WO1991014293A2 - Sodium/sulphur cell - Google Patents
Sodium/sulphur cell Download PDFInfo
- Publication number
- WO1991014293A2 WO1991014293A2 PCT/GB1991/000371 GB9100371W WO9114293A2 WO 1991014293 A2 WO1991014293 A2 WO 1991014293A2 GB 9100371 W GB9100371 W GB 9100371W WO 9114293 A2 WO9114293 A2 WO 9114293A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cell
- sodium
- sulphur
- aluminium
- cathodic reaction
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/36—Accumulators not provided for in groups H01M10/05-H01M10/34
- H01M10/39—Accumulators not provided for in groups H01M10/05-H01M10/34 working at high temperature
- H01M10/3909—Sodium-sulfur cells
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/661—Metal or alloys, e.g. alloy coatings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- This invention relates to a sodium/sulphur cell.
- Both primary and secondary batteries of dry alkaline type are known, as are secondary batteries of lead acid type.
- a solid electrolyte - generally beta alumina - separates two liquid electrodes, namely liquid sulphur and liquid sodium electrodes.
- Such a sodium/sulphur cell is shown in the drawing which is a perspective view of the cell with part broken away.
- the cell comprises a case 1 of, for example steel, in the form of a right circular cylinder and containing a solid electrolyte cup 2 of beta alumina, the cup 2 containing a sodium electrode 3, while a space between the case 1 and the cup 2 contains a sulphur electrode 4.
- the cell is maintained at a temperature of between 300°C and 400°C such that the sodium and sulphur electrodes 3 and 4 are in liquid form.
- the open end of the cup 2 is closed by an insulating disc 5 of alpha alumina, while the case 1 is closed by an annular steel disc 6.
- the case 1 serves as a terminal for the sulphur electrode 4, while the sodium electrode 3 contains an elongate metal current collector 8 which extends axially of the case 1 out through the disc 5 where it is connected to a centre terminal disc 7 mounted on the disc 5, the necessary connections being made by welding.
- sulphur is essentially electronically non-conducting a means of providing electronic conduction to all parts of the sulphur electrode from the case 1 has to be provided, and this is generally achieved by forming the sulphur electrode 4 as a carbon fibre mat impregnated with the sulphur.
- beta alumina acts as a selective ion filter.
- sodium ions are transported through the beta alumina electrolyte cup 2 from the sodium electrode 3, to the sulphur electrode 4, and there combine with the sulphur to form some species of sodium polysulphide.
- the sodium polysulphide has to be transported away from the surface of the cup 2 and replaced with fresh sulphur.
- an inert material such as porcelain, enamel, or relatively inert molybdenum metal.
- the inert coating does not completely cover the additive material, an area of the surface thereof being left uncovered in dependence upon the required rate of release of the additive material into the cathodic reaction of the cell.
- a sodium/sulphur cell has a cathodic reaction region including a member of aluminium/silicon alloy.
- a particular advantage of the cell of the invention is that the aluminium/silicon alloy member does not require an inert coating to control the rate of corrosion thereof, since the use of silicon in the alloy reduces the rate of corrosion of the aluminium to an acceptable level due to the formation of a stable, tenacious, reaction product on the surface of the aluminium of the member.
- a preferred composition for the aluminium/silicon member is:- Aluminium 90 - 99.5%
- the aluminium/silicon alloy member can be provided in the form of a wire and will serve as an inactive electrical current carrying member in the cathodic reaction region of the cell, and may be connected to a current carrying member of the cell.
- aluminium/silicon alloy member can be provided as a coating on a wall or walls of the cathodic reaction region of the cell.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP91505815A JPH05505903A (en) | 1990-03-15 | 1991-03-08 | sodium/sulfur battery |
GB9217376A GB2256742A (en) | 1990-03-15 | 1992-08-14 | Sodium/sulphur cell |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9005803.3 | 1990-03-15 | ||
GB909005803A GB9005803D0 (en) | 1990-03-15 | 1990-03-15 | Sodium/sulphur cell |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1991014293A2 true WO1991014293A2 (en) | 1991-09-19 |
WO1991014293A3 WO1991014293A3 (en) | 1991-10-31 |
Family
ID=10672650
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB1991/000371 WO1991014293A2 (en) | 1990-03-15 | 1991-03-08 | Sodium/sulphur cell |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0519985A1 (en) |
JP (1) | JPH05505903A (en) |
CA (1) | CA2077765A1 (en) |
GB (1) | GB9005803D0 (en) |
WO (1) | WO1991014293A2 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3615239A1 (en) * | 1986-05-06 | 1987-11-12 | Bbc Brown Boveri & Cie | Electrochemical storage cell |
EP0257649A2 (en) * | 1986-08-29 | 1988-03-02 | Hitachi, Ltd. | Sodium-sulfur electric cell and process for manufacturing the same |
US4767684A (en) * | 1987-08-19 | 1988-08-30 | Ford Motor Company | Method of chargeability improvement and reduced corrosion for sodium-sulfur cells |
-
1990
- 1990-03-15 GB GB909005803A patent/GB9005803D0/en active Pending
-
1991
- 1991-03-08 EP EP91906068A patent/EP0519985A1/en not_active Withdrawn
- 1991-03-08 CA CA002077765A patent/CA2077765A1/en not_active Abandoned
- 1991-03-08 JP JP91505815A patent/JPH05505903A/en active Pending
- 1991-03-08 WO PCT/GB1991/000371 patent/WO1991014293A2/en not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3615239A1 (en) * | 1986-05-06 | 1987-11-12 | Bbc Brown Boveri & Cie | Electrochemical storage cell |
EP0257649A2 (en) * | 1986-08-29 | 1988-03-02 | Hitachi, Ltd. | Sodium-sulfur electric cell and process for manufacturing the same |
US4767684A (en) * | 1987-08-19 | 1988-08-30 | Ford Motor Company | Method of chargeability improvement and reduced corrosion for sodium-sulfur cells |
Non-Patent Citations (2)
Title |
---|
Corrosion Science, vol. 26, no. 5, May 1986, Pergamon Journals Ltd, (GB), R.P. Tischer et al.: "Candidate materials for the sulfur electrode current collector - II. Aluminium and its alloys", pages 371-375 * |
Proceedings of the Symposium on Sodium-Sulfur Batteries, vol. 87-5,1986, The Electrochemical Society, Inc., (Pennington, NJ, US), A.P. Brown et al.: "The corrosion of metals and alloys by sodium polysulfide melts at 350oC", pages 237-245, * |
Also Published As
Publication number | Publication date |
---|---|
JPH05505903A (en) | 1993-08-26 |
EP0519985A1 (en) | 1992-12-30 |
GB9005803D0 (en) | 1990-05-09 |
WO1991014293A3 (en) | 1991-10-31 |
CA2077765A1 (en) | 1991-09-16 |
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