Skip to Content
Find More Like This
Return to Search

Intermetallic negative electrodes for non-aqueous lithium cells and batteries

United States Patent

May 4, 2004
View the Complete Patent at the US Patent & Trademark Office
Argonne National Laboratory - Visit the Technology Development and Commercialization Website
Copper-tin Electrodes Improve Capacity and Cycle Life for Lithium Batteries
A method of operating an electrochemical cell is disclosed. The cell has an intermetallic negative electrode of Cu.sub.6-x M.sub.x Sn.sub.5, wherein x is .ltoreq.3 and M is one or more metals including Si and a positive electrode containing Li in which Li is shuttled between the positive electrode and the negative electrode during charge and discharge to form a lithiated intermetallic negative electrode during charge. The voltage of the electrochemical cell is controlled during the charge portion of the charge-discharge cycles so that the potential of the lithiated intermetallic negative electrode in the fully charged electrochemical cell is less than 0.2 V but greater than 0 V versus metallic lithium.
Thackeray; Michael M. (Naperville, IL), Vaughey; John T. (Elmhurst, IL), Johnson; Christopher S. (Naperville, IL), Fransson; Linda M. L. (Uppsala, SE), Edstrom; Ester Kristina (Vange, SE), Henriksen; Gary (Downers Grove, IL)
The University of Chicago (Chicago, IL)
10/ 008,885
November 8, 2001
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.