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Chemically modified graphite for electrochemical cells

United States Patent

5,756,062
May 26, 1998
View the Complete Patent at the US Patent & Trademark Office
This invention relates to chemically modified graphite particles: (a) that are useful in alkali metal-containing electrode of a electrochemical cell comprising: (i) the electrode, (ii) a non-aqueous electrolytic solution comprising an organic aprotic solvent which solvent tends to decompose when the electrochemical cell is in use, and an electrically conductive salt of an alkali metal, and (iii) a counterelectrode; and (b) that are chemically modified with fluorine, chlorine, iodine or phosphorus to reduce such decomposition. This invention also relates to electrodes comprising such chemically modified graphite and a binder and to electrochemical cells containing such electrodes.
Greinke; Ronald Alfred (Medina, OH), Lewis; Irwin Charles (Strongsville, OH)
Ucar Carbon Technology Corporation (
08/ 654,660
May 29, 1996
GOVERNMENT CONTRACT The work described and claimed in this patent application was conducted under Cooperative Agreement No. DE-FCO2-91CE50336 with the Department of Energy of the United States of America.