DE102011120802A1 - Plastic bipolar plate for fuel cell, has inner region formed from electrically conductive material, and peripheral region formed from electrically insulating material such as thermoplastic resin - Google Patents
Plastic bipolar plate for fuel cell, has inner region formed from electrically conductive material, and peripheral region formed from electrically insulating material such as thermoplastic resin Download PDFInfo
- Publication number
- DE102011120802A1 DE102011120802A1 DE102011120802A DE102011120802A DE102011120802A1 DE 102011120802 A1 DE102011120802 A1 DE 102011120802A1 DE 102011120802 A DE102011120802 A DE 102011120802A DE 102011120802 A DE102011120802 A DE 102011120802A DE 102011120802 A1 DE102011120802 A1 DE 102011120802A1
- Authority
- DE
- Germany
- Prior art keywords
- bipolar plate
- inner region
- electrically insulating
- electrically conductive
- fuel cell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0204—Non-porous and characterised by the material
- H01M8/0221—Organic resins; Organic polymers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0204—Non-porous and characterised by the material
- H01M8/0223—Composites
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0204—Non-porous and characterised by the material
- H01M8/0223—Composites
- H01M8/0226—Composites in the form of mixtures
-
- 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
-
- 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
Description
Die Erfindung betrifft eine Bipolarplatte zumindest aus einem Kunststoff für eine Brennstoffzelle und ein Verfahren zur Herstellung einer solchen Bipolarplatte.The invention relates to a bipolar plate at least made of a plastic for a fuel cell and a method for producing such a bipolar plate.
Aus der
Der Erfindung liegt die Aufgabe zugrunde, eine gegenüber dem Stand der Technik verbesserte Bipolarplatte und ein verbessertes Verfahren zur Herstellung einer solchen Bipolarplatte anzugeben.The invention has for its object to provide a comparison with the prior art improved bipolar plate and an improved method for producing such a bipolar plate.
Die Aufgabe wird erfindungsgemäß hinsichtlich der Bipolarplatte durch die in Anspruch 1 und hinsichtlich des Verfahrens durch die in Anspruch 8 angegebenen Merkmale gelöst.The object is achieved with respect to the bipolar plate by the in
Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.Advantageous embodiments of the invention are the subject of the dependent claims.
Eine Bipolarplatte zumindest aus einem Kunststoff für eine Brennstoffzelle weist erfindungsgemäß einen inneren Bereich aus einem elektrisch leitfähigen Material und ein Randbereich aus einem elektrisch isolierenden Material auf.A bipolar plate at least of a plastic for a fuel cell according to the invention has an inner region of an electrically conductive material and an edge region of an electrically insulating material.
Dadurch, dass die Bipolarplatte im Randbereich aus dem elektrisch isolierenden Material in Form des Kunststoffes gebildet ist, ist es z. B. in besonders vorteilhafter Weise möglich, die Randbereiche zweier Bipolarplatten zur Bildung einer Brennstoffzelle stoffschlüssig miteinander zu verbinden, insbesondere zu verschweißen, so dass wenigstens der aktive innere Bereich und Zuführleitungen für wenigstens ein Prozessmedium der Brennstoffzelle ohne zusätzlichen Einsatz von Dichtelementen mediumdicht ausgeführt ist.The fact that the bipolar plate is formed in the edge region of the electrically insulating material in the form of the plastic, it is z. B. in a particularly advantageous manner, the edge regions of two bipolar plates to form a fuel cell materially connected to each other, in particular to weld, so that at least the active inner region and supply lines for at least one process medium of the fuel cell is made medium-tight without additional use of sealing elements.
Zudem ist mittels des elektrisch isolierenden Randbereiches eine Isolierwirkung der Bipolarplatte erzielbar.In addition, an insulating effect of the bipolar plate can be achieved by means of the electrically insulating edge region.
