Title:
SODIUM-SULFUR BATTERY
Document Type and Number:
WIPO Patent Application WO/2020/153125
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a safe sodium-sulfur battery, wherein the contact between molten sodium and molten sulfur is reduced, thereby reducing the amount of heat generated by a reaction and suppressing igniting even if a partition wall is broken. The sodium-sulfur battery has: a bag-shaped first sheet member 8 which is disposed in a negative electrode chamber 40, is formed of a carbon fiber sheet, and has a bottomed upper end opening; and an aggregate 85 composed of alumina particles and disposed in a space surrounded by the first sheet member 8 and the outer circumferential surface of a sodium container 4. Molten sulfur flowing into the negative electrode chamber 40 from a breaking point of a partition wall 3 is blocked by the first sheet member 8 contacting the inner circumferential surface of the partition wall 3 in the negative electrode chamber 40, and reacts only with a slight amount of molten sodium present in the gap between the inner circumferential surface of the partition wall 3 and the first sheet member 8, with a large amount of the reaction being suppressed, so that igniting does not occur.
Inventors:
OHKAWA HIROSHI (JP)
Application Number:
PCT/JP2020/000311
Publication Date:
July 30, 2020
Filing Date:
January 08, 2020
Export Citation:
Assignee:
KK JINKOSHIGEN KENKYUSHO (JP)
International Classes:
H01M10/39; H01M4/38; H01M50/443
Foreign References:
| JP2017073250A | 2017-04-13 | |||
| JP2017103197A | 2017-06-08 | |||
| JPS5037371B1 | 1975-12-02 | |||
| JPH0680593B2 | 1994-10-12 | |||
| JPS57145278A | 1982-09-08 | |||
| JPH01211869A | 1989-08-25 | |||
| JPS54102524A | 1979-08-13 | |||
| JPS5478435A | 1979-06-22 | |||
| JP2005197138A | 2005-07-21 |
Attorney, Agent or Firm:
OHKAWA, Hiroshi (JP)
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