CN101667647A - Bipolar plate for proton exchange membrane fuel cell - Google Patents
Bipolar plate for proton exchange membrane fuel cell Download PDFInfo
- Publication number
- CN101667647A CN101667647A CN200910013243A CN200910013243A CN101667647A CN 101667647 A CN101667647 A CN 101667647A CN 200910013243 A CN200910013243 A CN 200910013243A CN 200910013243 A CN200910013243 A CN 200910013243A CN 101667647 A CN101667647 A CN 101667647A
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- bipolar plates
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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 bipolar plate for a proton exchange membrane fuel cell, which is a metal bipolar plate with an air or cooling liquid passage formed by a bulge and a groove. The surface of the groove of the metal bipolar plate with the air or cooling liquid passage formed by the bulge and the groove is provided with a corrosion-resistant protective layer, and the top surface of the bulgeis provided with a surface modification layer for improving conductivity and corrosion resistance. The invention has the advantages that the surface modification layer has good binding force, compaction and high corrosion resistance and conductivity and can greatly enhance the property and prolong the service life of the bipolar plate in PEMFC, has very economic processing process and mature technology and can effectively reduce the preparing cost of the bipolar plate, only carry out the conductive and corrosion-resistant modification on a platform of the bipolar plate, save a large quantity of valuable modification materials and reduce the cost of the bipolar plate.
Description
Technical field
The present invention relates to the Proton Exchange Membrane Fuel Cells field, relate in particular to the used in proton exchange membrane fuel cell bipolar plates.
Background technology
As the critical piece of Proton Exchange Membrane Fuel Cells (PEMFC), bipolar plates accounts for more than 70% of battery weight, accounts for the battery total cost near half.Desirable bipolar plates should have very high conductivity, corrosion resistance, low-density, high mechanical properties, high choke ability, low-cost and easy-to processing.
The metal strength height, corrosion resistance and good is desirable Proton Exchange Membrane Fuel Cells (PEMFC) bipolar plate material.But metal double polar plates has following deficiency: 1, the corrosion resistant metal surface energy forms passivating film naturally, and this passivating film resistance is very big, can increase the internal resistance of battery as dual polar plates of proton exchange membrane fuel cell, thereby reduces the output of the energy content of battery; 2, under the Proton Exchange Membrane Fuel Cells environment, corrosion can take place and produce metal ion in metal, and then proton exchange membrane is produced pollution, reduces battery performance and life-span.In the prior art, make dual polar plates of proton exchange membrane fuel cell, all stainless steel surfaces is carried out modification usually and handle, to improve the electrical property of bipolar plate of stainless steel with stainless steel.Relevant patent proposed to be projected at metal surface coating electrically conductive anti-corrosion coating and in the stainless steel of metallic inclusion under the passivating film passivating film outside method, as the patent No. 02155187 patent: " dual polar plates of proton exchange membrane fuel cell ", method at base metal surface coating electrically conductive anti-corrosion coating has been proposed, coating is the anti-corrosion metal oxide of conduction, coating layer thickness 0.1-50 μ m.The patent No. is 00105765.0 patent: " use in solid polymer fuel cell bipolar plate of stainless steel ", proposed a kind of with in carbonization system metallic inclusion with conductivity and the boronation system metallic inclusion, made above metallic inclusion be projected into the technology of the stainless steel making bipolar plates of passivating film outside in the passivating film stainless steel down.The material surface of the bipolar plates of this patented method preparation has the passivation film of certain area, and the conductivity of carbide or boride also is difficult to ensure, so the conductivity of this material is difficult to satisfy the Proton Exchange Membrane Fuel Cells requirement more and more higher to bipolar plates.
Summary of the invention
The object of the present invention is to provide a kind of used in proton exchange membrane fuel cell bipolar plates, handle, the decay resistance of bipolar plates and conductive capability are improved by the metal surface being carried out modification.And can realize low-cost production in enormous quantities the in enormous quantities.Technical scheme of the present invention is: a kind of used in proton exchange membrane fuel cell bipolar plates; comprise that two have projection and the gas of groove formation or the unipolar plate of cooling passage; two unipolar plate are combined into bipolar plates; there is corrosion-resistant protective layer on the surface that it is characterized in that the groove of the described unipolar plate that has gas that projection and groove form or a cooling passage, and protruding end face has the surface reforming layer that improves conductivity and corrosion resistance.
