Sodium-sulfur cell with method of constructing the sulfur electrode
US4269909A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 1980 |
| Grant date | May 26, 1981 |
| Priority date | — |
| Expiry date | Jan 18, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/4911
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A sodium-sulfur cell is disclosed herein along with a method of constructing its sulfur electrode. The cell includes means containing a supply of sodium, an elongated housing joined at one end with sodium containing means, a beta-alumina electrolyte tube located within and extending from the joined end of the housing so as to define a compartment within the housing around the tube. A mixture including sulfur and an electrically conductive filler is disposed within the compartment and forms the cells sulfur electrode. In constructing this electrode, sufficient space is initially provided within the cell compartment around the beta-alumina electrolyte tube to allow for expansion of the sulfur when the latter converts from its solidified state during initial storage to its molten state during operation of the cell, thereby minimizing the possibility of damage to the electrolyte tube as a result of this expansion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.