EP1794825A2 - Hochtemperatur-brennstoffzellenanlage und verfahren zur herstellung von kontaktierungselementen für eine derartige brennstoffzellenanlage - Google Patents
Hochtemperatur-brennstoffzellenanlage und verfahren zur herstellung von kontaktierungselementen für eine derartige brennstoffzellenanlageInfo
- Publication number
- EP1794825A2 EP1794825A2 EP05799047A EP05799047A EP1794825A2 EP 1794825 A2 EP1794825 A2 EP 1794825A2 EP 05799047 A EP05799047 A EP 05799047A EP 05799047 A EP05799047 A EP 05799047A EP 1794825 A2 EP1794825 A2 EP 1794825A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel cell
- cell system
- temperature fuel
- ceramic
- contacting element
- 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.)
- Withdrawn
Links
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
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/241—Grouping of fuel cells, e.g. stacking of fuel cells with solid or matrix-supported electrolytes
- H01M8/2425—High-temperature cells with solid electrolytes
- H01M8/243—Grouping of unit cells of tubular or cylindrical configuration
-
- 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
- H01M8/0247—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the form
-
- 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
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/12—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte
- H01M2008/1293—Fuel cells with solid oxide electrolytes
-
- 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
- H01M8/023—Porous and characterised by the material
- H01M8/0241—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
- H01M8/0247—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the form
- H01M8/0252—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the form tubular
-
- 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
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49108—Electric battery cell making
Definitions
- the invention relates to a high-temperature fuel cell layer of a plurality of individual fuel cells, which are contacted for electrical parallel and / or series connection with each other, including flexible and electrically conductive contacting elements are used.
- the invention also relates to a method for the production of contacting elements for such a fuel cell system.
- contact strips are used for electrically contacting solid ceramic fuel cells in series or parallel connection.
- the contact strips are applied, for example, along a tubular fuel cell on the interconnector already present there and connect in each case the cathode and anode of two individual superimposed fuel cells (electrical Rei ⁇ henscrien).
- Several adjacent fuel cells can be electrically connected to each other for parallel connection by a contact strip (electrical parallel connection).
- Known contacting elements which are currently used for the electrical connection of tubular high-temperature fuel cells, consist of nickel felt strips which consist of a multiplicity of fine nickel fibers which are only a few 10 ⁇ m thick and thus are both flexible and compressible , The nickel felt strips are in the compressed state about 6 mm wide and 3 to 4 mm high.
- the height of the contact strip is given during assembly by the distance that must be bridged between two cells by the contact. This is described in detail, for example, in EP 0 320 087 B1 and EP 0 536 909 A1 described.
- the nickel felts are glued onto the interconnector on the one hand and the anode on the other hand with a nickel paste.
- nickel felts are time-consuming and associated with many production steps. This results in high costs.
- An undesirable feature of these contact strips is also that the nickel felts can resinterse in long-term operation, and thus the cell contact becomes rigid due to loss of flexibility and elasticity. This can have the consequence that, in the event of large temperature fluctuations, the contacts break off and the power of the fuel cell system is thereby lost.
- the subject matter of the invention is such a contacting element in which the electrical contact is formed from a metallic mesh, knitted fabric or expanded metal in which a ceramic inner core is incorporated.
- a ceramic felt, netting, knitted or ceramic cord is embedded as the inner core.
- the inner core is flexible, which means the intended purpose is particularly advantageous.
- the Ke ramikfilz preferably consists of alumina (Al 2 O 3), ge ⁇ optionally with proportions of silicon oxide (SiO 2) or so-called. Molit.
- the material for the metallic sheath is of nickel or a nickel alloy is used in ⁇ be known manner.
- the ceramic felt acts as a flexible buffer between the cells in the operating state of the SOFC and in thermally induced deformations of the cell bundle.
- the ceramic core in contrast to the nickel mesh at the high operating temperatures of the fuel cell of about 1000 0 C can not sinter. Furthermore, the ceramic core between the metal connectors as Versinterungsschutz the nickel components in Kunststoff ⁇ strip and additionally as a flexible spacer wir ⁇ ken. The electric current is carried by the electrically conductive Ni- disgust, the electrically insulating ceramic core, however, has no Stromleitfunktion.