Besonders bevorzugt ist das elektrisch leitfähige Material, aus dem der innere Bereich besteht, aus Kunststoff, welcher einen Anteil von Kohlenstoff aufweist, gebildet, wodurch die elektrische Leitfähigkeit des inneren Bereiches der Bipolarplatte realisierbar ist.Particularly preferably, the electrically conductive material, of which the inner region consists of plastic, which has a proportion of carbon, is formed, whereby the electrical conductivity of the inner region of the bipolar plate can be realized.
Die Brennstoffzelle ist mittels der Bipolarplatten vollständig aus Kunststoff ausgeführt, wodurch es möglich ist, die im Vergleich kostenintensiven Edelmetalle als Bestandteil der Bipolarplatte vergleichsweise einfach und ohne großen Aufwand mittels Verbrennens zu separieren und zu recyceln.The fuel cell is completely made of plastic by means of the bipolar plates, which makes it possible comparatively easy to separate and recycle by comparison the cost-intensive precious metals as part of the bipolar plate by means of burning and without much effort.
Dabei kann die Bipolarplatte aus einem Hybridbauteil oder aus zwei Halbplatten gebildet sein.In this case, the bipolar plate can be formed from a hybrid component or from two half-plates.
Ausführungsbeispiele der Erfindung werden im Folgenden anhand von Zeichnungen näher erläutert.Embodiments of the invention are explained in more detail below with reference to drawings.
Dabei zeigen:Showing:
Einander entsprechende Teile sind in allen Figuren mit den gleichen Bezugszeichen versehen.Corresponding parts are provided in all figures with the same reference numerals.
Bei den Halbplatten
Die Bipolarplatte
Ein erster offener Bereich
Ein zweiter offener Bereich
Zwischen den beiden Halbplatten
An den Membranen
In
Zwischen den einzelnen Bipolarplatten
Zwischen dem jeweiligen Randbereich B2 einer Bipolarplatte
Die Bipolarplatten
Dazu ist der innere Bereich B1 aus einem thermoplastischen Kunststoff gebildet, welcher einen vergleichsweise geringen Anteil von Kohlenstoff in Form von Kohlenstoffnanoröhren aufweist. Dabei sind dem Kunststoff Kohlenstoffnanoröhren beigemengt, so dass die elektrische Leitfähigkeit im inneren Bereich B1 der Bipolarplatte
Mittels des elektrisch isolierenden Randbereiches B2 der Bipolarplatte
Eine Zuführung der Medien zum inneren Bereich B1 der Bipolarplatte
Eine solch mögliche Überkreuzmedienführung erfolgt im Allgemeinen durch die Zuführöffnungen
Mittels des aus thermoplastischem Kunststoff gebildeten Randbereiches B2 der Bipolarplatte
Der elektrisch isolierende Randbereich B2 umläuft den aktiven inneren Bereich B1, in welchem die Kanalstruktur
Der Stromfluss S erfolgt über den inneren Bereich B1 von Membran
Dabei zeigen die
Dadurch, dass der Randbereich B2 der jeweiligen Bipolarplatte
In
In einem ersten Verfahrensschritt V1 wird der elektrisch leitfähige Bereich
Nach der Herstellung der elektrisch leitfähigen Bereiche
In einem dritten Verfahrensschritt V3 werden die beiden Halbplatten
In einem ersten Verfahrensschritt V1 wird der innere Bereich B1 der Bipolarplatte
in einem an den ersten Verfahrensschritt V1 anschließenden zweiten Verfahrensschritt V2 wird ein erster elektrisch isolierender Randbereich
In
Bei der dritten Ausführungsform entspricht der erste Verfahrensschritt V1 dem ersten Verfahrensschritt V1 gemäß der ersten Ausführungsform nach
In einem zweiten Verfahrensschritt V2 werden die beiden im ersten Verfahrensschritt V1 hergestellten elektrisch leitfähigen Bereiche
Darauffolgend wird in einem vierten Verfahrensschritt V4 der fehlende zweite elektrisch isolierende Randbereich
