EP0963615B1 - Pile a combustible et utilisation d'alliages a base de fer pour la production de piles a combustible - Google Patents

Pile a combustible et utilisation d'alliages a base de fer pour la production de piles a combustible Download PDF

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Publication number
EP0963615B1
EP0963615B1 EP98904005A EP98904005A EP0963615B1 EP 0963615 B1 EP0963615 B1 EP 0963615B1 EP 98904005 A EP98904005 A EP 98904005A EP 98904005 A EP98904005 A EP 98904005A EP 0963615 B1 EP0963615 B1 EP 0963615B1
Authority
EP
European Patent Office
Prior art keywords
weight
content
fuel cell
iron
construction
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.)
Revoked
Application number
EP98904005A
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German (de)
English (en)
Other versions
EP0963615A1 (fr
Inventor
Regina Hornung
Manfred Waidhas
Siegfried Birkle
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
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Siemens AG
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Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7818016&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0963615(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP0963615A1 publication Critical patent/EP0963615A1/fr
Application granted granted Critical
Publication of EP0963615B1 publication Critical patent/EP0963615B1/fr
Anticipated expiration legal-status Critical
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten

Definitions

  • the invention relates to a fuel cell which has a membrane electrode assembly, two current collectors and / or one Cell frame or a bipolar plate comprises, at least a solid construction part with low weight and high corrosion resistance of the material used.
  • Cell frames, bipolar plates, collector plates are known to date and / or other solid structural parts of fuel cells, especially of low temperature fuel cells like the PEM fuel cell, made of graphite or others Carbon materials are made.
  • the thickness of, for example made from it is due to the incorporated gas and liquid distribution structure at least 2 to 2.5 mm and thus results despite less Density of the material a comparatively high weight and large volume of constructed fuel cells.
  • EP 0 629 015 A1 describes materials for bipolar or Collector plates revealed the following alloys or metals: Aluminum, titanium or alloys thereof, zircon, Niobium, tantalum or alloys from one of these five Elements. It also discloses that these elements can be passivated by protective electrically insulating oxides can and that alternatively to the above metals the plates are also made of more corrosion-resistant materials such as graphite, high-alloy, stainless steel or nickel-chrome alloys could be. More detailed information on the composition well suited alloys from these metals are not yet known.
  • the carbon materials are too heavy for mass production and too expensive to manufacture cell frames, current collectors and / or bipolar plates etc.
  • the metals in turn have too high susceptibility to corrosion and exhibit, because of their Passivation due to oxide layer formation too high losses during Electricity transport within the fuel cell.
  • the invention relates to a fuel cell which comprises a membrane electrode assembly, two current collectors and / or a cell frame and / or a bipolar plate, the material at least one of the solid structural parts being made of an Fe-based material which consists of the alloys with the following Compositions is selected: Content of C 0 - 0.06% by weight Si content 0 - 2% by weight Cr 8.25 - 46.5% by weight Mo 1.25 - 14.0% by weight Ni content 2.25 - 40.5% by weight Cu content 0 - 4.0% by weight Mn content 0 - 13% by weight Content of N 0.02 - 1% by weight Content of Nb 0 - 0.5% by weight P content 0 - 0.09% by weight Content of S 0 - 0.06% by weight Fe content remaining 100% by weight.
  • Fe is a basic material based on iron Main component of the alloy used according to the invention, where the designation main ingredient does not have percentages is definable, but relative to the other components is seen.
  • the present invention also relates to its use an alloy based on iron with one of the above compositions in the construction of a Fuel cell.
  • the Fe-based material for the current collectors and / or the cell frame and / or the bipolar plate is preferably selected from the following alloys: Content of C 0 - 0.03% by weight Si content 0 - 1% by weight Cr 16.5 - 25.0% by weight Mo 2.5 - 7.0% by weight Ni content 4.5 - 26.0% by weight Cu content 0 - 2.0% by weight Mn content 0 - 6.5% by weight Content of N 0.04 - 0.5% by weight Content of Nb 0 - 0.25% by weight P content 0 - 0.045% by weight Content of S 0 - 0.03% by weight Fe content missing remainder to 100 wt .-%
  • the invention is the Fe-based material for that at least a solid structural part selected from an alloy, whose active sum ⁇ 26.9 and particularly preferably one whose active sum is> 30.
  • the Fe base material additionally surface-treated to the To reduce contact resistance.
  • the treatment e.g. with titanium nitride.
  • the surface treatment can also be coated with conductive polymers Plastics can be realized. Basically all known Surface treatments to reduce contact resistance with the same or improved corrosion resistance find application here.
  • “fixed construction part” e.g. Cell borders, Current collectors and / or collector, bipolar, termination and / or Pole plates or another construction part, such as a frame element, etc. understood that makes sense a material that is dimensionally stable under normal conditions is. It can be square, round, tubular and other structural parts, which in turn any have embossed or otherwise formed surface structures can act, in which then either cooling medium or reaction medium flows or into the membrane electrode assembly is clamped. Finally, it can also be a sealing element his. An axial channel or a tie rod can also be practical or part of an axial channel or a tie rod be obtained from the material used in accordance with the invention.
  • Fe-based materials For use as plates with gas and / or liquid distribution structure have the used according to the invention Fe-based materials a small thickness of 20 to 300 microns, preferred 50 to 200 ⁇ m and particularly preferably approximately 100 microns. For use as pole or end plates or other Applications may be completely different thicknesses the plate expedient. Depending on the solid construction part, for which the alloy is used according to the invention increases the weight reduction achieved by the invention of the fuel cell of course with the thickness of the part.
  • Alloy 1.4539 (material numbers) Content of C 0 - 0.02% by weight Cr 19.0 - 21.0% by weight Mo 4.0 - 5.0% by weight Ni content 24.0 - 26.0% by weight Cu content 1.0 - 2.0% by weight Content of N 0.04 - 0.15% by weight Fe content missing remainder to 100 wt .-%
  • Alloy 1.4462 Content of C 0 - 0.03% by weight Cr 21.0 - 23.0% by weight Mo 2.5 - 3.5% by weight Ni content 4.5 - 6.5% by weight Content of N 0.08 - 0.2% by weight Fe content missing remainder to 100 wt .-%
  • Alloy 1.4439 Content of C 0 - 0.03% by weight Cr 16.5 - 18.5% by weight Mo 4.0 - 5.0% by weight Ni content 12.5 - 14.5% by weight Content of N 0.12 - 0.22% by weight Fe content missing remainder to 100 wt .-% Alloy 1.4565: Content of
  • the materials mentioned according to the invention also have a comparatively high corrosion resistance even with direct contact of the plates and / or the Frame elements with the acidic electrolyte. Furthermore they have a good thermoforming quality and are therefore easy to form. After all, they have a low contact resistance, which is further optimized by appropriate surface treatment can be.

