Method of making spinel LI2MN204 compound

Details Method of making spinel LI2MN204 compound Method of making spinel LI2MN204 compound

1995-11-22

1997-02-11

Langel, Wayne

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

429224, C01G 4512

Patent

active

056017960

ABSTRACT:
A method of producing spinel Li.sub.2 Mn.sub.2 O.sub.4 from LiMn.sub.2 O.sub.4, lithium metal and graphite. A mixture of black LiMn.sub.2 O.sub.4, lithium metal and carbon powders is prepared at a 1:1 molar ratio of Li to LiMn.sub.2 O.sub.4 and a 1:9 weight ratio of carbon to LiMn.sub.2 O.sub.4. Then, the mixture is heated at a temperature between 170.degree. C. and 200.degree. C. until spinel Li.sub.2 Mn.sub.2 O.sub.4 is produced. Alternatively, Li and carbon may be reacted together to produce LiC.sub.6 or LiC.sub.12. Then the LiC.sub.x may be mixed and heated with LiMn.sub.2 O.sub.4 to produce spinel Li.sub.2 Mn.sub.2 O.sub.4.

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"Lithium Intercalation from Aqueous Solutions", by Li, McKinnon and Dahn, J. Electrochem Soc., vol. 141, No. 9, Sep. 1994 .COPYRGT.The Electrochemical Society, Inc., pp. 2310-2315.

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