CN102780009A - Membrane electrode preparation method of fuel battery - Google Patents
Membrane electrode preparation method of fuel battery Download PDFInfo
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- CN102780009A CN102780009A CN2012102747547A CN201210274754A CN102780009A CN 102780009 A CN102780009 A CN 102780009A CN 2012102747547 A CN2012102747547 A CN 2012102747547A CN 201210274754 A CN201210274754 A CN 201210274754A CN 102780009 A CN102780009 A CN 102780009A
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- membrane electrode
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
The invention discloses a membrane electrode preparation method of a fuel battery. The preparation method comprises dispersing a catalyst and a binding agent polyvinylidene fluoride in a dispersant to obtain a slurry; preparing a diffusion layer on carbon cloth serving as a support layer; applying the slurry on the diffusion layer, and baking at 150 to 180 DEG C for 1 to 2 hours in the presence of an inert gas; and hot-pressing at 130 to 150 DEG C under 5 to 10MPa for 3 to 6 minutes to obtain the membrane electrode. The preparation method provided by the invention can improve the catalytic activity and efficiency of the membrane electrode by using a new catalyst preparation method, and can effectively improve the battery performance and stability by adopting a new diffusion layer preparation method, thereby lowering the polarization loss of the battery and improving the performance of the fuel battery.
Description
Technical field
The present invention relates to a kind of preparation method of fuel cell membrane electrode, relate in particular to a kind of membrane electrode preparation method that height ratio capacity, corrosion resistance are strong, have extended cycle life for preparing.
Background technology
In recent years, through various countries scientist and related industry personnel's effort, fuel cell critical material and system integration technology have obtained develop rapidly, and supporting industry also reaches its maturity.Proton Exchange Membrane Fuel Cells (PEMFC) adopts the solid electrolyte polymeric membrane as electrolyte, therefore has advantages such as the energy transformation ratio high and low temperature starts, no electrolytic cell leaks, the no burn into life-span is long.Therefore be acknowledged as the first-selected power supply that promises to be space flight, military affairs, electric automobile and regional power station most.Membrane electrode (MEA) is referred to as " heart " of fuel cell power generation, and the height of its performance and stability has directly determined the quality of fuel battery performance.Therefore, the preparation of high-performance membrane electrode is most important to the propelling of the raising of fuel battery performance and practicalization.
Summary of the invention
The preparation method who the purpose of this invention is to provide a kind of a kind of fuel cell membrane electrode of excellent performance, the membrane electrode of method preparation has the advantages that specific capacity height, corrosion resistance are strong, have extended cycle life.
To achieve these goals, the preparation method of a kind of fuel cell membrane electrode provided by the invention comprises the steps:
Step 1 is scattered in catalyst and binding agent Kynoar in the dispersant, obtains slurry:
Described dispersant is selected from the aqueous solution or the ethanol of isopropyl alcohol, and binding agent is 15% ~ 20% of a catalyst weight; Weight with catalyst is benchmark, by 0.05 ~ 0.3mLmg
-1Amount join in the aqueous solution of isoamyl alcohol, the volume ratio of isoamyl alcohol and water is 1: 2 ~ 4: 1, obtains original slurry after stirring; With original slurry heating, ultrasonic again 30 minutes ~ 60 minutes, form uniform slurries;
Step 2 as supporting layer, and prepares diffusion layer with carbon cloth on supporting layer, the preparation method of diffusion layer is following:
Step 2.1, the carbon cloth of supporting layer is carried out hydrophobic handle: carbon cloth is with the processing of Kynoar emulsion and carry out sintering, at first at 110 ~ 130 ℃ of sintering 10 ~ 20min, then at 300 ~ 360 ℃ of sintering 10 ~ 20min;
Step 2.2; The mediation carbon dust, preparation gas diffusion layers slurry is sprayed on toner slurry on the carbon cloth after the Kynoar emulsion is handled automatically; Then at 120 ~ 130 ℃ of sintering 15 ~ 30min; Form gas diffusion layers at 280 ~ 350 ℃ of sintering 15 ~ 30min at last, and carry out the roll extrusion leveling, reject not flat spot;
Step 3 is coated in the slurries in the step 1 on the diffusion layer, roasting 1 ~ 2h in 150 ~ 180 ℃, inert gas; Hot pressing 3 ~ 6 minutes under 130 ~ 150 ℃, 5 ~ 10MPa then obtains membrane electrode.