A kind of used in proton exchange membrane fuel cell bipolar plates of the present invention, the unipolar plate that it is characterized in that described gas that has projection and groove formation or cooling passage is any one in stainless steel unipolar plate, titanium unipolar plate, titanium alloy unipolar plate and the aluminium alloy single pole plate
A kind of used in proton exchange membrane fuel cell bipolar plates of the present invention; the surperficial corrosion-resistant protective layer that it is characterized in that the groove of the bipolar plate of stainless steel in the metal double polar plates of described gas that has projection and groove formation or cooling passage is a passivation layer; the surperficial corrosion-resistant protective layer of the groove of titanium bipolar plates and titanium alloy bipolar plates is a high temperature oxide layer, and the surperficial corrosion-resistant protective layer of the groove of aluminium alloy bipolar plates is an anodic oxide coating.
A kind of used in proton exchange membrane fuel cell bipolar plates of the present invention, the surface reforming layer that improves conductivity and corrosion resistance of end face that it is characterized in that the projection of the described metal double polar plates that has gas that projection and groove form or a cooling passage are a kind of in the conductive compound coating of a kind of or chromium, titanium and zirconium transition metal in silver-colored and the golden precious metal plating.
The preparation method of a kind of used in proton exchange membrane fuel cell bipolar plates of the present invention may further comprise the steps:
A) on the parent metal thin plate, stamp out and have projection and the gas that is recessed to form or the bipolar plates of cooling passage;
B) punching press there is the metal double polar plates of gas or cooling passage carry out passivation or oxidation or anodized, forms corrosion-resistant protective layer on metal twin-stage plate surface;
C) will be through the metal double polar plates surface applied layer protecting film of step b) processing; Diaphragm is a kind of in the plastic film of paint film or plating.
D) polish off through step c) and applied the diaphragm of metal twin-stage plate projection end face coating of layer protecting film and diaphragm, expose metallic matrix down by the protective layer of passivation or oxidation or anodized formation;
E) metallic matrix that the metal twin-stage plate projection end face of handling through step d) is exposed carries out surface modification treatment, at the improve surface reforming layer of conductivity and corrosion resistance of protruding end face;
F) remove the diaphragm that the metallic plate recess applies, keep corrosion-resistant protective layer by passivation or oxidation or anodized formation.
The present invention has following advantage:
1. can to have obtained adhesion in the metal surface good in the present invention, the modification functional layer fine and close, that corrosion resistance is strong, conductivity is strong, thus improved the performance of metal double polar plates under the PEMFC environment; The high performance PE MFC bipolar plate material that obtains can improve performance and the life-span of bipolar plates in PEMFC greatly.
2. the present invention forms corrosion-resistant protective layer by surface modification at metal material surface.The formation of corrosion-resistant protective layer; stainless steel is to carry out Passivation Treatment in acid; titanium and titanium alloy are to carry out oxidation processes; aluminium alloy is to carry out anodized etc.; processing procedure all is very economic processing procedure; technical maturity can effectively reduce the preparation cost of bipolar plates, obtains corrosion resistant protective layer simultaneously.
3. only the bipolar plates platform is conducted electricity anti-corrosion modification, can save a large amount of valuable material modifiedly, reduce the bipolar plates cost.
Description of drawings
Drawings attached 1 width of cloth of the present invention is the organigram of bipolar plates of the present invention.
In the accompanying drawing, 1, protruding end face improves the surface reforming layer of conductivity, 2, the corrosion-resistant protective layer of groove surfaces, 3, metallic matrix.
Embodiment
With thickness is turnover, mouthful passage that the 316L corrosion resistant plate of 0.1mm stamps out reaction gas runner and hydrogen, air and cooling water, and the width of gas flow projection and depression all is 1.5mm, degree of depth 2.0mm.Dry behind the cleanser cleaning bipolar plate surfaces greasy dirt.
