Insertion compounds of graphite with improved performances and e

Details Insertion compounds of graphite with improved performances and e Insertion compounds of graphite with improved performances and e

1984-05-21

1986-04-22

Hearn, Brian E.

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

429218, 423415R, H01M 402, C01B 3100

Patent

active

045842523

ABSTRACT:
The present invention relates to insertion compounds with improved performances for electrochemical applications. They are characterized in that they are obtained from a graphite with a specific surface area of at least 100 m.sup.2 /g, and a granulometry at most equal to 4 .mu.m. The graphite oxide or the graphite-NiCl.sub.2 first stage obtained from such a graphite is used as constituting agent of the cathode of a lithium battery and it gives to same excellent characteristics. The graphite oxide performances may further be improved by preparing it by double oxidation of a graphite having any specific surface area and the granulometry is of the order of the .mu.m, as shown by FIG. 2 which represents the intensiostatic discharge curves of the lithium batteries the cathode of which contains the graphite oxide.

REFERENCES:
patent: 3876444 (1975-04-01), McKee
patent: 4041220 (1977-08-01), Armand
patent: 4091083 (1978-05-01), Hirschvogel et al.
patent: 4145483 (1979-03-01), Bonnemay et al.
patent: 4329216 (1982-05-01), DuBois
Chemical Abstracts: 100:71254, 100:54599, 94:216434, 99:165723.

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