Wherein, the catalyst of step 1 prepares as follows:
Step 1.1 is got carbosphere and carbon fiber by 3: 1 mass ratio and is mixed, and adds isopropyl alcohol: the isopropanol water solution of water=1: 3, and ultrasonic dispersing is even;
Step 1.2 drips Co (NO
3)
2Solution, ultrasonic dispersing is even, regulates pH value to 9, stirs, and filters, and obtains filter cake;
Step 1.3, with filtration cakes torrefaction, under the inert gas gas shiled, decomposed 2 hours under 400 ℃ the temperature, complex carrier Co
3O
4-(carbosphere+carbon fiber);
Step 1.4, the gained complex carrier obtains Pt/Co through the in-situ chemical reducing process
3O
4-(carbosphere+carbon fiber) catalyst.
Wherein, the carbon powder material described in the step 1 is selected from carbon black or acetylene black.
The method for preparing fuel cell membrane electrode among the present invention; Adopted new method for preparing catalyst to improve the catalytic activity and the efficient of membrane electrode; Adopted the preparation method of new diffusion layer; Improve the performance and the stability thereof of battery effectively, reduced the polarization loss of battery, thereby improved fuel cell performance.
Embodiment
Embodiment one
Preparation catalyst: get the mixing of carbosphere and carbon fiber by 3: 1 mass ratio, the adding isopropyl alcohol: the isopropanol water solution of water=1: 3, ultrasonic dispersing is even; Slowly drip Co (NO
3)
2Solution, ultrasonic dispersing is even, and regulating the pH value is 9, ultrasonic stirring, suction filtration obtains filter cake; Filter cake in vacuum is dry, under 400 ℃ temperature under the inert gas gas shiled, decomposed 2 hours, complex carrier Co
3O
4-(carbosphere+carbon fiber); The gained complex carrier obtains Pt/ Co through the in-situ chemical reducing process
3O
4-(carbosphere+carbon fiber) catalyst.
As supporting layer, and on supporting layer, prepare diffusion layer with carbon cloth: the carbon cloth of supporting layer is carried out hydrophobic handle: carbon cloth is with the processing of Kynoar emulsion and carry out sintering, at first at 110 ℃ of sintering 10min, then at 300 ℃ of sintering 10 ~ 20min; Select for use carbon black to be in harmonious proportion as carbon powder material; Preparation gas diffusion layers slurry; Toner slurry is sprayed on the carbon cloth after the Kynoar emulsion is handled automatically,, forms gas diffusion layers at 280 ~ 350 ℃ of sintering 15 ~ 30min at last then at 120 ~ 130 ℃ of sintering 15 ~ 30min; And carry out the roll extrusion leveling, reject not flat spot by magnifying glass.
Catalyst and binding agent Kynoar are scattered in the dispersant, obtain slurry: described dispersant is selected from the aqueous solution or the ethanol of isopropyl alcohol, and binding agent is 15% of a catalyst weight; Weight with catalyst is benchmark, presses 0.3mLmg
-1Amount add in the aqueous solution of isoamyl alcohol, the volume ratio of isoamyl alcohol and water is 1: 2, obtains original slurry after stirring; With original slurry heating, ultrasonic again 30 minutes, form uniform slurries.Slurries are coated on the diffusion layer, roasting 1h in 150 ℃, inert gas; Hot pressing 3 minutes under 130 ℃, 5MPa then obtains membrane electrode.
Membrane electrode to preparation carries out short time constant current discharge test, and maximum power density is reached for 35.3mW/cm
2The performance of the membrane electrode of the feasible preparation of the raising of activity of such catalysts obviously improves.
Embodiment two
Preparation catalyst: with embodiment one.