In
In einem ersten Verfahrensschritt V1 wird der innere Bereich B1 der Bipolarplatte
In einem zweiten Verfahrensschritt V2 werden die beiden elektrisch isolierenden Randbereiche
Im darauffolgenden vierten Verfahrensschritt V4 werden die aneinander befestigten elektrisch isolierenden Randbereiche
In einem ersten Verfahrensschritt V1 wird der elektrisch leitfähige Bereich
In einem dritten Verfahrensschritt V3 werden die elektrisch isolierenden Randbereiche
In
Bei allen Ausführungsformen der Verfahren zur Herstellung der Bipolarplatte
Eine Überkreuzmedienführung innerhalb der Bipolarplatte
Zudem ist die Bipolarplatte
Weiterhin ist es mittels des vereinfachten Aufbaus der Bipolarplatte
Darüber hinaus handelt es sich bei den Kohlenstoffnanoröhren um einen vergleichsweise kostengünstigen Bestandteil zur Herstellung der elektrischen Leitfähigkeit im inneren Bereich B1 der Bipolarplatte
Durch den elektrisch isolierenden Randbereich B2 der Bipolarplatte
Auch ist es möglich, eine mit Kunststoff eingerahmte Membran
Ferner kann eine Gestaltungsfreiheit bei urgeformten, z. B. gegossenen Teilen v. a. hinsichtlich der Medienführung innerhalb der Bipolarplatte
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 11
- Bipolarplattebipolar
- 1.11.1
- Halbplattehalf board
- 1.1.11.1.1
- elektrisch leitfähiger Bereichelectrically conductive area
- 1.1.21.1.2
- zweiter elektrisch isolierender Randbereichsecond electrically insulating edge region
- 1.21.2
- Halbplattehalf board
- 1.2.11.2.1
- elektrisch leitfähiger Bereichelectrically conductive area
- 1.2.21.2.2
- erster elektrisch isolierender Randbereichfirst electrically insulating edge region
- 1.31.3
- Zuführöffnungfeed
- 1.41.4
- Auslassöffnungoutlet
- 22
- Kanalstrukturchannel structure
- 2.12.1
- erster offener Bereichfirst open area
- 2.22.2
- zweiter offener Bereichsecond open area
- 2.32.3
- wabenförmige Aussparunghoneycomb-shaped recess
- 33
- Membranmembrane
- 44
- Brennstoffzellenstapelfuel cell stack
- 55
- Dichtelementsealing element
- B1B1
- innerer Bereichinner area
- B2B2
- Randbereichborder area
- V1V1
- erster Verfahrensschrittfirst process step
- V2V2
- zweiter Verfahrensschrittsecond process step
- V3V3
- dritter Verfahrensschrittthird process step
- V4V4
- vierter Verfahrensschrittfourth process step
- V5V5
- fünfter Verfahrensschrittfifth process step
- SS
- Stromflusscurrent flow
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 10160706 A1 [0002] DE 10160706 A1 [0002]
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011120802A DE102011120802A1 (en) | 2011-12-10 | 2011-12-10 | Plastic bipolar plate for fuel cell, has inner region formed from electrically conductive material, and peripheral region formed from electrically insulating material such as thermoplastic resin |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011120802A DE102011120802A1 (en) | 2011-12-10 | 2011-12-10 | Plastic bipolar plate for fuel cell, has inner region formed from electrically conductive material, and peripheral region formed from electrically insulating material such as thermoplastic resin |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102011120802A1 true DE102011120802A1 (en) | 2013-06-13 |
Family
ID=48464587
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE102011120802A Ceased DE102011120802A1 (en) | 2011-12-10 | 2011-12-10 | Plastic bipolar plate for fuel cell, has inner region formed from electrically conductive material, and peripheral region formed from electrically insulating material such as thermoplastic resin |
Country Status (1)