Adopt 200 serial passivating solutions of Tianzhang City China bright and beautiful anticorrosion cleaning material factory to carry out Passivation Treatment: bipolar plates be impregnated in the passivation for stainless steel liquid aqueous solution of volume ratio 50%, 20 ℃ are soaked 60s down, take out the back washed with de-ionized water; The sodium hydroxide solution of putting into mass ratio 3% again flooded 5 minutes, took out the back and used washed with de-ionized water, dried naturally in the atmosphere.
Use black to electroplate protective paint and apply the zone that whole bipolar plates has runner, in baking oven, heat 30min then under 60 ℃, take out, be cooled to room temperature.Use 2000# sand paper that the plating protective paint and the passivation layer of bipolar plates gas flow high spot are polished off, make this place expose stainless steel base, carry out silver-plated processing then.Silver plating solution is: KAg (CN)
2, 55g/L; KCN, 135g/L; K
2CO
3, 10g/L.20 ℃ of electroplating solution temperature, cathode-current density 1.0A/dm
2
After bipolar plates gas flow high spot was silver-plated, washed with de-ionized water was fallen the remained on surface electroplating solution, re-used the plating protective paint that banana oil washes the gas flow recess, exposed the passivating film at this place, promptly obtained the high-performance bipolar plate material.
With thickness is turnover, mouthful passage that the TC4 plate (Ti-6Al-4V) of 0.2mm stamps out reaction gas runner and hydrogen, air and cooling water, and the width of gas flow projection and depression all is 2.0mm, degree of depth 2.5mm.Use cleanser to clean bipolar plate surfaces greasy dirt, washed with de-ionized water, drying.
The titanium bipolar plates that punching press is had flow-field channel in 600 ℃ of heating 60min, makes its surface oxidation under the air ambient in muffle furnace.Use black to electroplate protective paint and apply the zone that whole bipolar plates has runner, in baking oven, heat 30min then under 60 ℃, take out, be cooled to room temperature.Use 2000# sand paper that the plating protective paint and the passivation layer of bipolar plates gas flow high spot are polished off, make this place expose the matrix of titanium alloy, carry out gold-plated processing then.Gold plating solution is: Au is (with KAu (CN)
2Form adds), 6g/L; K
2HPO
4, 30g/L; KCN, 30g/L; K
2CO
3, 12g/L.60 ℃ of electroplating solution temperature, cathode-current density 0.5A/dm
2
After bipolar plates gas flow high spot was gold-plated, washed with de-ionized water was fallen the remained on surface electroplating solution, re-used the plating protective paint that trichloroethylene washes the gas flow recess, exposed the passivating film at this place, promptly obtained the high-performance bipolar plate material.
With thickness is turnover, mouthful passage that the LY12 aluminium alloy plate of 0.3mm stamps out reaction gas runner and hydrogen, air and cooling water, and the width of gas flow projection and depression all is 2.5mm, degree of depth 3.0mm.In 70 ℃ of NaOH solution of mass ratio 20%, flood 30s, remove the aluminum alloy surface oxide-film; Under 20 ℃ of temperature, use the HNO of volume ratio 20% again
3Solution cleans 10s, removes the floating ash in top layer.In the sulfuric acid solution of volume ratio 30%, carry out anodic oxidation then, 10 ℃ of temperature, current density 1.5A/dm
2, the time is 30min; On oxide-film, apply bisphenol A type epoxy resin again, made resin solidification in 6 hours 220 ℃ of heating.
Use black to electroplate protective paint and apply the zone that whole bipolar plates has runner, in baking oven, heat 30min then under 60 ℃, take out, be cooled to room temperature.Use 2000# sand paper that the plating protective paint and the passivation layer of bipolar plates gas flow high spot are polished off, make this place expose alloy matrix aluminum, carry out titanium nitride then and handle.With bipolar plates place vacuum chamber and the sealing after, be evacuated to 2Pa with mechanical pump, be evacuated to 3 * 10 with molecular pump then
-3Pa.Feed Ar gas and N
2The mist of gas, its pressure is respectively 0.5Pa and 0.02Pa.At 40 ℃, 40W power, 0.25KV voltage, the Ti target carries out reaction magnetocontrol sputtering under the 0.20A electric current, and the time is 30min.
Bipolar plates is taken out, wash the remained on surface electroplating solution, re-use the plating protective paint that banana oil washes the gas flow recess, expose the passivating film at this place, promptly obtain the high-performance bipolar plate material with deionized water.