As supporting layer, and on supporting layer, prepare diffusion layer with carbon cloth: the carbon cloth of supporting layer is carried out hydrophobic handle: carbon cloth is with the processing of Kynoar emulsion and carry out sintering, at first at 130 ℃ of sintering 20min, then at 360 ℃ of sintering 20min; Be in harmonious proportion as carbon dust for one exhausted deceiving; Preparation gas diffusion layers slurry; Toner slurry is sprayed on the carbon cloth after the Kynoar emulsion is handled automatically,, forms gas diffusion layers at 350 ℃ of sintering 30min at last then at 130 ℃ of sintering 30min; And carry out the roll extrusion leveling, reject not flat spot by magnifying glass.
Catalyst and binding agent Kynoar are scattered in the dispersant, obtain slurry: described dispersant is selected from the aqueous solution or the ethanol of isopropyl alcohol, and binding agent is 20% of a catalyst weight; Weight with catalyst is benchmark, presses 0.3mLmg
-1Amount add in the aqueous solution of isoamyl alcohol, the volume ratio of isoamyl alcohol and water is 4: 1, obtains original slurry after stirring; With original slurry heating, ultrasonic again 60 minutes, form uniform slurries.Slurries are coated on the diffusion layer, roasting 2h in 180 ℃, inert gas; Hot pressing 6 minutes under 150 ℃, 10MPa then obtains membrane electrode.
Membrane electrode to preparation carries out short time constant current discharge test, and maximum power density is reached for 36.1mW/cm
2The performance of the membrane electrode of the feasible preparation of the raising of activity of such catalysts obviously improves.
The above only is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction; Though the present invention discloses as above with preferred embodiment; Yet be not in order to limiting the present invention, anyly be familiar with the professional and technical personnel, in not breaking away from technical scheme of the present invention; When the technology contents of above-mentioned announcement capable of using is made a little change or is modified to the equivalent embodiment of equivalent variations; In every case be not break away from technical scheme content of the present invention, to any simple modification, equivalent variations and modification that above embodiment made, all still belong in the scope of technical scheme of the present invention according to technical spirit of the present invention.
Claims (3)
1. the preparation method of a fuel cell membrane electrode is characterized in that, comprises the steps:
Step 1 is scattered in catalyst and binding agent Kynoar in the dispersant, obtains slurry:
Described dispersant is selected from the aqueous solution or the ethanol of isopropyl alcohol, and binding agent is 15% ~ 20% of a catalyst weight; Weight with catalyst is benchmark, by 0.05 ~ 0.3mLmg
-1Amount join in the aqueous solution of isoamyl alcohol, the volume ratio of isoamyl alcohol and water is 1: 2 ~ 4: 1, obtains original slurry after stirring; With original slurry heating, ultrasonic again 30 minutes ~ 60 minutes, form uniform slurries;
Step 2 as supporting layer, and prepares diffusion layer with carbon cloth on supporting layer, the preparation method of diffusion layer is following:
Step 2.1, the carbon cloth of supporting layer is carried out hydrophobic handle: carbon cloth is with the processing of Kynoar emulsion and carry out sintering, at first at 110 ~ 130 ℃ of sintering 10 ~ 20min, then at 300 ~ 360 ℃ of sintering 10 ~ 20min;
Step 2.2; The mediation carbon dust, preparation gas diffusion layers slurry is sprayed on toner slurry on the carbon cloth after the Kynoar emulsion is handled automatically; Then at 120 ~ 130 ℃ of sintering 15 ~ 30min; Form gas diffusion layers at 280 ~ 350 ℃ of sintering 15 ~ 30min at last, and carry out the roll extrusion leveling, reject not flat spot;
Step 3 is coated in the slurries in the step 1 on the diffusion layer, roasting 1 ~ 2h in 150 ~ 180 ℃, inert gas; Hot pressing 3 ~ 6 minutes under 130 ~ 150 ℃, 5 ~ 10MPa then obtains membrane electrode.
