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Silver manganese oxide electrodes for lithium batteries

United States Patent

May 9, 2006
View the Complete Patent at the US Patent & Trademark Office
Argonne National Laboratory - Visit the Technology Development and Commercialization Website
This invention relates to electrodes for non-aqueous lithium cells and batteries with silver manganese oxide positive electrodes, denoted Ag.sub.xMnO.sub.y, in which x and y are such that the manganese ions in the charged or partially charged electrodes cells have an average oxidation state greater than 3.5. The silver manganese oxide electrodes optionally contain silver powder and/or silver foil to assist in current collection at the electrodes and to improve the power capability of the cells or batteries. The invention relates also to a method for preparing Ag.sub.xMnO.sub.y electrodes by decomposition of a permanganate salt, such as AgMnO.sub.4, or by the decomposition of KMnO.sub.4 or LiMnO.sub.4 in the presence of a silver salt.
Thackeray; Michael M. (Naperville, IL), Vaughey; John T. (Elmhurst, IL), Dees; Dennis W. (Downers Grove, IL)
The University of Chicago (Chicago, IL)
10/ 338,175
January 7, 2003
CONTRACTUAL ORIGIN OF THE INVENTION The United States Government has rights in this invention pursuant to Contract No. W-31-109-ENG-38 between the U.S. Department of Energy (DOE) and The University of Chicago representing Argonne National Laboratory.