Claims (5)
1, a kind of used in proton exchange membrane fuel cell bipolar plates; bipolar plates is to have projection and the gas of groove formation or the metal double polar plates of cooling passage; there is corrosion-resistant protective layer (2) on the surface that it is characterized in that the groove of the described metal double polar plates that has gas that projection and groove form or a cooling passage, and protruding end face has the surface reforming layer (1) that improves conductivity and corrosion resistance.
2, a kind of used in proton exchange membrane fuel cell bipolar plates according to claim 1, the metal double polar plates that it is characterized in that described gas that has projection and groove formation or cooling passage are any one in bipolar plate of stainless steel, titanium bipolar plates, titanium alloy bipolar plates and the aluminium alloy bipolar plates.
3, a kind of used in proton exchange membrane fuel cell bipolar plates according to claim 2; the surperficial corrosion-resistant protective layer that it is characterized in that the groove of the bipolar plate of stainless steel in the metal double polar plates of described gas that has projection and groove formation or cooling passage is a passivation layer; the surperficial corrosion-resistant protective layer of the groove of titanium bipolar plates and titanium alloy bipolar plates is a high temperature oxide layer, and the surperficial corrosion-resistant protective layer of the groove of aluminium alloy bipolar plates is an anodic oxide coating.
4, a kind of used in proton exchange membrane fuel cell bipolar plates according to claim 1, the surface reforming layer that improves conductivity and corrosion resistance (1) of end face that it is characterized in that the projection of the described metal double polar plates that has gas that projection and groove form or a cooling passage are a kind of in the conductive compound coating of a kind of or chromium, titanium and zirconium transition metal in silver-colored and the golden precious metal plating.
5, the preparation method of the described a kind of used in proton exchange membrane fuel cell bipolar plates of claim 1 may further comprise the steps:
A) on the parent metal thin plate, stamp out and have projection and the gas that is recessed to form or the bipolar plates of cooling passage;
B) punching press there is the metal double polar plates of gas or cooling passage carry out passivation or oxidation or anodized, forms corrosion-resistant protective layer on metal twin-stage plate surface;
C) will be through the metal double polar plates surface applied layer protecting film of step b) processing; Diaphragm is a kind of in the plastic film of paint film or plating;
D) polish off through step c) and applied the diaphragm of metal twin-stage plate projection end face coating of layer protecting film and diaphragm, expose metallic matrix down by the protective layer of passivation or oxidation or anodized formation;
E) metallic matrix that the metal twin-stage plate projection end face of handling through step d) is exposed carries out surface modification treatment, at the improve surface reforming layer of conductivity and corrosion resistance of protruding end face;
F) remove the diaphragm that the metallic plate recess applies, keep corrosion-resistant protective layer by passivation or oxidation or anodized formation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910013243A CN101667647A (en) | 2009-08-17 | 2009-08-17 | Bipolar plate for proton exchange membrane fuel cell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910013243A CN101667647A (en) | 2009-08-17 | 2009-08-17 | Bipolar plate for proton exchange membrane fuel cell |
