CN100353597C - Method for preparing catalytic film of hydrogen air fuel cell - Google Patents
Method for preparing catalytic film of hydrogen air fuel cell Download PDFInfo
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- CN100353597C CN100353597C CNB2004100466455A CN200410046645A CN100353597C CN 100353597 C CN100353597 C CN 100353597C CN B2004100466455 A CNB2004100466455 A CN B2004100466455A CN 200410046645 A CN200410046645 A CN 200410046645A CN 100353597 C CN100353597 C CN 100353597C
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- platinum
- carbon paper
- fuel cell
- air fuel
- bar
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The present invention discloses a method for preparing a catalytic film of a hydrogen air fuel cell. In high vacuum electric field of which the ultimate vacuum is less than 8*10<-4>Pa, carbon paper is used as shooting material of a positive pole, and a platinum bar is used as an electron gun of a negative pole. Coils are heated for heating and softening the platinum bar. An electron beam of the platinum bar is used for sputtering the shooting material of a positive pole under the action that the coils are deflected in an omnidirection way. The present invention is characterized in that platinum particles are ordered tiled on the carbon paper and are not overlapped to be piled up according to set particle size and loose degree that the platinum particles are sputtered on the carbon paper by a magnetic-control vacuum sputtering method. 0.4 to 0.6 mg/cm<2> of platinum in a chemical method is reduced to less than 0.1 mg/cm<2>, and the entire production process is completely controlled by a computer. Thus, the feasibility of multitudinous automatic production is guaranteed. The present invention has simple manufacturing process, and catalysts can not be overlapped on the carbon paper.
Description
Technical field
The present invention relates to a kind of catalytic membrane manufacture method, particularly relate to a kind of hydrogen-air fuel cell catalytic membrane manufacture method.
Background technology
The operation principle of hydrogen-air fuel cell is under the effect of catalyst, and the activate hydrogen ion carries out redox reaction by proton exchange membrane and oxygen, and produces electronics and generate water, so catalyst is a requisite main material in the battery.At present widely used is platinum (Pt), and platinum is the noble metal also more expensive than gold, owing to use platinum to be catalyst in the battery, it also is one of reason of holding at high price of hydrogen-air fuel cell, therefore improving battery performance, and reducing the consumption of platinum, is a big problem of battery research.
The making of battery requires catalyst (platinum) that being tiled on the carrier carbon paper of laxity arranged with nano level epigranular.Present domestic chemical method such as the ion-exchange mostly used, direct-reduction process etc., the advantage of this method is that cost of equipment is low, but complex process, repetition rate is low, be difficult to carry out industrialization production, and main be that platinum catalyst has only the thinnest one deck can play catalytic action on carbon paper, and its overlapping accumulation part is waste entirely.This is difficult to be avoided with chemical preparation proton exchange membrane assembly the time.
Summary of the invention
Technical problem to be solved by this invention provides the hydrogen-air fuel cell catalytic membrane manufacture method that a kind of technology is simple, catalyst can be not overlapping on carbon paper.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: in final vacuum less than 8 * 10
-4In the high vacuum electric field of Pa, being anodal target with carbon paper, is the negative pole electron gun with the platinum bar, is the thermoplastic of platinum bar with heater coil, and platinum bar electron beam carries out sputter to anodal carbon paper target under comprehensive deflecting coil effect.
As a kind of improvement of the present invention, be the thermoplastic of platinum bar with graphite electrode assistant heating coil.
The softening heating power supply of adjustable platinum bar is 0 ∽ 5V, 60 ∽ 100A; Adjustable high voltage power supply is 0 ∽ 10KV, 5 ∽ 50mA; Row vertical yoke current generator power 5 ∽ 50W.
Adopt the hydrogen-air fuel cell catalytic membrane manufacture method of technique scheme, it is a kind of magnetic control vacuum sputtering, be different from external sputter mode commonly used, it is granule size platinum catalyst, arrangement order position and shatter value on carbon paper, all in the magnetic control scope, it is similar with the operation principle of picture tube basically, but much simple, be the hydrogen-air fuel cell catalytic membrane manufacture method that a kind of technology is simple, catalyst can be not overlapping on carbon paper.
