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A highly enhanced fluorine-containing chloro-alkaline fuel cell membrane

A fuel cell membrane, enhanced technology, applied in the direction of fuel cells, circuits, electrical components, etc., can solve the problems of release agent pollution, complex preparation process of battery membrane, difficulty in continuous production, etc., and increase the tensile strength , Satisfy commercial large-scale mass production, and improve the effect of dimensional stability

Active Publication Date: 2022-07-15
上海汉纭新能源科技有限公司 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] Due to the above-mentioned technical problems in the prior art, this application aims to propose a special high-strength fluorine-containing chlorine-containing alkaline fuel cell membrane in order to overcome the complex preparation process of the battery membrane in the prior art, which is easily polluted by the release agent and is difficult. serial production problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The special high-enhanced fluorine-containing chloro-alkaline fuel cell membrane contains three layers of microporous enhanced membranes, each of which is filled with fluorine-containing proton exchange resin or ion exchange resin on both sides, and the The weight ratio of proton exchange resin or ion exchange resin is (5:95)~(40:60), preferably (10:90)~(30:70). The total weight is 2-500 g / m2, preferably 5-300 g / m2, the best is 5-200 g / m2, and its thickness is 1-300 microns, preferably 2-200 microns, the best The tensile strength of the special high-strength fluorine-containing chloro-alkali fuel cell membrane (refer to ASTM D882 test method) (TD, MD) between 3 microns and 100 microns in both directions should be >40MPa, preferably >50MPa, optimal > 80MPa, the normal temperature proton / ion conductivity of the enhanced composite membrane (IonicConductivity, GB / T 20042.3-2009 Proton Exchange Membrane Fuel Cell Part 3: Proton Exchange Membrane Test Method)>0.007(S / cm), pre...

Embodiment 2

[0041] The special high-enhanced fluorine-containing chloro-alkaline fuel cell membrane contains 3 to 30 layers of microporous enhanced membranes, and each layer of the microporous enhanced membrane is filled with fluorine-containing proton exchange resin or ion exchange resin on both sides. One side of the fluorochloro-alkali battery composite membrane is covered with perfluorocarboxylic acid resin, and the other side is covered with fluorine-containing sulfonic acid resin. The total weight ratio of the microporous reinforced membrane to the fluorine-containing proton exchange resin or ion exchange resin is (5:95)~(40:60), preferably at (10:90)~(30:70), the total weight of the high-enhanced chlor-alkali battery composite membrane is 20~450 g / square meter, preferably 50~ 300 g / m2, the optimal range is 100-250 g / m2, and the thickness is 10-230 microns, preferably 25-150 microns, and the optimal range is 50-130 microns. The tensile strength (TD, MD) of the composite membrane for...

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Abstract

The invention discloses a high-enhanced fluorine-containing chloro-alkaline fuel cell membrane, which contains at least two layers of microporous enhanced membranes, each layer of the microporous enhanced membrane is filled with fluorine-containing proton exchange resin or ion exchange resin on both sides, and the microporous enhanced membrane is filled with fluorine-containing proton exchange resin or ion exchange resin. The weight ratio of the membrane to the fluorine-containing proton exchange resin or ion exchange resin is 5:95 to 40:60, and the total weight of the high-enhanced fluorine-containing chloro-alkaline fuel cell membrane is 20 to 500 grams per square meter, and its thickness is 10 microns. ~260 microns, the tensile strength of the high-enhanced fluorine-containing chloro-alkaline fuel cell membrane should be >40MPa in both directions, and the room temperature ionic conductivity of the high-enhanced fluorine-containing chloro-alkaline fuel cell membrane is > 0.007S / cm, so The air permeability of the high-enhanced fluorine-containing chloro-alkaline fuel cell membrane was measured with a Gurley air permeability meter, and the time required for 100 ml of air to pass through the composite membrane was >5 minutes.

Description

technical field [0001] The invention relates to a special high-enhanced fluorine-containing chlorine-alkali fuel cell membrane. Background technique [0002] Proton exchange membrane fuel cell (PEMFC) is a high-efficiency power generation device that can directly convert fuel and chemical energy into electrical energy. It has received extensive attention from various industries. Its core component is the proton exchange membrane, which is at the center of the fuel cell and provides a channel for the transmission of protons generated by the cathode to the anode. At present, the most used proton exchange membranes on the market are still the earliest commercialized perfluorosulfonic acid Nafion series membranes (>25 microns thick) of DuPont in the United States, which are mainly obtained by melt extrusion, calendering and stretching. Recently, the Gore-Select membrane series of Gore Corporation of the United States is an ultra-thin (<25 micron thick) single-layer micro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/1039H01M8/1041H01M8/1065H01M8/1069
CPCH01M8/1065H01M8/1039H01M8/1041H01M8/1069Y02E60/50
Inventor 吴慧生杨颖
Owner 上海汉纭新能源科技有限公司