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Title: Corrosion resistant PEM fuel cell

Patent ·
OSTI ID:870920
 [1];  [2];  [3];  [4];  [5]
  1. Troy, MI
  2. Okemos, MI
  3. West Bloomfield, MI
  4. Bloomfield, MI
  5. Orion Township, Oakland County, MI
+ Show Author Affiliations

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.

Research Organization:
General Motors LLC, Detroit, MI (United States)
DOE Contract Number:
AC02-90CH10435
Assignee:
General Motors Corporation (Detroit, MI)
Patent Number(s):
US 5624769
OSTI ID:
870920
Country of Publication:
United States
Language:
English

References (12)

Electrochemically measured porosity of magnetron sputtered TiN films deposited at various substrate orientations journal November 1986
The dependence of hardness and corrosion protection power of ion- beam-assisted deposition TiN coatings on the ion beam impact angle journal October 1993
A study of the corrosion behavior of TiN films journal February 1985
A study of defects in sputtered TiN coatings by electrochemical polarization
  • Telama, A.; Mäntylä, T.; Kettunen, P.
  • Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, Vol. 4, Issue 6 https://doi.org/10.1116/1.573659
journal November 1986
Epitaxial growth of TiN films on (100) silicon substrates by laser physical vapor deposition journal September 1992
The microstructure of sputter‐deposited coatings journal November 1986
Corrosion behaviour of TiN films obtained by plasma-assisted chemical vapour deposition journal April 1994
Corrosion studies with hard coating-substrate systems journal November 1992
Morphology of ion-plated titanium and aluminum films deposited at various substrate temperatures journal November 1978
Corrosion Testing of ZrN and TiN Films journal January 1991
Growth and properties of single crystal TiN films deposited by reactive magnetron sputtering
  • Johansson, B. O.; Sundgren, J. ‐E.; Greene, J. E.
  • Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, Vol. 3, Issue 2 https://doi.org/10.1116/1.573255
journal March 1985
Study of the behaviour in acidic solution of titanium and TiN coatings obtained by cathodic sputtering journal December 1987

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Related Subjects

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/