Ternary lithium manganese spinel and process for the production thereof
AssigneeNBT GmbH
InventorHeinz-Joachim Voss
Life of this patent
Estimating the term…
Abstract
The invention relates to a process for the preparation of ternary lithium spinels, and to ternary lithium spinels of the general formula LiaMebMn2−bOc. The invention is achieved in accordance with the invention by a process which comprises dissolving a manganese salt in water, adding an oxidant, adding the mixture to an aqueous lithium hydroxide solution containing from 0.1 to 1 % by weight, based on the content of LiOH employed, of seed crystals selected from the group consisting of activated carbon, Aerosil and spine, and separating off, washing and heating the precipitate.
Claims9
A process for preparing ternary lithium-manganese spinels by precipitation from aqueous manganese salt solution comprising:
- dissolving a manganese salt in water;
- adding an oxidant to the water containing dissolved manganese salt to form a mixture;
- adding the mixture to an aqueous lithium hydroxide solution containing from about 0.1 to about 1% by weight, based on the content of LiOH, of seed crystals selected from the group consisting of activated carbon, silica and spinel;
- and
- separating off the resulting precipitate.
Dependencies are inferred from the claim text.