- Figure 4 shows an embodiment with a rigid Keramiksee ⁇ le
- FIG. 5 and FIG. 6 show two alternative constructions of contacting elements
- Figure 7 shows an arrangement of six tubular fuel cells
- Figure 8 cell system an alternative design to figure 2.3 specifically for a so-called HPD (High Power p_ensity) fuel ⁇ .
- HPD High Power p_ensity
- the individual cells are connected in series, for example, in series connection. Therefore, to each of the cathode of a first cell can be contacted with the anode ei ⁇ ner second cell.
- a so-called interconnector 15 is located on the cathode tube 10 in a narrow region which is not covered by the electrolyte 11 or by the anode 12.
- a separate contact element 20 is made on the interconnector 15 in order to make contact Cell 10 applied to the next cell 10 ⁇ .
- the cathode tube having a thickness of 2 mm.
- the cathode tubes are about 1800 mm long and closed at ei ⁇ nem end.
- the interconnector 15 is in the form of a narrow strip with a thickness of about 100 ⁇ m on the cathode tube 10.
- the electrolyte 11 and the anode 12 likewise have a thickness in the range of about 100 ⁇ m.
- the contact 20 For the proper connection of two fuel cell tubes 10 and 10 ⁇ the contact 20 must have a thickness of about 3 mm. Since the fuel cell arrangement is carried out at temperatures in the range of 1000 0 C, the materials must their expansion coefficients are matched to each particular loading faced to ensure a sufficient stability. This does not apply to the ceramic components in relation to nickel. Therefore, the nickel contacts commonly used in the prior art must be to some degree elastic and flexible, which is made possible by their structure, eg, the knitted fabric.
- a contact 200 which includes a Kera ⁇ premix felt 201 as a core and is provided with a nickel casing 202nd
- the ceramic felt is advantageously made of aluminum oxide (Al 2 O 3) with additions of silicon oxide (SiO 2) or molit.
- the nickel protection 202 arranged around the felt 201 can be, for example, a net or a knitted fabric.
- Such wires can also consist of a nickel alloy, in particular a two-component alloy with nickel as the base metal and a metallic minor component. But also multi-component alloys with several secondary components are possible.
- nickel alloy As secondary components for the nickel alloy, in particular dere the metals copper (Cu), chromium (Cr), cobalt (Co) or titanium (Ti) or their oxides in question.
- Cu copper
- Cr chromium
- Co cobalt
- Ti titanium
- the total content of minor components should not exceed 30% by weight.
- the ceramic core 301 is made of a solid ceramic part 303, which is covered on both sides by a flexible ceramic layer 302, in particular the felt according to FIG.
- FIGS. 5 and 6 show two alternative constructions of contacting elements 500 and 600.
- an Al 2 O 3-FUZ 601 can be completely wound around the nickel knit / net 602.
- dage- gen forms the network 602 as a molding receptacles for the Keramikfilze 601, 601 ⁇ .
- Contacting elements are better suited for contacting two tubular fuel cells than the contact strips used in the prior art. In particular, even with frequent temperature fluctuations, undesired sintering, which is usually associated with material embrittlement and thereby deteriorates the elasticity properties, can be effectively avoided.
- FIG. 7 shows an arrangement of six tubular fuel cells which are connected in pairs in succession. It is the fuel cell 1 to 6 is indicated ⁇ . Between the fuel cells, a compact contact structure 700 is shown, which consists of individual, suitable lateral lateral position positioned internal Al 2 O 3 parts 701, which is surrounded by a nickel network 303. Thus, in terms of area, a series connection of the cells 1/4, 2/5 and 3/6 and a parallel connection of the cells 1/2/3 and 4/5/6 are realized.
- FIG. 8 shows two so-called HPD fuel cells 8 and 9.
