Patents by Inventor Marcel Touboul

Marcel Touboul has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for preparing mixed amorphous vanadium oxides and their use as electrodes in reachargeable lithium cells
    Patent number: 5700598
    Abstract: A method for preparing an amorphous ternary lithiated vanadium metal oxide of the formula Li.sub.x M.sub.y V.sub.z O.sub.(x+5z+ny)/2, where M is a metal, 0<x.ltoreq.3, 0<y.ltoreq.3, 1.ltoreq.z.ltoreq.4, and n=2 or 3, comprising the steps of creating an aqueous solution of at least one metavanadate salt selected from the group consisting of NH.sub.4 VO.sub.3 and NaVO.sub.3, and a nitrate salt of the formula M(NO.sub.3).sub.n containing a large excess of a lithium salt; heating the solution; adding a sufficient amount of a base to obtain a suitable pH; and precipitating the amorphous lithiated vanadium metal oxide. A rechargeable lithiated intercalation battery cell comprising a positive electrode, a negative electrode, and an electrolyte, wherein the active material of the negative electrode is an amorphous ternary lithiated vanadium metal oxide of the formula Li.sub.x M.sub.y V.sub.z O.sub.(x+5z+ny)/2 or an amorphous binary non-lithiated vanadium metal oxide of the formula M.sub.y V.sub.z O.sub.
    Type: Grant
    Filed: July 11, 1996
    Date of Patent: December 23, 1997
    Assignee: Bell Communications Research, Inc.
    Inventors: Sophie Denis, Francois Orsini, Jean-Marie Tarascon, Marcel Touboul