Description of drawings
Accompanying drawing is a fundamental diagram of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is elaborated.
Referring to accompanying drawing, whole work is all carried out in high vacuum, and final vacuum should be less than 8 * 10
-4Pa, 1 is carbon paper among the figure, is equivalent to the phosphor screen of picture tube, is anodal in electric field; 2 for the platinum bar be negative pole; 3 is graphite electrode; Platinum bar 2 and graphite electrode 3 are equivalent to the filament of picture tube; 4 is heater coil; 5,6,7,8 is comprehensive deflecting coil, divide position, four directions installation up and down, with carbon paper 1 is anodal target, with platinum bar 2 is the negative pole electron gun, with heater coil 4 and graphite electrode 3 is 2 thermoplastics of platinum bar, and platinum bar electron beam carries out sputter to anodal carbon paper 1 target under comprehensive deflecting coil 5,6,7,8 effects.
Equipment comprises with lower unit:
1, vacuum system, each one of mechanical pump, diffusion pump;
2, softening heating power supply one cover of the adjustable platinum of 0-5V 100A;
3,0-10KV 50mA adjustable high voltage power supply one cover;
4, each cover of the capable vertical yoke current generator of power 50W;
5, target (carbon paper) automatic transfer equipment one cover (80 every batch) can carry out continuity production as required;
6,5KW, 380V stabilized voltage power supply one cover;
7, one in computer of control.
Each Elementary Function is as follows:
1, vacuum system requires in 30 minutes gas pressure in vacuum to be reduced to 8 * 10
-4Below the Pa;
2, regulate the size of heating power supply, can change the softening degree of platinum and then the granular size that control is splashed to the platinum particles on the carbon paper;
3, regulate the 0-10KV high voltage source, can change the speed and the density of sputter platinum particles;
4, the direction of control row vertical yoke current and and time relation, just can be by the rule of lining by line scan with each nano level platinum particles by orderly one by one being tiled on the carbon paper and phenomenons such as zero lap accumulation of the requirement of shatter value.
5, the target automatic transfer equipment is an oval conveyer belt, and it can will descend a slice to go to sputter pros after preceding a slice sputter is intact automatically, and its conversion speed will be adjusted automatically according to every sputtering time, and the useful load of each conveyer belt is 80.
6,5KW 380V stabilized voltage power supply, require that the fluctuation ratio of power supply is not more than in 24 hours non-stop operating times ± 1%.
7, when using first, operation by hand earlier, the measurement of vacuum degree is reached the size of the platinum particles of sputter as required, and arrangement position and the shatter value of particle on carbon paper, the power that platinum is softening, the height of sputtering voltage, the power polarity of row-field scanning and with signals such as time relation,,, will all be undertaken in the work afterwards as control program by transducer input computer by this program.
This magnetron sputtering method can make the use amount of platinum, at the 0.4-0.6mg/cm that uses chemical method
2Be reduced to less than 0.1mg/cm
2, simultaneously, can guarantee product quality, accomplish the consistency of each product specification and parameter, and then guaranteed the possibility of the industrialization production automation.This device also can be used for other field that other needs vacuum sputtering except that the making of serving the proton exchange membrane assembly.
Embodiment:
Carbon paper target with 100 * 50mm is an example.
The requirement granularity is 2nm, and shatter value is 0.5nm, and then behavior 5.5 * 10
7Particle, total population is 15.125 * 10
9
Condition of work:
1, vacuum degree: 8 * 10
-1Pa;
2, the voltage that is added on heater coil is 3V, electric current 75A, and power 225VA, during frequency 50Hz, the platinum temperature is 800 ℃.
3, the sawtooth waveforms frequency values of line deflector coil 5,6 is 55KC power 10W;
4, the sawtooth waveforms frequency values of field deflection coil 7,8 is 27.5KC power 20W;
5, be 8.5KV by carbon paper target (positive pole) to the voltage between the platinum bar (negative pole), be 1 second every carbon paper target sweep time.
