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Title: Catalytic bipolar interconnection plate for use in a fuel cell

A bipolar interconnection plate for use between adjacent fuel cell units in a stacked fuel cell assembly. Each plate is manufactured from an intermetallic composition, examples of which include NiAl or Ni.sub.3 Al which can catalyze steam reforming of hydrocarbons. Distributed within the intermetallic structure of the plate is a ceramic filler composition. The plate includes a first side with gas flow channels therein and a second side with fuel flow channels therein. A protective coating is applied to the first side, with exemplary coatings including strontium-doped or calcium-doped lanthanum chromite. To produce the plate, Ni and Al powders are combined with the filler composition, compressed at a pressure of about 10,000-30,000 psi, and heated to about 600.degree.-1000.degree. C. The coating is then applied to the first side of the completed plate using liquid injection plasma deposition or other deposition techniques.
Inventors:
 [1]
  1. (Idaho Falls, ID)
Issue Date:
OSTI Identifier:
870328
Assignee:
Lockheed Idaho Technologies Company (Idaho Falls, ID) INEEL
Patent Number(s):
US 5496655
Contract Number:
AC07-76ID01570; AC07-94ID13223
Research Org:
Idaho National Engineering and Environmental Laboratory (INEEL), Idaho Falls, ID (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
catalytic; bipolar; interconnection; plate; fuel; cell; adjacent; units; stacked; assembly; manufactured; intermetallic; composition; examples; nial; catalyze; steam; reforming; hydrocarbons; distributed; structure; ceramic; filler; gas; flow; channels; therein; protective; coating; applied; exemplary; coatings; including; strontium-doped; calcium-doped; lanthanum; chromite; produce; powders; combined; compressed; pressure; 10; 000-30; 000; psi; heated; 600; degree; -1000; completed; liquid; injection; plasma; deposition; techniques; channels therein; fuel cell; protective coating; adjacent fuel; flow channels; flow channel; gas flow; steam reforming; cell assembly; deposition techniques; doped lanthanum; plasma deposition; lanthanum chromite; fuel flow; liquid injection; cell unit; deposition technique; ceramic filler; cell units; intermetallic composition; injection plasma; interconnection plate; bipolar interconnection; /429/