part of graphene, and 500-800 parts of water, stir for 15-20 minutes at a microwave power of 80-150W, a temperature of 40-50°C, and a speed of 200-300r / min , to obtain slurry;

[0027] (2) Coating the slurry prepared in step (1) on the surface of a polyolefin film with a thickness of 12-13 μm by micro gravure coating to prepare a semi-finished separator with a coating thickness of 0.8-2 μm;

[0028] (3) Take 60-75 parts by mass of ...

Embodiment 1

[0032] A method for preparing a proton-conducting membrane, comprising the steps of:

[0033] (1) 236 parts by mass of boehmite ceramic powder, 9 parts of polymethyl methacrylate, 0.7 parts of ammonium polyacrylate, 0.5 parts of lauryl polyoxyethylene ether, 0.4 parts of carboxyethyl cellulose, 1.5 parts Parts of sodium di(2-ethylhexyl) hydroxysuccinate sulfonate, 0.4 parts of disodium octadecyl succinic acid monoamide sulfonate, 2.1 parts of polyethyl methacrylate, 0.1 parts of graphene, 520 parts of water After mixing, stir for 19 minutes at a microwave power of 100W, a temperature of 42°C, and a rotation speed of 200r / min to obtain a slurry;

[0034] (2) Coating the slurry prepared in step (1) on the surface of a polyolefin film with a thickness of 12 μm by micro gravure coating to prepare a semi-finished separator with a coating thickness of 1 μm;

[0035] (3) Take 62 parts by mass of silane coupling agent kh550, add it to water, and add acetic acid to adjust the pH value...

Embodiment 2

[0038] A method for preparing a proton-conducting membrane, comprising the steps of:

[0039] (1) 275 parts by mass of boehmite ceramic powder, 16 parts of polymethyl methacrylate, 1.2 parts of ammonium polyacrylate, 0.7 parts of lauryl polyoxyethylene ether, 0.6 parts of carboxyethyl cellulose, 2 Parts of sodium bis(2-ethylhexyl) hydroxysuccinate sulfonate, 0.9 parts of disodium octadecyl succinic acid monoamide sulfonate, 3 parts of polyethyl methacrylate, 0.2 parts of graphene, 786 parts of water After mixing, stir for 16 minutes at a microwave power of 140W, a temperature of 48°C, and a rotation speed of 300r / min to obtain a slurry;

[0040] (2) Coating the slurry prepared in step (1) on the surface of a polyolefin film with a thickness of 12.8 μm by micro gravure coating to prepare a semi-finished separator with a coating thickness of 1.6 μm;

[0041](3) Take 72 parts by mass of silane coupling agent kh550, add it to water, and add acetic acid to adjust the pH value to 5...

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Abstract

The invention discloses a preparation method of a proton conduction diaphragm. The preparation method comprises the following steps: (1) mixing boehmite ceramic powder, polymethyl methacrylate, ammonium polyacrylate, polyoxyethylene lauryl ether, carboxyethyl cellulose, bis(2ethylhexyl) hydroxysuccinate sodium sulfonate, disodium octadecyl columbate monoamide sulfonate, polyethyl methacrylate, graphene and water, and performing stirring under a microwave condition to obtain slurry; (2) coating the surface of a polyolefin film with the slurry in a micro-concave roller coating manner to preparea semi-finished diaphragm; (3) adding a coupling agent into water, and adding acid to adjust the pH value, so as to prepare a coupling agent solution; (4) coating the surface of the semi-finished diaphragm with the coupling agent solution in a spraying manner, and then drying the diaphragm to obtain the proton conduction diaphragm. The proton conduction diaphragm prepared by the invention is applied to a fuel cell, is high in efficiency, is not easy to generate fuel permeation, and is long in service life.

Description

technical field [0001] The invention belongs to the technical field of diaphragm preparation, and in particular relates to a proton-conducting diaphragm and a preparation method thereof. Background technique [0002] Proton-conducting membranes are used in many electrochemical applications, including fuel cells, electrolyzers, supercapacitors, sensors, and batteries. Nafion is the most commonly used membrane in fuel cells operating near room temperature (up to 100°C). Nafion, being a solid polymer electrolyte, has two major disadvantages, being very expensive and drying out during fuel cell operation due to water being dragged by protons. [0003] Proton-conducting membranes are the core technology of modern fuel cells. However, the efficiency of proton-conducting membranes currently used in fuel cells is relatively low, and they are prone to fuel permeation, leading to pollution. In addition, there are also the problems of poor toughness, which cannot meet application req...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/1069H01M8/1041
CPCH01M8/1041H01M8/1069Y02E60/50Y02P70/50
Inventor 李国庆吕志国李航樊鹏鹏夏国华
Owner 河南银金达新材料股份有限公司
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