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Chemically modified graphite for electrochemical cells

Patent ·
OSTI ID:871569
 [1];  [2]
  1. Medina, OH
  2. Strongsville, OH
+ Show Author Affiliations

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.

Research Organization:
US ADVANCED BATTERY CONSORTIUM
DOE Contract Number:
FC02-91CE50336
Assignee:
Ucar Carbon Technology Corporation ()
Patent Number(s):
US 5756062
OSTI ID:
871569
Country of Publication:
United States
Language:
English

References (12)

The dependence of the performance of Li-C intercalation anodes for Li-ion secondary batteries on the electrolyte solution composition journal December 1994
Reactivity of Lithium Intercalated into Petroleum Coke in Carbonate Electrolytes journal February 1996
The Correlation Between the Surface Chemistry and the Performance of Li-Carbon Intercalation Anodes for Rechargeable ‘Rocking-Chair’ Type Batteries journal January 1994
The Li1+xMn2O4/C rocking-chair system: a review journal June 1993
The Study of Electrolyte Solutions Based on Ethylene and Diethyl Carbonates for Rechargeable Li Batteries journal January 1995
Mechanism Leading to Irreversible Capacity Loss in Li Ion Rechargeable Batteries journal January 1995
Filming mechanism of lithium-carbon anodes in organic and inorganic electrolytes journal April 1995
Electrochemical and spectroscopic studies of carbon electrodes in lithium battery electrolyte systems journal March 1993
Anodic oxidation of propylene carbonate and ethylene carbonate on graphite electrodes journal April 1995
Heat Transfer Phenomena in Lithium/Polymer-Electrolyte Batteries for Electric Vehicle Application journal January 1993
Charge‐Discharge Characteristics of Mesophase‐Pitch‐Based Carbon Fibers for Lithium Cells journal February 1993
Effects of Crown Ether Addition to Organic Electrolytes on the Cycling Behavior of the TiS[sub 2] Electrode journal January 1987

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Related Subjects

/423/204/429/
alkali
alkali metal
alkali metal-containing
aprotic
aprotic solvent
aqueous electrolytic
binder
cell
cell comprising
cells
cells contain
cells containing
chemically
chemically modified
chlorine
comprising
conductive
conductive salt
containing
counterelectrode
decompose
decomposition
electrically
electrically conductive
electrochemical
electrochemical cell
electrochemical cells
electrode
electrodes
electrodes comprising
electrolytic
electrolytic solution
fluorine
graphite
graphite particles
ii
iii
iodine
metal
metal-containing
modified
modified graphite
non-aqueous
non-aqueous electrolytic
organic
organic aprotic
particles
phosphorus
reduce
relates
salt
solution
solution comprising
solvent
tends
useful