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:
Sep. 02, 1980
Filed:
Sep. 25, 1978
Applicant:
Inventors:
Walter L Roth, Schenectady, NY (US);
Stephan P Mitoff, Clifton Park, NY (US);
Assignee:
Electric Power Research Institute, Inc., Palo Alto, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
H01M / ;
U.S. Cl.
CPC ...
429104 ; 429193 ;
Abstract
In a sodium sulfur cell including a beta-alumina separator between the sodium and sulfur compartments, high surface area gettering means, e.g., beta-alumina or beta'-alumina, for potassium and alkali earth metal ion impurities in the sodium to protect the separator. The gettering means is disposed in the sodium container in the form of particles or a continous porous shell or porous solid plug adjacent to the separator.