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:
Jun. 26, 1990
Filed:
Jun. 30, 1989
Hitachi, Ltd., Tokyo, JP;
Abstract
In a sodium-sulphur cell, liquid sodium is anodic reactant, sulphur and sodium polysulphide are cathodic reactants and sodium ions are conducted by a solid electrolyte. To increase cell capacity and improve safety, a storage region for cathodic reactants is provided away from said solid electrolyte and containing said cathodic reactants in the form of two contacting layers of immiscible liquids formed by gravitational separation. Liquid sulphur being stored does not contact the solid electrolyte. The sodium may also be stored out of contact with the electrolyte. Capillary-action means for feeding the sodium polysulphide from the two liquid layers to the cathode reaction, and for feeding sodium to the anode reaction are included.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile