Contact between metal can and carbon/graphite fibers in sodium/sulfur cells
AssigneeElectric Power Research Institute, Inc.
InventorManfred Wolfgang Breiter
Life of this patent
Estimating the term…
Abstract
In sodium/sulfur batteries, electrical contact is maintained between the sulfur which is nonconductive and an aluminum container or other external electrical conductor, by having electrical contact between the sulfur and conductive carbon fibers and/or mat which contact a molybdenum or chromium coated surface of an aluminum conductor. A terminal portion of the aluminum conductor is uncoated and is employed for making electrical contact to the external conductor. A battery configuration of particular interest has a central .beta.-alumina tube which may serve as the sulfur or sodium container surrounded by sodium or sulfur respectively.
Claims10
A conductor for transferring electricity to and from sulfur or mixtures of sulfur and sodium polysulfides comprising a mat of conducting carbon or graphite in electrically conducting contact with the chromium or molybdenum surface of a chromium or molybdenum coated aluminum substrate.
Dependencies are inferred from the claim text.