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Title: Corrosion resistant PEM fuel cell

The present invention contemplates a PEM fuel cell having electrical contact elements (including bipolar plates/septums) comprising a titanium nitride coated light weight metal (e.g., Al or Ti) core, having a passivating, protective metal layer intermediate the core and the titanium nitride. The protective layer forms a barrier to further oxidation/corrosion when exposed to the fuel cell's operating environment. Stainless steels rich in CR, Ni, and Mo are particularly effective protective interlayers.
Inventors:
 [1];  [2];  [3];  [4];  [5]
  1. (Troy, MI)
  2. (Okemos, MI)
  3. (West Bloomfield, MI)
  4. (Bloomfield, MI)
  5. (Orion Township, Oakland County, MI)
Issue Date:
OSTI Identifier:
875301
Assignee:
General Motors Corporation (Detroit, MI) OSTI
Patent Number(s):
US RE37284
Contract Number:
AC02-90CH10435
Research Org:
GENERAL MOTORS CORP
Country of Publication:
United States
Language:
English
Subject:
corrosion; resistant; pem; fuel; cell; contemplates; electrical; contact; elements; including; bipolar; plates; septums; comprising; titanium; nitride; coated; light; weight; metal; core; passivating; protective; layer; intermediate; forms; barrier; oxidation; exposed; operating; environment; stainless; steels; rich; particularly; effective; interlayers; operating environment; nitride coated; fuel cell; bipolar plates; protective interlayer; protective layer; light weight; stainless steels; corrosion resistant; titanium nitride; metal layer; electrical contact; stainless steel; bipolar plate; pem fuel; particularly effective; protective metal; layer forms; resistant pem; coated light; contact elements; weight metal; including bipolar; /429/