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:
Apr. 08, 1986
Filed:
Mar. 25, 1985
Applicant:
Inventor:
Yves Jumel, Poitiers, FR;
Assignee:
Saft, S.A., Romainville, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M / ;
U.S. Cl.
CPC ...
429194 ; 429196 ;
Abstract
A high specific energy electrochemical cell comprises: a negative active material (4) based on an alkali metal or on an alkaline-earth metal; a separator (8); a non-aqueous liquid electrolyte; and a positive electrode comprising a solid active mass (5). The positive mass is provided, on its electrolyte side, with a porous and electron conductive metal covering (12) which does not participate in the electrochemical reaction, whose thickness is of the order of a few microns, and which is in contact with the metal portions serving as a positive current collector. The covering greatly reduces the initial impedance of the cell.