Claims (6)

  1. Pile à combustible, qui comprend une unité membrane-électrodes, deux collecteurs de courant et/ou un cadre de pile et/ou une plaque bipolaire, la matière d'au moins l'une des parties rigides de construction étant un matériau à base de Fe qui est en un alliage ayant la composition suivante : teneur en C de 0 à 0,06 % en poids teneur en Si de 0 à 2 % en poids teneur en Cr de 8,25 à 46,5 % en poids teneur en Mo de 1,25 à 14,0 % en poids teneur en Ni de 2,25 à 40,5 % en poids teneur en Cu de 0 à 4,0 % en poids teneur en Mn de 0 à 13 % en poids teneur en N de 0,02 à 1 % en poids teneur en Nb de 0 à 0,5 % en poids teneur en P de 0 à 0,09 % en poids teneur en S de 0 à 0,06 % en poids teneur en Fe pour compléter à 100 % en poids.
  2. Pile à combustible suivant la revendication 1, dans laquelle l'alliage à base de Fe a la composition suivante : teneur en C de 0 à 0,03 % en poids teneur en Si de 0 à 1 % en poids teneur en Cr de 16,5 à 25,0 % en poids teneur en Mo de 2,5 à 7,0 % en poids teneur en Ni de 4,5 à 26,0 % en poids teneur en Cu de 0 à 2,0 % en poids teneur en Mn de 0 à 6,5 % en poids teneur en N de 0,04 à 0,5 % en poids teneur en Nb de 0 à 0,25 % en poids teneur en P de 0 à 0,045 % en poids teneur en S de 0 à 0,03 % en poids teneur en Fe pour compléter à 100 % en poids.
  3. Pile à combustible suivant l'une des revendications 1 ou 2 précédentes, dans laquelle le matériau à base de Fe a une somme active ≥26,9.
  4. Pile à combustible suivant l'une des revendications précédentes, dans laquelle le matériau à base de Fe est traité en surface.
  5. Pile à combustible suivant l'une des revendications précédentes, dans laquelle la pile à combustible est une pile à combustible PEM.
  6. Utilisation d'un alliage à base de Fe ayant la composition teneur en C de 0 à 0,06 % en poids teneur en Si de 0 à 2 % en poids teneur en Cr de 8,25 à 46,5 % en poids teneur en Mo de 1,25 à 14,0 % en poids teneur en Ni de 2,25 à 40,5 % en poids teneur en Cu de 0 à 4,0 % en poids teneur en Mn de 0 à 13 % en poids teneur en N de 0,02 à 1 % en poids teneur en Nb de 0 à 0,5 % en poids teneur en P de 0 à 0,09 % en poids teneur en S de 0 à 0,06 % en poids teneur en Fe pour compléter à 100 % en poids
       pour la construction d'une pile à combustible.
EP98904005A 1997-01-22 1998-01-07 Pile a combustible et utilisation d'alliages a base de fer pour la production de piles a combustible Revoked EP0963615B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19702119 1997-01-22
DE19702119 1997-01-22
PCT/DE1998/000027 WO1998033224A1 (fr) 1997-01-22 1998-01-07 Pile a combustible et utilisation d'alliages a base de fer pour la production de piles a combustible

Publications (2)

Publication Number Publication Date
EP0963615A1 EP0963615A1 (fr) 1999-12-15
EP0963615B1 true EP0963615B1 (fr) 2003-07-09

Family

ID=7818016

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98904005A Revoked EP0963615B1 (fr) 1997-01-22 1998-01-07 Pile a combustible et utilisation d'alliages a base de fer pour la production de piles a combustible

Country Status (10)

Country Link
US (1) US6300001B1 (fr)
EP (1) EP0963615B1 (fr)
JP (1) JP2001508589A (fr)
AT (1) ATE244933T1 (fr)
CA (1) CA2278490C (fr)
DE (1) DE59808983D1 (fr)
DK (1) DK0963615T3 (fr)
ES (1) ES2203926T3 (fr)
NO (1) NO992738D0 (fr)
WO (1) WO1998033224A1 (fr)

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US6306544B1 (en) 1999-02-25 2001-10-23 Wilson Greatbatch Ltd. Cobalt-based alloys as positive electrode current collectors in nonaqueous electrochemical cells
US20050003259A1 (en) * 1999-03-29 2005-01-06 Siemens Aktiengesellschaft Component such as a cell frame and/or a pole plate for a PEM fuel cell with a reduced contact resistance, and method for reducing the contact resistance
JP4604302B2 (ja) * 2000-02-28 2011-01-05 パナソニック株式会社 高分子電解質型燃料電池
CA2403266A1 (fr) 2000-03-15 2001-09-20 James R. Crum Alliage austenitique resistant a la corrosion
DE10039674A1 (de) * 2000-08-14 2002-03-07 Basf Ag Bipolarplatte für PEM-Brennstoffzellen
DE10057071A1 (de) * 2000-11-17 2002-05-29 Siemens Ag Brennstoffzellenanlage
US20040038104A1 (en) * 2001-04-06 2004-02-26 Qinbai Fan Low cost metal bipolar plates and current collectors for polymer electrolyte membrane fuel cells
US6723462B2 (en) 2001-04-06 2004-04-20 Gas Technology Institute Low cost metal bipolar plates and current collectors for polymer electrolyte membrane fuel cells
US6641780B2 (en) * 2001-11-30 2003-11-04 Ati Properties Inc. Ferritic stainless steel having high temperature creep resistance
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DE10261482A1 (de) * 2002-12-23 2004-07-01 Basf Ag Brennstoffzellenmodul
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SE527933C2 (sv) * 2004-05-19 2006-07-11 Sandvik Intellectual Property Värmebeständigt stål
SE528008C2 (sv) * 2004-12-28 2006-08-01 Outokumpu Stainless Ab Austenitiskt rostfritt stål och stålprodukt
US20070122304A1 (en) * 2005-11-28 2007-05-31 Ramasesha Sheela K Alloys for intermediate temperature applications, methods for maufacturing thereof and articles comprising the same
DK1873852T3 (da) * 2006-06-30 2011-06-27 Air Liquide Ledende plader til brændstofcelleelementer
JP5120799B2 (ja) * 2007-01-26 2013-01-16 独立行政法人物質・材料研究機構 固体高分子型形燃料電池のセパレータとそれに用いるステンレス鋼の製造方法
CN101694879B (zh) * 2009-10-22 2011-08-10 大连海事大学 含Mo氮化物表面改性燃料电池不锈钢双极板及制造方法
CN101859904B (zh) * 2010-06-22 2012-07-04 武汉理工大学 Fe-Ni-Cr合金燃料电池双极板的制作方法
DE102010053385A1 (de) * 2010-12-03 2012-06-21 Bayerische Motoren Werke Aktiengesellschaft Austenitischer Stahl für die Wasserstofftechnik
EP2714955B9 (fr) 2011-05-26 2021-10-27 N'Genius Technology Limited Acier inoxydable austénitique

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Also Published As

Publication number Publication date
DE59808983D1 (de) 2003-08-14
JP2001508589A (ja) 2001-06-26
WO1998033224A1 (fr) 1998-07-30
ATE244933T1 (de) 2003-07-15
NO992738L (no) 1999-06-04
US6300001B1 (en) 2001-10-09
DK0963615T3 (da) 2003-10-06
CA2278490C (fr) 2008-10-14
CA2278490A1 (fr) 1998-07-30
ES2203926T3 (es) 2004-04-16
EP0963615A1 (fr) 1999-12-15
NO992738D0 (no) 1999-06-04

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