The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 03, 2023
Filed:
Feb. 02, 2018
Albemarle Germany Gmbh, Frankfurt am Main, DE;
Hannes Vitze, Idstein, DE;
Vera Nickel, Haiger, DE;
Sebastian Lang, Goslar, DE;
Marc-christian Müller, Ober-Hilbersheim, DE;
Sebastian Pietzner, Zeilsheim, DE;
Armine Plath, Frankfurt am Main, DE;
Hannes Vitze, Idstein, DE;
Vera Nickel, Haiger, DE;
Sebastian Lang, Goslar, DE;
Marc-Christian Müller, Ober-Hilbersheim, DE;
Sebastian Pietzner, Zeilsheim, DE;
Armine Plath, Frankfurt am Main, DE;
Albemarle Germany GmbH, Frankfurt am Main, DE;
Abstract
The invention relates to a highly reactive, high-purity, free-flowing and dust-free lithium sulfide powder having an average particle size between 250 and 1,500 μm and BET surface areas between 1 and 100 m/g. The invention, furthermore, relates to a process for its preparation, wherein in a first step, lithium hydroxide monohydrate is heated in a temperature-controlled unit to a reaction temperature between 150° C. and 450° C. in the absence of air, and an inert gas is passed over or through it, until the residual water of crystallization content of the formed lithium hydroxide is less than 5 wt. % and in a second step, the anhydrous lithium hydroxide formed in the first step is mixed, overflowed or traversed by a gaseous sulfur source from the group consisting of hydrogen sulfide, elemental sulfur, carbon disulfide, mercaptans or sulfur nitrides.