Chemistry: electrical current producing apparatus – product – and – Having magnetic field feature
Reexamination Certificate
2005-10-11
2005-10-11
Maples, John S. (Department: 1745)
Chemistry: electrical current producing apparatus, product, and
Having magnetic field feature
C429S006000, C429S006000
Reexamination Certificate
active
06953631
ABSTRACT:
A method for operating a polymer electrolyte membrane fuel cell at temperatures below the freezing point of water and an apparatus thereof are provided to prevent damage and performance degradation of the membrane-electrode assemblies. Non-humidified gas flows for several seconds before temperature of the polymer electrolyte membrane fuel cell falls below the freezing temperature of water when operation of the polymer electrolyte membrane fuel cell stops. Simultaneously, anode of the polymer electrolyte membrane fuel cell is filled with a solution having a low freezing point to prevent the temperature of a polymer electrolyte membrane fuel cell falling below the freezing point of water due to the lower ambient temperature in the winter. When the polymer electrolyte membrane fuel cell is restarted, the cell performance is not degraded reflecting that the present invention stably preserves the fuel cell.
REFERENCES:
patent: 5798186 (1998-08-01), Fletcher et al.
patent: 6068941 (2000-05-01), Fuller et al.
patent: 6103410 (2000-08-01), Fuller et al.
patent: 6479177 (2002-11-01), Roberts et al.
patent: 2002/0119357 (2002-08-01), Baldauf et al.
Ha Heung Yong
Hong Seong-Ahn
Kim Soo Whan
Ko Jae Jun
Lee Jong Hyun
Hyundai Motor Company
Korea Institute of Science and Technology
Maples John S.
Morgan & Lewis & Bockius, LLP
LandOfFree
Method and apparatus for operating polymer electrolyte... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for operating polymer electrolyte..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for operating polymer electrolyte... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3454778