Country | Link |
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DE (1) | DE102011120802A1 (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012024753A1 (en) * | 2012-12-19 | 2014-06-26 | Eisenhuth Gmbh & Co. Kg | Frame with integrated bipolar plate for electrochemical reactors, consists of electrically conductive bipolar plate(s) of thermoformable carbon-polymer composite material with thermoplastic polymer providing liquid-tight connection |
CN105814725A (en) * | 2013-09-23 | 2016-07-27 | 洛克希德马丁尖端能量存储有限公司 | Bipolar plate design with non-conductive picture frame |
DE102016218096A1 (en) | 2016-09-21 | 2018-03-22 | Thyssenkrupp Ag | Filling a polymer electrolyte membrane fuel cell with cooling water |
US10109879B2 (en) | 2016-05-27 | 2018-10-23 | Lockheed Martin Energy, Llc | Flow batteries having an electrode with a density gradient and methods for production and use thereof |
US10147957B2 (en) | 2016-04-07 | 2018-12-04 | Lockheed Martin Energy, Llc | Electrochemical cells having designed flow fields and methods for producing the same |
EP3444884A1 (en) | 2017-08-17 | 2019-02-20 | FRAUNHOFER-GESELLSCHAFT zur Förderung der angewandten Forschung e.V. | Electrically conductive contact plate for electrochemical cells, electrochemical cell with such a contact plate and method for the production thereof |
US10381674B2 (en) | 2016-04-07 | 2019-08-13 | Lockheed Martin Energy, Llc | High-throughput manufacturing processes for making electrochemical unit cells and electrochemical unit cells produced using the same |
US10403911B2 (en) | 2016-10-07 | 2019-09-03 | Lockheed Martin Energy, Llc | Flow batteries having an interfacially bonded bipolar plate-electrode assembly and methods for production and use thereof |
US10418647B2 (en) | 2015-04-15 | 2019-09-17 | Lockheed Martin Energy, Llc | Mitigation of parasitic reactions within flow batteries |
US10573899B2 (en) | 2016-10-18 | 2020-02-25 | Lockheed Martin Energy, Llc | Flow batteries having an electrode with differing hydrophilicity on opposing faces and methods for production and use thereof |
US10581104B2 (en) | 2017-03-24 | 2020-03-03 | Lockheed Martin Energy, Llc | Flow batteries having a pressure-balanced electrochemical cell stack and associated methods |
US11005113B2 (en) | 2015-08-19 | 2021-05-11 | Lockheed Martin Energy, Llc | Solids mitigation within flow batteries |
US11777128B1 (en) | 2022-05-09 | 2023-10-03 | Lockheed Martin Energy, Llc | Flow battery with a dynamic fluidic network |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10160706A1 (en) | 2001-12-11 | 2003-06-26 | Schunk Kohlenstofftechnik Gmbh | Process for producing a plate and plate |
US20100047650A1 (en) * | 2006-09-29 | 2010-02-25 | Honda Motor Co., Ltd. | Separator for fuel cell, single cell unit for fuel cell, short stack unit for fuel cell, and production methods of separator for fuel cell and cell unit (single cell unit or short stack unit) for fuel cell |
-
2011
- 2011-12-10 DE DE102011120802A patent/DE102011120802A1/en not_active Ceased
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10160706A1 (en) | 2001-12-11 | 2003-06-26 | Schunk Kohlenstofftechnik Gmbh | Process for producing a plate and plate |
US20100047650A1 (en) * | 2006-09-29 | 2010-02-25 | Honda Motor Co., Ltd. | Separator for fuel cell, single cell unit for fuel cell, short stack unit for fuel cell, and production methods of separator for fuel cell and cell unit (single cell unit or short stack unit) for fuel cell |
