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US 5,512,392 AGranted
Electrolytic cell using small particle graphite
AssigneeArthur D. Little, Inc.
InventorsDenis G. Fauteux, Jie Shi
Life of this patent
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Abstract
An electrolytic cell using small particle graphite and an electrolytic process wherein the electrolytic cell includes an electrode constructed with a lithium source and another electrode constructed with relatively small graphite particles. The graphite particles possess physical attributes which serve to increase the reversible capacity of the graphite beyond the known theoretical capacity of 372 mAh/g of LiC.sub.6.
Claims12
An electrolytic cell using small particle graphite comprising:
- a first electrode constructed with lithium;
- a second electrode constructed with graphite;
- means, associated with the graphite, for increasing the reversible capacity of the graphite beyond its known theoretical capacity of 372 mAh/g for LiC.sub.6 ;
- and
- an electrolyte associated with the first and second electrodes;
- the means for increasing the reversible capacity of the graphite beyond the known theoretical capacity of 372 mAh/g for LiC.sub.6 comprises utilization of graphite particles on the second electrode having active surface areas greater than 0.04 m.sup.2 /g.
3 more elements
An electrolytic cell using small particle graphite comprising:
- a first electrode constructed with lithium;
- a second electrode constructed with graphite;
- means, associated with the graphite, for increasing the reversible capacity of the graphite beyond its known theoretical capacity of 372 mAh/g for LiC.sub.6 ;
- and
- an electrolyte associated with the first and second electrodes;
- the means for increasing the reversible capacity of the graphite beyond the known theoretical capacity of 372 mAh/g for LiC.sub.6 comprises utilization of graphite particles on the second electrode having surface areas greater than 10 m.sup.2 /g.
3 more elements
An electrolytic cell using small particle graphite comprising:
- a first electrode constructed with lithium;
- a second electrode constructed with graphite;
- means, associated with the graphite, for increasing the reversible capacity of the graphite beyond its known theoretical capacity of 372 mAh/g for LiC.sub.6 ;
- and
- an electrolyte associated with the first and second electrodes;
- the means for increasing the reversible capacity of the graphite beyond the known theoretical capacity of 372 mAh/g for LiC.sub.6 comprises utilization of graphite particles on the second electrode having mean diameters less than 20.25 micrometers.
3 more elements
An electrolytic cell using small particle graphite comprising:
- a first electrode constructed with lithium;
- a second electrode constructed with graphite;
- means, associated with the graphite, for increasing the reversible capacity of the graphite beyond its known theoretical capacity of 372 mAh/g for LiC.sub.6 ;
- and
- an electrolyte associated with the first and second electrodes;
- the means for increasing the reversible capacity o the graphite beyond the known theoretical capacity of 372 mAh/g for LiC.sub.6 comprises utilization of graphite particles on the second electrode having crystalline heights less than 100 nanometers.
3 more elements
An electrolytic cell using small particle graphite comprising:
- a first electrode constructed with a lithium source;
- a second electrode constructed with graphite;
- means, associated with the graphite, for maintaining the reversible capacity of the graphite, after an initial charge is applied to the electrolytic cell, and in turn, after subsequent charge and discharge cycles to the electrolytic cell, beyond 372 mAH/g;
- and
- an electrolyte associated with the first and second electrodes;
- the means for maintaining the reversible capacity of the graphite after an initial charge is applied to the electrolytic cell comprises utilization of graphite particles on the second electrode having active surface areas greater than 0.04 m.sup.2 /g.
3 more elements
An electrolytic cell using small particle graphite comprising:
- a first electrode constructed with a lithium source;
- a second electrode constructed with graphite;
- means, associated with the graphite, for maintaining the reversible capacity of the graphite, after an initial charge is applied to the electrolytic cell, and, in turn, after subsequent charge and discharge cycles to the electrolytic cell, beyond 372 mAH/g;
- and
- an electrolyte associated with the first and second electrodes;
- the means for maintaining the reversible capacity of the graphite after an initial charge is applied to the electrolytic cell comprises utilization of graphite particles on the second electrode having surface areas greater than 10 m.sup.2 /g.
3 more elements
An electrolytic cell using small particle graphite comprising:
- a first electrode constructed with a lithium source;
- a second electrode constructed with graphite;
- means, associated with the graphite, for maintaining the reversible capacity of the graphite, after an initial charge is applied to the electrolytic cell, and, in turn, after subsequent charge and discharge cycles to the electrolytic cell, beyond 372 mAH/g;
- and
- an electrolyte associated with the first and second electrodes;
- the means for maintaining the reversible capacity of the graphite after an initial charge is applied to the electrolytic cell comprises utilization of graphite particles on the second electrode having mean diameters less than 20.25 micrometers.
3 more elements
An electrolytic cell using small particle graphite comprising:
- a first electrode constructed with a lithium source;
- a second electrode constructed with graphite;
- means, associated with the graphite, for maintaining the reversible capacity of the graphite, after an initial charge is applied to the electrolytic cell, and, in turn, after subsequent charge and discharge cycles to the electrolytic cell, beyond 372 mAH/g;
- and
- an electrolyte associated with the first and second electrodes;
- the means for maintaining the reversible capacity of the graphite after an initial charge is applied to the electrolytic cell comprises utilization of graphite particles on the second electrode having crystalline heights less than 100 nanometers.
3 more elements
Dependencies are inferred from the claim text.