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| CN101667647A true CN101667647A (en) | 2010-03-10 |
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ID=41804155
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9062384B2 (en) | 2012-02-23 | 2015-06-23 | Treadstone Technologies, Inc. | Corrosion resistant and electrically conductive surface of metal |
| CN104835968A (en) * | 2014-11-28 | 2015-08-12 | 武汉工程大学 | Titanium alloy bipolar plate nano-crystal zirconium coating of proton-exchange membrane fuel cell and preparation method thereof |
| CN105140544A (en) * | 2015-08-28 | 2015-12-09 | 航天新长征电动汽车技术有限公司 | Metal bipolar plate and preparation method thereof |
| CN108232236A (en) * | 2018-03-06 | 2018-06-29 | 深圳众为激光设备有限公司 | The surface passivation method and device of online metallic plate fuel cell pile cooling chamber |
| CN108598497A (en) * | 2018-04-28 | 2018-09-28 | 上海治臻新能源装备有限公司 | A kind of nano metal layer and preparation method for fuel battery metal pole plate |
| CN109346743A (en) * | 2018-08-31 | 2019-02-15 | 上海交通大学 | A kind of conductive anti-corrosion coating of fuel battery metal double polar plate |
| CN110474065A (en) * | 2019-08-26 | 2019-11-19 | 珠海格力电器股份有限公司 | Fuel battery pole board, bipolar plates and hydrogen fuel cell |
| JP2019207748A (en) * | 2018-05-28 | 2019-12-05 | トヨタ紡織株式会社 | Fuel cell separator |
| CN111082089A (en) * | 2019-12-31 | 2020-04-28 | 一汽解放汽车有限公司 | Metal bipolar plate with heterogeneous coatings on surfaces of runner grooves and ridges and preparation method thereof |
| CN111092241A (en) * | 2019-12-26 | 2020-05-01 | 一汽解放汽车有限公司 | Method for preparing precious metal coating on surface of metal bipolar plate of proton exchange membrane fuel cell |
| CN111200136A (en) * | 2020-02-20 | 2020-05-26 | 浙江锋源氢能科技有限公司 | Anti-corrosion treatment method for welding wire of metal bipolar plate and metal bipolar plate |
| WO2020134160A1 (en) * | 2018-12-29 | 2020-07-02 | 上海恒劲动力科技有限公司 | Fuel cell metal bipolar plate |
| CN111384414A (en) * | 2018-12-28 | 2020-07-07 | 财团法人工业技术研究院 | Bipolar plate of fuel cell and manufacturing method thereof |
| CN111933965A (en) * | 2020-07-24 | 2020-11-13 | 苏州敦胜新能源科技有限公司 | High-temperature fuel cell bipolar plate oxidation-resistant coating |
| CN112687905A (en) * | 2020-12-26 | 2021-04-20 | 上海捷氢科技有限公司 | Fuel cell anode collector plate and fuel cell stack |
| CN113270608A (en) * | 2021-06-07 | 2021-08-17 | 嘉寓氢能源科技(辽宁)有限公司 | Metal bipolar plate of proton exchange membrane fuel cell beneficial to fluid distribution |
| CN113745558A (en) * | 2021-07-21 | 2021-12-03 | 深圳金恒辉新材料有限公司 | Alloy metal bipolar plate for proton exchange membrane fuel cell and preparation method thereof |
| CN113921842A (en) * | 2021-12-13 | 2022-01-11 | 浙江天能氢能源科技有限公司 | Metal bipolar plate for fuel cell and preparation method thereof |
| CN114725419A (en) * | 2022-03-25 | 2022-07-08 | 湖南氢捷新能源科技有限公司 | Method for manufacturing bipolar plate |
| WO2023232658A1 (en) * | 2022-05-30 | 2023-12-07 | Robert Bosch Gmbh | Separator plate half, separator plate, electrochemical energy converter and method for producing a separator plate half |
-
2009
- 2009-08-17 CN CN200910013243A patent/CN101667647A/en active Pending
Cited By (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9062384B2 (en) | 2012-02-23 | 2015-06-23 | Treadstone Technologies, Inc. | Corrosion resistant and electrically conductive surface of metal |
| US9493883B2 (en) | 2012-02-23 | 2016-11-15 | Treadstone Technologies, Inc. | Corrosion resistant and electrically conductive surface of metal |
| CN104835968A (en) * | 2014-11-28 | 2015-08-12 | 武汉工程大学 | Titanium alloy bipolar plate nano-crystal zirconium coating of proton-exchange membrane fuel cell and preparation method thereof |