- HPD fuel cells consist of a flat sintered body, which can occupy a flat or wavy surface, in which, for example, six or eight individual inner tubes are incorporated. Due to the be ⁇ vorzugten fuel gas management on the one hand and air gas guide ande hand, here is a very high output Leis ⁇ tung (High Power Density) results compared to individual tubes.
- HPD fuel cells 8 and 9 can be interconnected electrically and mechanically stably and mechanically stably. Even with long-term operation at high temperatures no disturbances occur.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
- Inert Electrodes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004047733A DE102004047733A1 (de) | 2004-09-30 | 2004-09-30 | Hochtemperatur-Brennstoffzellenanlage und Verfahren zur Herstellung von Kontaktierungselementen für eine derartige Brennstoffzellenanlage |
PCT/EP2005/054888 WO2006035048A2 (de) | 2004-09-30 | 2005-09-28 | Hochtemperatur-brennstoffzellenanlage und verfahren zur herstellung von kontaktierungselementen für eine derartige brennstoffzellenanlage |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1794825A2 true EP1794825A2 (de) | 2007-06-13 |
Family
ID=35966338
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05799047A Withdrawn EP1794825A2 (de) | 2004-09-30 | 2005-09-28 | Hochtemperatur-brennstoffzellenanlage und verfahren zur herstellung von kontaktierungselementen für eine derartige brennstoffzellenanlage |
Country Status (4)
Country | Link |
---|---|
US (1) | US7906250B2 (de) |
EP (1) | EP1794825A2 (de) |
DE (1) | DE102004047733A1 (de) |
WO (1) | WO2006035048A2 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20120007771A (ko) * | 2010-07-15 | 2012-01-25 | 삼성에스디아이 주식회사 | 고체산화물 연료전지 |
JP6022368B2 (ja) * | 2013-01-31 | 2016-11-09 | 日本特殊陶業株式会社 | 燃料電池 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4874678A (en) | 1987-12-10 | 1989-10-17 | Westinghouse Electric Corp. | Elongated solid electrolyte cell configurations and flexible connections therefor |
US4791035A (en) * | 1987-12-10 | 1988-12-13 | Westinghouse Electric Corp. | Cell and current collector felt arrangement for solid oxide electrochemical cell combinations |
EP0536909B1 (de) * | 1991-10-11 | 1998-03-11 | Westinghouse Electric Corporation | Festoxidbrennstoffzellengenerator |
JPH05174852A (ja) * | 1991-12-17 | 1993-07-13 | Yoshida Kogyo Kk <Ykk> | 固体電解質燃料電池用導電性接続部材 |
US5766789A (en) * | 1995-09-29 | 1998-06-16 | Energetics Systems Corporation | Electrical energy devices |
US6562496B2 (en) * | 2000-05-01 | 2003-05-13 | Delphi Technologies, Inc. | Integrated solid oxide fuel cell mechanization and method of using for transportation industry applications |
US6737182B2 (en) | 2001-06-18 | 2004-05-18 | Delphi Technologies, Inc. | Heated interconnect |
US20030096147A1 (en) * | 2001-11-21 | 2003-05-22 | Badding Michael E. | Solid oxide fuel cell stack and packet designs |
-
2004
- 2004-09-30 DE DE102004047733A patent/DE102004047733A1/de not_active Withdrawn
-
2005
- 2005-09-28 US US11/663,987 patent/US7906250B2/en not_active Expired - Fee Related
- 2005-09-28 EP EP05799047A patent/EP1794825A2/de not_active Withdrawn
- 2005-09-28 WO PCT/EP2005/054888 patent/WO2006035048A2/de active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2006035048A2 * |
Also Published As
Publication number | Publication date |
---|---|
DE102004047733A1 (de) | 2006-04-06 |
US20070264539A1 (en) | 2007-11-15 |
WO2006035048A3 (de) | 2006-06-08 |
WO2006035048A2 (de) | 2006-04-06 |
US7906250B2 (en) | 2011-03-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69838679T2 (de) | Elektrische leitfähigkeit in einer brennstoffzellen-anordnung | |