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012024753A1 (en) * | 2012-12-19 | 2014-06-26 | Eisenhuth Gmbh & Co. Kg | Frame with integrated bipolar plate for electrochemical reactors, consists of electrically conductive bipolar plate(s) of thermoformable carbon-polymer composite material with thermoplastic polymer providing liquid-tight connection |
CN105814725A (en) * | 2013-09-23 | 2016-07-27 | 洛克希德马丁尖端能量存储有限公司 | Bipolar plate design with non-conductive picture frame |
EP3050147A4 (en) * | 2013-09-23 | 2017-06-07 | Lockheed Martin Advanced Energy Storage, LLC | Bipolar plate design with non-conductive picture frame |
EP3514873A1 (en) * | 2013-09-23 | 2019-07-24 | Lockheed Martin Energy, LLC | Bipolar plate design with non-conductive picture frame |
US10418647B2 (en) | 2015-04-15 | 2019-09-17 | Lockheed Martin Energy, Llc | Mitigation of parasitic reactions within flow batteries |
US11005113B2 (en) | 2015-08-19 | 2021-05-11 | Lockheed Martin Energy, Llc | Solids mitigation within flow batteries |
US10147957B2 (en) | 2016-04-07 | 2018-12-04 | Lockheed Martin Energy, Llc | Electrochemical cells having designed flow fields and methods for producing the same |
US11165085B2 (en) | 2016-04-07 | 2021-11-02 | Lockheed Martin Energy, Llc | High-throughput manufacturing processes for making electrochemical unit cells and electrochemical unit cells produced using the same |
US10381674B2 (en) | 2016-04-07 | 2019-08-13 | Lockheed Martin Energy, Llc | High-throughput manufacturing processes for making electrochemical unit cells and electrochemical unit cells produced using the same |
US10109879B2 (en) | 2016-05-27 | 2018-10-23 | Lockheed Martin Energy, Llc | Flow batteries having an electrode with a density gradient and methods for production and use thereof |
DE102016218096A1 (en) | 2016-09-21 | 2018-03-22 | Thyssenkrupp Ag | Filling a polymer electrolyte membrane fuel cell with cooling water |
US10403911B2 (en) | 2016-10-07 | 2019-09-03 | Lockheed Martin Energy, Llc | Flow batteries having an interfacially bonded bipolar plate-electrode assembly and methods for production and use thereof |
US10573899B2 (en) | 2016-10-18 | 2020-02-25 | Lockheed Martin Energy, Llc | Flow batteries having an electrode with differing hydrophilicity on opposing faces and methods for production and use thereof |
US11444286B2 (en) | 2016-10-18 | 2022-09-13 | Lockheed Martin Energy, Llc | Flow batteries having an electrode with differing hydrophilicity on opposing faces and methods for production and use thereof |
US10581104B2 (en) | 2017-03-24 | 2020-03-03 | Lockheed Martin Energy, Llc | Flow batteries having a pressure-balanced electrochemical cell stack and associated methods |
US11056707B2 (en) | 2017-03-24 | 2021-07-06 | Lockheed Martin Energy, Llc | Flow batteries having a pressure-balanced electrochemical cell stack and associated methods |
DE102017007718A1 (en) | 2017-08-17 | 2019-02-21 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Electrically conductive contact plate for electrochemical cells, electrochemical cell with such a contact plate and method for their preparation |
EP3444884A1 (en) | 2017-08-17 | 2019-02-20 | FRAUNHOFER-GESELLSCHAFT zur Förderung der angewandten Forschung e.V. | Electrically conductive contact plate for electrochemical cells, electrochemical cell with such a contact plate and method for the production thereof |
US11777128B1 (en) | 2022-05-09 | 2023-10-03 | Lockheed Martin Energy, Llc | Flow battery with a dynamic fluidic network |
US11916272B2 (en) | 2022-05-09 | 2024-02-27 | Lockheed Martin Energy, Llc | Flow battery with a dynamic fluidic network |
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