Integrated carbon/insulator structure and method for fabricating same
US4377033A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 6, 1981 |
| Grant date | Mar 22, 1983 |
| Priority date | — |
| Expiry date | Apr 6, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49115
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A thin, integrated carbon/insulator structure, and a method for fabricating same, for use in a primary electrochemical cell. 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 …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.