Integrated carbon/insulator structure and method for fabricating same
A thin, integrated carbon/insulator structure, and a method for fabricating same, for use in a primary electrochemical cell are described. A quantity of a wet carbon slurry material including a mixture of carbon black, water and/or isopropyl alcohol, and a binder such as finely-divided ''teflon'' in suspension, is deposited onto a porous fiberglass substrate and rolled to a prescribed thickness. The rolling operation causes a portion of the slurry material to diffuse into the surface of the porous fiberglass substrate and permanently adhere to and unite with a surface portion of the fiberglass substrate in an integrated, interlocking fashion. The fiberglass substrate having the layer of carbon slurry material integrated therewith is then dried to cause the layer of carbon slurry material to dry and shrink to the form of a layer of carbon plaque having a network of cracks produced therethrough in a random pattern as a result of the shrinkage during drying. The layer of carbon plaque at this stage represents an aggregation of porous carbon globules. The layer of carbon plaque is re-rolled to close cracks at the upper surface of the layer while simultaneously establishing a desired thickness for the layer. After curing the above arrangement to increase adherence of the carbon globules to each other and to the fiberglass substrate, an integrated carbon/insulator structure of a desired size and configuration for use in a primary electrochemical cell can be cut out from the abovedescribed arrangement.
- Assignee:
- GTE Products Corp
- Patent Number(s):
- US 4296187
- OSTI ID:
- 5775307
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
250903* -- Energy Storage-- Batteries-- Materials
Components
& Auxiliaries
BINDERS
CARBON
ELECTRICAL EQUIPMENT
ELECTRICAL INSULATORS
ELEMENTS
EQUIPMENT
FABRICATION
FIBERGLASS
FLUORINATED ALIPHATIC HYDROCARBONS
HALOGENATED ALIPHATIC HYDROCARBONS
MATERIALS
NONMETALS
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
PLASTICS
POLYETHYLENES
POLYMERS
POLYOLEFINS
POLYTETRAFLUOROETHYLENE
POROSITY
PRIMARY BATTERIES
SUBSTRATES
SYNTHETIC MATERIALS
TEFLON