Claims (2)
1, a kind of hydrogen-air fuel cell catalytic membrane manufacture method is characterized in that: in final vacuum less than 8 * 10
-4In the high vacuum electric field of Pa, being anodal target with carbon paper, is the negative pole electron gun with the platinum bar, is the thermoplastic of platinum bar with heater coil, and platinum bar electron beam carries out sputter to anodal carbon paper target under comprehensive deflecting coil effect.
2, a kind of hydrogen-air fuel cell catalytic membrane manufacture method according to claim 1, it is characterized in that: with graphite electrode assistant heating coil is the thermoplastic of platinum bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100466455A CN100353597C (en) | 2004-08-10 | 2004-08-10 | Method for preparing catalytic film of hydrogen air fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100466455A CN100353597C (en) | 2004-08-10 | 2004-08-10 | Method for preparing catalytic film of hydrogen air fuel cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1599108A CN1599108A (en) | 2005-03-23 |
| CN100353597C true CN100353597C (en) | 2007-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100466455A Expired - Fee Related CN100353597C (en) | 2004-08-10 | 2004-08-10 | Method for preparing catalytic film of hydrogen air fuel cell |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1315214C (en) * | 2005-08-04 | 2007-05-09 | 王善理 | Method and device for making calalyst layer of fuel cell |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4275126A (en) * | 1978-04-12 | 1981-06-23 | Battelle Memorial Institute | Fuel cell electrode on solid electrolyte substrate |
| US6171721B1 (en) * | 1997-09-22 | 2001-01-09 | California Institute Of Technology | Sputter-deposited fuel cell membranes and electrodes |
| CN1487610A (en) * | 2003-08-13 | 2004-04-07 | 中国科学院长春应用化学研究所 | Prepn of electrode for proton exchange film fuel cell |
-
2004
- 2004-08-10 CN CNB2004100466455A patent/CN100353597C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4275126A (en) * | 1978-04-12 | 1981-06-23 | Battelle Memorial Institute | Fuel cell electrode on solid electrolyte substrate |
| US6171721B1 (en) * | 1997-09-22 | 2001-01-09 | California Institute Of Technology | Sputter-deposited fuel cell membranes and electrodes |
| CN1487610A (en) * | 2003-08-13 | 2004-04-07 | 中国科学院长春应用化学研究所 | Prepn of electrode for proton exchange film fuel cell |
Non-Patent Citations (3)
| Title |
|---|
| High performance proton exchange membrane fuel cellswithsputter-diposited Pt layer electrodes. Shinichi Hirano,et al.Electrochimica Acta.,Vol.42 No.10. 1997 * |
| PEMFC膜电极组件(MEA)制备方法的评述 马建新等.化学进展，第16卷第5期 2004 * |
| 最新离子镀技术-磁控电弧蒸发器 田大准.航天工艺，第3期 1989 * |
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| CN1599108A (en) | 2005-03-23 |
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Owner name: HUNAN FENGRI POWER ELECTRICAL CO., LTD. Free format text: FORMER OWNER: CHANGSHA RIFENG ELECTRICAL GROUP CO., LTD. Effective date: 20100622 |
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Free format text: CORRECT: ADDRESS; FROM: 410323 LIUYANG BIOMEDICINE INDUSTRY PARK, LIUYANG CITY, HUNAN PROVINCE TO: 410331 FENGRI ELECTRICAL (GROUP) CO., LTD., INDUSTRY PARK, LIUYANG CITY, HUNAN PROVINCE |
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Effective date of registration: 20100622 Address after: 410331 Liuyang City Industrial Park, Hunan Province, Japan electric group Limited by Share Ltd Patentee after: Hu'nan Fengri Power and Electric Co., Ltd. Address before: 410323 Liuyang biomedical industry park, Liuyang, Hunan Patentee before: Fengri Electric Group Co., Ltd., Changsha |
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Granted publication date: 20071205 Termination date: 20130810 |