Method of making spinel LI2MN204 compound
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United States of America Patent
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Feb 11, 1997
Grant Date -
N/A
app pub date -
Nov 22, 1995
filing date -
Nov 22, 1995
priority date (Note) -
Expired
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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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