Carbon corrosion in phosphoric acid fuel cells

Conference · Mon Aug 01 04:00:00 EDT 1983 · Proc. - Electrochem. Soc.; (United States)

OSTI ID:5726639

Christner, L

The hostile environment in phosphoric acid fuel cells can be tolerated by a very limited number of materials. It is fortunate that an inexpensive material such as carbon is relatively resistant to 190/sup 0/C acid at 0.6V to 0.9V. Carbon corrosion rates can vary by several orders of magnitude depending on its preparation and the acid concentration it experiences. Conditions of water vapor pressure and component wetting in fuel cells can exist when deleterious corrosion of the cathode and bipolar separator plate occurs. Until recently there has been what appeared to be conflicting sets of data. In this paper a unifying theory is presented which must still be tested, but explains all observations known to this author.

• Research Organization: Energy Research Corporation, Danbury, Connecticut
• OSTI ID: 5726639
• Report Number(s): CONF-8308116-
• Conference Information: Journal Name: Proc. - Electrochem. Soc.; (United States) Journal Volume: 84-5
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
300503 -- Fuel Cells-- Materials
Components
& Auxiliaries
300505* -- Fuel Cells-- Electrochemistry
Mass Transfer & Thermodynamics
ACID ELECTROLYTE FUEL CELLS
CARBON
CATHODES
CORROSION RESISTANCE
DIRECT ENERGY CONVERTERS
ELECTROCHEMICAL CELLS
ELECTRODES
ELEMENTS
FLUIDS
FUEL CELLS
GASES
HYDROGEN COMPOUNDS
INORGANIC ACIDS
MATERIALS
NONMETALS
PERFORMANCE
PHOSPHORIC ACID
TEMPERATURE DEPENDENCE
VAPORS
WATER VAPOR