2. method according to claim 1 is characterized in that, the catalyst of step 1 prepares as follows:
Step 1.1 is got carbosphere and carbon fiber by 3: 1 mass ratio and is mixed, and adds isopropyl alcohol: the isopropanol water solution of water=1: 3, and ultrasonic dispersing is even;
Step 1.2 drips Co (NO
3)
2Solution, ultrasonic dispersing is even, regulates pH value to 9, stirs, and filters, and obtains filter cake;
Step 1.3, with filtration cakes torrefaction, under the inert gas gas shiled, decomposed 2 hours under 400 ℃ the temperature, complex carrier Co
3O
4-(carbosphere+carbon fiber);
Step 1.4, the gained complex carrier obtains Pt/Co through the in-situ chemical reducing process
3O
4-(carbosphere+carbon fiber) catalyst.
3. method according to claim 2 is characterized in that the carbon powder material described in the step 1 is selected from carbon black or acetylene black.
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| CN2012102747547A CN102780009A (en) | 2012-08-03 | 2012-08-03 | Membrane electrode preparation method of fuel battery |
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|---|---|---|---|
| CN2012102747547A CN102780009A (en) | 2012-08-03 | 2012-08-03 | Membrane electrode preparation method of fuel battery |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103922427B (en) * | 2014-03-28 | 2015-09-30 | 哈尔滨工程大学 | A kind of coprecipitation method of electrode material nickel sodium manganate and the preparation method of nickel sodium manganate electrode |
| CN108842162A (en) * | 2018-06-15 | 2018-11-20 | 重庆大学 | For electrochemical reduction CO2SnO2Nanometer sheet gas-diffusion electrode and method |
| CN111628183A (en) * | 2020-05-27 | 2020-09-04 | 先进储能材料国家工程研究中心有限责任公司 | Preparation method of fuel cell catalyst slurry |
Citations (4)
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|---|---|---|---|---|
| CN101145614A (en) * | 2006-09-15 | 2008-03-19 | 中国电子科技集团公司第十八研究所 | Self-humidifying proton exchange film fuel cell membrane electrode preparation method |
| CN101662032A (en) * | 2009-09-22 | 2010-03-03 | 中国科学院上海微系统与信息技术研究所 | Cathode structure of membrane electrode assembly of direct alcohol fuel cell and manufacturing method |
| CN101944620A (en) * | 2010-08-02 | 2011-01-12 | 北京交通大学 | Fuel cell catalyst taking multi-element compound as carrier and preparation method thereof |
| CN102074715A (en) * | 2009-11-19 | 2011-05-25 | 上海空间电源研究所 | Double-effect membrane electrode for integrated regenerative fuel cell and preparation method thereof |
-
2012
- 2012-08-03 CN CN2012102747547A patent/CN102780009A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101145614A (en) * | 2006-09-15 | 2008-03-19 | 中国电子科技集团公司第十八研究所 | Self-humidifying proton exchange film fuel cell membrane electrode preparation method |
| CN101662032A (en) * | 2009-09-22 | 2010-03-03 | 中国科学院上海微系统与信息技术研究所 | Cathode structure of membrane electrode assembly of direct alcohol fuel cell and manufacturing method |
| CN102074715A (en) * | 2009-11-19 | 2011-05-25 | 上海空间电源研究所 | Double-effect membrane electrode for integrated regenerative fuel cell and preparation method thereof |
| CN101944620A (en) * | 2010-08-02 | 2011-01-12 | 北京交通大学 | Fuel cell catalyst taking multi-element compound as carrier and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103922427B (en) * | 2014-03-28 | 2015-09-30 | 哈尔滨工程大学 | A kind of coprecipitation method of electrode material nickel sodium manganate and the preparation method of nickel sodium manganate electrode |
| CN108842162A (en) * | 2018-06-15 | 2018-11-20 | 重庆大学 | For electrochemical reduction CO2SnO2Nanometer sheet gas-diffusion electrode and method |
| CN111628183A (en) * | 2020-05-27 | 2020-09-04 | 先进储能材料国家工程研究中心有限责任公司 | Preparation method of fuel cell catalyst slurry |
| CN111628183B (en) * | 2020-05-27 | 2022-12-13 | 先进储能材料国家工程研究中心有限责任公司 | Preparation method of fuel cell catalyst slurry |
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