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Title: Compacted carbon for electrochemical cells

Patent ·
OSTI ID:871181
 [1];  [2]
  1. Medina, OH
  2. Strongsville, OH
+ Show Author Affiliations

This invention provides compacted carbon that is useful in the electrode of an alkali metal/carbon electrochemical cell of improved capacity selected from the group consisting of: (a) coke having the following properties: (i) an x-ray density of at least 2.00 grams per cubic centimeters, (ii) a closed porosity of no greater than 5%, and (iii) an open porosity of no greater than 47%; and (b) graphite having the following properties: (i) an x-ray density of at least 2.20 grams per cubic centimeters, (ii) a closed porosity of no greater than 5%, and (iii) an open porosity of no greater than 25%. This invention also relates to an electrode for an alkali metal/carbon electrochemical cell comprising compacted carbon as described above and a binder. This invention further provides an alkali metal/carbon electrochemical cell comprising: (a) an electrode as described above, (b) a non-aqueous electrolytic solution comprising an organic aprotic solvent and an electrolytically conductive salt and an alkali metal, and (c) a counterelectrode.

Research Organization:
US ADVANCED BATTERY CONSORTIUM
DOE Contract Number:
FC02-91CE50336
Assignee:
UCAR Carbon Technology Corporation (Danbury, CT)
Patent Number(s):
US 5677082
OSTI ID:
871181
Country of Publication:
United States
Language:
English

References (6)

Porosity in Carbons and Graphites book January 1989
Electrodic characteristics of various carbon materials for lithium rechargeable batteries journal July 1995
Historical development of secondary lithium batteries journal August 1994
Grading Aggregates - I. - Mathematical Relations for Beds of Broken Solids of Maximum Density journal September 1931
Heat Transfer Phenomena in Lithium/Polymer-Electrolyte Batteries for Electric Vehicle Application journal January 1993
X-ray studies on the carbonization and graphitization of acenaphthylene and bifluorenyl journal April 1965

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Related Subjects

compacted
carbon
electrochemical
cells
provides
useful
electrode
alkali
metal
cell
improved
capacity
selected
consisting
coke
following
properties
x-ray
density
00
grams
cubic
centimeters
ii
closed
porosity
iii
47
graphite
20
25
relates
comprising
described
binder
non-aqueous
electrolytic
solution
organic
aprotic
solvent
electrolytically
conductive
salt
counterelectrode
cubic centimeter
aprotic solvent
electrolytic solution
electrochemical cells
alkali metal
electrochemical cell
solution comprising
cell comprising
aqueous electrolytic
non-aqueous electrolytic
organic aprotic
compacted carbon
conductive salt
improved capacity
/429/423/