Title: Electrochemical cell
Application Number: 02803142 Application Date: 2002.10.01
Publication Number: 1537339 Publication Date: 2004.10.13
Approval Pub. Date: 2006.10.04 Granted Pub. Date: 2006.10.04
International Classifi-cation: H01M4/62,C01B31/04,C01B31/00
Applicant(s) Name: Timcal AG Address:
Inventor(s) Name: M.E. Spahr
Attorney & Agent: wang yonggang
Abstract:
     Electrochemical cell, having a positive electrode comprising electrolytic manganese dioxide, chemical manganese dioxide, lithiated manganates, cobaltates or nickelates as electroactive component and graphite as a conductive additive, which is characterized 1. Electrochemical cell having a positive electrode comprising electrolytic manganese dioxide, chemical manganese dioxide, lithiated manganates, cobaltates or nickelates as electroactive component and graphite as a conductive additive, characterized in that said conductive additive comprises at least a thermally expanded graphite in its vermicular form, and wherein the initial graphite particle expansion degree of said expanded graphite in z-direction of the particle is greater than 80 times of its initial z-dimension, and preferably within the range of 200 to 500 times of its initial z-dimension.
Time: 7