DE602004004037T2 (de) | Elektrische Verbindungsträgerstrukturen für Festoxidbrennstoffzellen aus einer Kombination von Nickelstreckmetall und Nickelschaum | |
EP0424732A1 (de) | Stromübertragungselemente für stapelförmig angeordnete Hochtemperatur-Brennstoffzellen und Verfahren zu deren Herstellung | |
DE19705874C2 (de) | Stromkollektor für SOFC-Brennstoffzellenstapel | |
EP2154742B1 (de) | Brennstoffzelleneinheit und Verfahren zum Herstellen einer elektrisch leitfähigen Verbindung zwischen einer Elektrode und einer Bipolarplatte | |
DE4237602A1 (de) | Hochtemperatur-Brennstoffzellen-Stapel und Verfahren zu seiner Herstellung | |
DE4016157A1 (de) | Vorrichtung zur umwandlung von chemischer energie in elektrische energie mittels in serie geschalteter flacher, ebener hochtemperatur-brennstoffzellen | |
EP0410159A1 (de) | Stromkollektor für Hochtemperatur-Brennstoffzelle | |
EP0452737A1 (de) | Brennstoffzellenanordnung und Verfahren zu deren Herstellung | |
EP2363910B1 (de) | Brennstoffzellensystem mit verbesserter elektrischer Kontaktierung | |
DE102005005116A1 (de) | Interkonnektor für Hochtemperaturbrennstoffzellen | |
EP0423448A1 (de) | Stromkollektor zur Stromleitung zwischen stapelförmig angeordneten Hochtemperatur-Brennstoffzellen und Verfahren zu dessen Herstellung | |
WO2006035048A2 (de) | Hochtemperatur-brennstoffzellenanlage und verfahren zur herstellung von kontaktierungselementen für eine derartige brennstoffzellenanlage | |
DE4307666C1 (de) | Stromanschlußelement für Festelektrolyt-Brennstoffzellen, Verfahren zu seiner Herstellung und dessen Verwendung | |
EP0440968A1 (de) | Vorrichtung zur Erzielung einer möglichst gleichmässigen Temperaturverteilung auf der Oberfläche einer plattenförmigen keramischen Hochtemperatur-Brennstoffzelle | |
EP1794824A2 (de) | Hochtemperatur-brennstoffzellenanlage und verfahren zur herstellung von kontaktierungselementen f]r eine derartige brennstoffzellenanlage | |
DE69909471T2 (de) | Elektrochemische zelle mit gesinterter anode aus metallteilchen und oxiden | |
DE102008049463A1 (de) | Hilfsmittel zur elektrischen Kontaktierung von Hochtemperatur-Brennstoffzellen und Verfahren zu dessen Herstellung | |
DE19649457C1 (de) | Hochtemperatur-Brennstoffzelle und Verfahren zum Herstellen einer Hochtemperatur-Brennstoffzelle | |
DE102009038693B4 (de) | Oxidationsbeständiger Verbundleiter und Herstellungsverfahren für den Verbundleiter sowie Brennstoffzellensystem | |
DE102013212390A1 (de) | Hochtemperaturzellensystem mit Kontaktelementvertiefungen | |
WO2001004981A1 (de) | Oxidationsgeschützte elektrische kontaktierung auf der brenngasseite der hochtemperatur-brennstoffzelle | |
EP2195869B1 (de) | Brennstoffzellen-anlage und verfahren zu deren herstellung | |
DE102022108748A1 (de) | Interkonnektor-elektrochemische Reaktionseinzelzelle-Verbundkörper und elektrochemischer Reaktionszellenstapel | |
DE102020118857A1 (de) | Vielschichtkondensator |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20070314 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): CH DE DK FR GB IT LI |
|
DAX | Request for extension of the european patent (deleted) | ||
RBV | Designated contracting states (corrected) |
Designated state(s): CH DE DK FR GB IT LI |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SIEMENS ENERGY, INC. |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SIEMENS AKTIENGESELLSCHAFT |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SIEMENS AKTIENGESELLSCHAFT |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20160401 |