| CN105140544A (en) * | 2015-08-28 | 2015-12-09 | 航天新长征电动汽车技术有限公司 | Metal bipolar plate and preparation method thereof |
| CN105140544B (en) * | 2015-08-28 | 2018-08-03 | 航天新长征电动汽车技术有限公司 | A kind of metal double polar plates and preparation method thereof |
| CN108232236A (en) * | 2018-03-06 | 2018-06-29 | 深圳众为激光设备有限公司 | The surface passivation method and device of online metallic plate fuel cell pile cooling chamber |
| CN108598497A (en) * | 2018-04-28 | 2018-09-28 | 上海治臻新能源装备有限公司 | A kind of nano metal layer and preparation method for fuel battery metal pole plate |
| CN108598497B (en) * | 2018-04-28 | 2023-12-19 | 上海治臻新能源股份有限公司 | Nano metal layer for fuel cell metal polar plate and preparation method |
| JP2019207748A (en) * | 2018-05-28 | 2019-12-05 | トヨタ紡織株式会社 | Fuel cell separator |
| JP7081307B2 (en) | 2018-05-28 | 2022-06-07 | トヨタ紡織株式会社 | Fuel cell separator |
| CN109346743A (en) * | 2018-08-31 | 2019-02-15 | 上海交通大学 | A kind of conductive anti-corrosion coating of fuel battery metal double polar plate |
| CN111384414A (en) * | 2018-12-28 | 2020-07-07 | 财团法人工业技术研究院 | Bipolar plate of fuel cell and manufacturing method thereof |
| CN111384414B (en) * | 2018-12-28 | 2022-03-15 | 财团法人工业技术研究院 | Bipolar plate of fuel cell and manufacturing method thereof |
| WO2020134160A1 (en) * | 2018-12-29 | 2020-07-02 | 上海恒劲动力科技有限公司 | Fuel cell metal bipolar plate |
| CN110474065A (en) * | 2019-08-26 | 2019-11-19 | 珠海格力电器股份有限公司 | Fuel battery pole board, bipolar plates and hydrogen fuel cell |
| CN111092241A (en) * | 2019-12-26 | 2020-05-01 | 一汽解放汽车有限公司 | Method for preparing precious metal coating on surface of metal bipolar plate of proton exchange membrane fuel cell |
| CN111082089B (en) * | 2019-12-31 | 2023-08-15 | 一汽解放汽车有限公司 | Metal bipolar plate with runner grooves and ridge surfaces being heterogeneous coatings and preparation method thereof |
| CN111082089A (en) * | 2019-12-31 | 2020-04-28 | 一汽解放汽车有限公司 | Metal bipolar plate with heterogeneous coatings on surfaces of runner grooves and ridges and preparation method thereof |
| CN111200136A (en) * | 2020-02-20 | 2020-05-26 | 浙江锋源氢能科技有限公司 | Anti-corrosion treatment method for welding wire of metal bipolar plate and metal bipolar plate |
| CN111933965A (en) * | 2020-07-24 | 2020-11-13 | 苏州敦胜新能源科技有限公司 | High-temperature fuel cell bipolar plate oxidation-resistant coating |
| CN112687905A (en) * | 2020-12-26 | 2021-04-20 | 上海捷氢科技有限公司 | Fuel cell anode collector plate and fuel cell stack |
| CN113270608B (en) * | 2021-06-07 | 2022-07-15 | 嘉寓氢能源科技(辽宁)有限公司 | Metal bipolar plate of proton exchange membrane fuel cell beneficial to fluid distribution |
| CN113270608A (en) * | 2021-06-07 | 2021-08-17 | 嘉寓氢能源科技(辽宁)有限公司 | Metal bipolar plate of proton exchange membrane fuel cell beneficial to fluid distribution |
| CN113745558B (en) * | 2021-07-21 | 2023-06-16 | 深圳金恒辉新材料有限公司 | Alloy metal bipolar plate for proton exchange membrane fuel cell and preparation method |
| CN113745558A (en) * | 2021-07-21 | 2021-12-03 | 深圳金恒辉新材料有限公司 | Alloy metal bipolar plate for proton exchange membrane fuel cell and preparation method thereof |
| CN113921842B (en) * | 2021-12-13 | 2022-03-29 | 浙江天能氢能源科技有限公司 | Metal bipolar plate for fuel cell and preparation method thereof |
| CN113921842A (en) * | 2021-12-13 | 2022-01-11 | 浙江天能氢能源科技有限公司 | Metal bipolar plate for fuel cell and preparation method thereof |
| CN114725419A (en) * | 2022-03-25 | 2022-07-08 | 湖南氢捷新能源科技有限公司 | Method for manufacturing bipolar plate |
| WO2023232658A1 (en) * | 2022-05-30 | 2023-12-07 | Robert Bosch Gmbh | Separator plate half, separator plate, electrochemical energy converter and method for producing a separator plate half |
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