Powdered lithium oxide, process for its preparation and use
OwnerMary MAI, Ulrich WIETELMANN +8inventors
InventorsMary MAI, Ulrich WIETELMANN, Alexander HÜBNER, Johannes KLÖSENER, Katrin WESSELS, Anja WEILAND, Thomas JANSEN, Tanita FROMMER, Henrike REMPEL, Rolf SANDERS
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Abstract
The invention relates to powdered lithium oxide Li2O, which has a specific surface area according to BET of at least 5 m2/g and a bulk density of at most 0.3 g/ml, a process for its preparation and its use in the preparation of overlithiated metal oxides.
Claims17
Process for the preparation of powdered lithium oxide Li2O having a specific surface area according to BET of at least 5 m2/g and a bulk density of at most 0.3 g/ml
- characterized in that
- powdered lithium peroxide Li2O2 with a minimum content of Li2O2 of 95 wt. %, is calcined at temperatures of 280 to 370° C. under inert gas conditions or in vacuo at pressures <10 mbar until the reaction according to
- Li2O2→Li2O+½O2
- to lithium oxide Li2O has taken place to at least 95%, based on the weight of the calcined reaction product.
Powdered lithium oxide Li2O, characterized in that it has a specific surface area according to BET of at least 5 m2/g and a bulk density of at most 0.3 g/ml.
Dependencies are inferred from the claim text.