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

A bipolar interconnection plate is described 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--1000 C. The coating is then applied to the first side of the completed plate using liquid injection plasma deposition or other deposition techniques. 6 figs.
Inventors:
Issue Date:
OSTI Identifier:
203882
Assignee:
Lockheed Idaho Technologies Co., Idaho Falls, ID (United States) IDO; SCA: 300503; PA: EDB-96:059225; SN: 96001559472
Patent Number(s):
US 5,496,655/A/
Application Number:
PAN: 8-322,660
Contract Number:
AC07-76ID01570; AC07-94ID13223
Resource Relation:
Other Information: PBD: 5 Mar 1996
Research Org:
Lockheed Martin Idaho Tech Co; EG&G Idaho, Inc
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; BATTERY SEPARATORS; DESIGN; FUEL CELLS; STEAM REFORMER PROCESSES; CATALYSTS; INTERMETALLIC COMPOUNDS; NICKEL ALLOYS; ALUMINIUM ALLOYS; CATALYTIC EFFECTS; LANTHANUM OXIDES; CHROMIUM OXIDES; FABRICATION; POWDER METALLURGY