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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. 6 figs.
Inventors:
; ; ; ;
Issue Date:
OSTI Identifier:
504936
Assignee:
General Motors Corp., Detroit, MI (United States) CHO; SCA: 300503; PA: EDB-97:097153; SN: 97001815608
Patent Number(s):
US 5,624,769/A/
Application Number:
PAN: 8-577,397
Contract Number:
AC02-90CH10435
Resource Relation:
Other Information: PBD: 29 Apr 1997
Research Org:
General Motors Corp
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; SOLID ELECTROLYTE FUEL CELLS; CORROSION PROTECTION; TITANIUM NITRIDES; PROTECTIVE COATINGS; STAINLESS STEELS; ALUMINIUM; TITANIUM