The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 26, 1982
Filed:
Jul. 07, 1981
Applicant:
Inventors:
Michael L Wright, Allestree, GB;
Michael D Hames, Spondon, GB;
Assignee:
Chloride Silent Power Limited, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M / ;
U.S. Cl.
CPC ...
429104 ; 429126 ; 429193 ;
Abstract
In a sodium sulphur cell having beta alumina solid electrolyte material separating an anodic region containing sodium from a cathodic region, the surface of the electrolyte exposed to the sodium is pretreated with a first metal, conveniently lead, which will form an alloy with sodium and the anodic region contains a second metal, e.g. titanium or aluminium which will react with sodium oxide to form a sodium oxide compound of the second metal or an oxide thereof. The combined effect of these features gives a significant improvement in preventing resistance rise of the cell on discharge.