Process for preparing lithium salts such as anhydrous lithium hydroxide and anhydrous lithium halides
AssigneeAMG Lithium GmbH
InventorsVera Nickel, Hannes Vitze, Christine Gabbey, Stefanie Riehl, Stefan Scherer, Martin Janssen, Rebecca Spielau
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Abstract
The present invention relates to a method for producing lithium salts, such as lithium hydroxide and lithium halides, wherein the lithium salts obtained are substantially free of water and optionally other impurities, such as lithium carbonate and/or lithium oxide. Moreover, the present invention refers to lithium salts, such as lithium hydroxide and lithium halides obtainable by said method, as well as their use for the production of e.g. solid electrolytes, lithium metal or lithium carbonate.
Claims10
A method for producing a lithium salt which is substantially free of water comprising the steps of:
- (i) providing lithium hydroxide as a starting material in a reactor, wherein the starting material is in solid form, and
- (ii) subjecting the starting material of step (i) to a stream of carrier gas at room temperature or elevated temperatures in a range of 20-80° C.
- (iii) contacting the product obtained after step (ii) with a halogen-containing gas, thereby forming lithium halides, wherein step (iii) is carried out at room temperature or elevated temperatures in a range of 20-300° C., and wherein the halogen-containing gas is selected from the group consisting of HCl, HBr, HF, HI, and mixtures thereof.
Dependencies are inferred from the claim text.