Method of fabricating a carbon--polytetrafluoroethylene electrode support

Patent · Tue Feb 19 04:00:00 EDT 1974

OSTI ID:7339735

Baker, B; Klein, M

A method for the manufacture of an electrically conductive substrate for use as an electrode support in a fuel cell is described comprising the steps of: (a) blending a quantity of carbon with dry powdered polytetrafluoroethylene in a lubricant to form a homogeneous mixture, said polytetrafluoroethylene constituting from 6 percent to no more than 32 percent of the combined weight of said carbon and said polytetrafluoroethylene; (b) filtering lubricant from said blend to form a filtered mixture; (c) subjecting said filtered mixture to rolling forces effecting thickness reduction thereof, thereby forming a sheet of fibrillated polytetrafluoroethylene containing carbon and lubricant; and (d) removing the remainder of said lubricant from said sheet.

• Assignee: Energy Research Corp.
• Patent Number(s): US 3935029
• OSTI ID: 7339735
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
300503* -- Fuel Cells-- Materials
Components
& Auxiliaries
CARBON
DIRECT ENERGY CONVERTERS
DISPERSIONS
ELECTROCHEMICAL CELLS
ELECTRODES
ELEMENTS
FABRICATION
FILTRATION
FLUORINATED ALIPHATIC HYDROCARBONS
FUEL CELLS
HALOGENATED ALIPHATIC HYDROCARBONS
MIXTURES
NONMETALS
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
PLASTICS
POLYETHYLENES
POLYMERS
POLYOLEFINS
POLYTETRAFLUORETHYLENE
SEPARATION PROCESSES
SUBSTRATES
TEFLON