Multi-layer carbinol resistance compound film for decomposition-resisting fuel battery and its making method

A fuel cell and anti-degradation technology, which is applied in the field of proton exchange membranes, can solve the problems of short battery operation and short service life, and achieve the effects of low cost, good anti-degradation ability, and simple process

Inactive Publication Date: 2007-09-12
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among these numerous technologies, beneficial results have been achieved, but these technologies all have a common defect: improving the alcohol resistance of the membrane at the expense of a certain performance of the proton exchange membrane (such as mechanical properties, proton conductivity or cost). performance
At present, most of the hydrocarbon proton exchange membranes on the market have a short service life, and the battery can run for as short as tens of hours, and the longest can only reach several thousand hours, which cannot be compared with perfluorosulfonic acid membranes.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Firstly, a blended hydrocarbon proton exchange membrane was prepared: 0.45 g of SPEEK and 0.05 g of PES were dissolved in 9.5 g of DMF to prepare a casting solution. Then pour the casting solution into a glass petri dish and cast it into a film, then put it in a constant temperature box, treat it at 40°C, 60°C, and 80°C for 2 hours, and then treat it at 100°C for 4 hours, then cool it naturally to At room temperature, a PES / SPEEK blended hydrocarbon proton exchange membrane with a PES content of 10% is obtained;

[0031] (2) 5% (weight) Nafion alcohol solution and DMF of the same volume are placed in a flask for distillation under reduced pressure to remove alcohol and prepare about 5% (weight) Nafion-DMF solution;

[0032] (3) 0.03 g of TiO 2 Add in the 30 grams of Nafion-DMF solution that step (2) gains, ultrasonic vibration 30 minutes, be made into the solution that the weight ratio of catalyst / (catalyst+Nafion) is 2%;

[0033] (4) The solution obtained in step...

Embodiment 2

[0036] (1) Firstly, a blended hydrocarbon proton exchange membrane was prepared: 0.4 g of SPEEK and 0.1 g of PES were dissolved in 9.5 g of DMF to prepare a casting solution. Then pour the casting solution into a glass petri dish and cast it into a film, then put it in a constant temperature box, treat it at 40°C, 60°C, and 80°C for 2 hours, and then treat it at 100°C for 4 hours, then cool it naturally to At room temperature, a PES / SPEEK blended hydrocarbon proton exchange membrane with a PES content of 20% is obtained;

[0037] (2) 5% (weight) Nafion alcohol solution and DMF of the same volume are placed in a flask for distillation under reduced pressure to remove alcohol and prepare about 5% (weight) Nafion-DMF solution;

[0038] (3) 0.1 g of TiO 2 Add in 30 grams of Nafion-DMF solution obtained in step (2), and ultrasonically vibrate for 30 minutes to form a solution with a weight ratio of catalyst / (catalyst+Nafion) of about 6.5%;

[0039] (4) The solution obtained in st...

Embodiment 3

[0042] (1) Firstly, a blended hydrocarbon proton exchange membrane was prepared: 0.45 g of SPEEK and 0.05 g of PES were dissolved in 9.5 g of DMF to prepare a casting solution. Then pour the casting solution into a glass petri dish and cast it into a film, then put it in a constant temperature box, treat it at 40°C, 60°C, and 80°C for 2 hours, and then treat it at 100°C for 4 hours, then cool it naturally to At room temperature, a PES / SPEEK blended hydrocarbon proton exchange membrane with a PES content of 10% is obtained;

[0043] (2) 5% (weight) Nafion alcohol solution and DMF of the same volume are placed in a flask for distillation under reduced pressure to remove alcohol and prepare about 5% (weight) Nafion-DMF solution;

[0044] (3) 0.1 g of TiO 2 Add in the 30 grams of Nafion-DMF solution that step (2) gains, ultrasonic vibration 30 minutes, be made into the solution that the weight ratio of catalyst / (catalyst+Nafion) is 6.5%;

[0045] (4) The solution obtained in ste...

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Abstract

The invention relates to the proton exchange membrane which is used for the fuel cell; put concretely it is an multi layered anti-alcohol compound membrane for anti- degenerating the fuel cell; is compound a layer Nafion proton exchange membrane which includes H2O2 decomposition catalyst on the altogether amixing hydrocarbon compound proton exchange membrane side or two sides. Its preparation method is, Nafion alcohol solution with the same volume high boiling point solvent, sets in the flask to reduce pressure distillation, removes alcohol, prepares the Nafion-high boiling point solvent solution, joins the H2O2 decomposition catalyst, the super-sonic surges 30 minutes, match the solution with H2O2 decomposition catalyst / (H2O2 decomposition catalyst +Nafion) load ratio is 1-10%, the solution compound altogether mixing hydrocarbon compound proton exchange membrane side or two sides, after treats solvent volatility, puts in the vacuum drying oven, under 120-160 degree centigrade, handing 2-8 hours, namely obtains the multilayered anti- mellow compound membrane which is used for anti- degeneration fuel cell. The multi layered anti-alcohol compound membrane for anti- degenerating the fuel cell in the invention has good anti-alcohol performance, high conductivity, the high anti-degeneration ability, good mechanics machine capability,the low cost and so on characteristic.

Description

technical field [0001] The invention relates to a proton exchange membrane for a fuel cell, in particular to a multilayer alcohol-resisting composite membrane for an anti-degradation fuel cell and a preparation method thereof. Background technique [0002] Fuel cell power generation technology has the advantages of not being limited by the Carnot cycle, high energy conversion efficiency, less environmental pollution, and low noise. It is recognized as the preferred clean and efficient power generation technology in the 21st century. Direct Alcohol Fuel Cell (DAFC) is a new type of Proton Exchange Membrane Fuel Cell (PEMFC) newly developed in recent years. Because fuel (such as methanol, ethanol, etc.; methanol as fuel is called direct methanol fuel cell, referred to as "DMFC") is abundant and cheap, its aqueous solution is easy to carry and store, and the existing gas station system can be used. Therefore, DAFC is suitable as a mobile power source for various purposes. At ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/02H01M8/10H01M2/16H01M4/94H01M4/88H01M8/1011H01M8/1016
CPCY02E60/522Y02P70/50Y02E60/50
Inventor 朱红杨武斌王明
Owner BEIJING JIAOTONG UNIV
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