Method for obtaining lithium sulfide powder and use thereof for preparing LPS compounds

The present disclosure relates to a method of obtaining a powder of lithium sulfide (Li2S powder) having a d50 value of less than 10 [mu] m, a specific surface area of greater than 5 m2/g, a total pore volume of greater than 0.035 cm3/g, and a percentage of the total pore volume consisting of pores...

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Bibliographic Details
Main Authors JESS SCOTT, DARANZON LIVIUS, LEMERCIER, THIERRY
Format Patent
LanguageChinese
English
Published 19.04.2024
Subjects
BASIC ELECTRIC ELEMENTS
CHEMISTRY
COMPOUNDS THEREOF
ELECTRICITY
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Summary:The present disclosure relates to a method of obtaining a powder of lithium sulfide (Li2S powder) having a d50 value of less than 10 [mu] m, a specific surface area of greater than 5 m2/g, a total pore volume of greater than 0.035 cm3/g, and a percentage of the total pore volume consisting of pores having a diameter of less than 20 nm of greater than 20%, the method comprises the steps of: a) providing a powder of lithium hydroxide (LiOH powder A) having a d50 value of less than 10 [mu] m and exhibiting a residual water content of less than 5 wt.%, and b) reacting such LiOH powder A with a sulfide reactant in order to obtain the Li2S powder. The disclosure also relates to a powder of lithium sulfide obtained by such a process and to the use of such a Li2S powder for the preparation of a solid compound having the following formula (I): LiaPSbXc wherein-X represents at least one halogen element; -a represents a number from 3.0 to 6.0; -b represents a number from 3.5 to 5.0; and-c represents a number of 0 to 3.0
Bibliography:Application Number: CN202280059121