Method for producing lithium sulfide using lithium polysulfide
By mixing carbonaceous materials into lithium sulfate powder and subjecting it to heat treatment, followed by extraction and drying with water or aprotic polar solvents, the problems of atmospheric stability and excessive sulfur loss in lithium sulfide manufacturing were solved, enabling the low-cost preparation of high-purity lithium sulfide.
CN122422249APending Publication Date: 2026-07-17POSCO HLDG INC
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- POSCO HLDG INC
- Filing Date
- 2024-12-16
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
In the manufacturing process of lithium sulfide, there are problems with atmospheric stability and excessive use of lithium sulfide raw materials leading to excessive sulfur loss. In addition, existing methods are costly and complex.
Method used
High-purity lithium sulfide is prepared by mixing carbonaceous materials into lithium sulfate powder and subjecting it to heat treatment, followed by solvent extraction with water or aprotic polar solvent, adding a sulfur source, and combining drying and heat treatment steps.
Benefits of technology
It improves the atmospheric stability of lithium sulfide, simplifies the manufacturing process, reduces manufacturing costs, and improves production efficiency and product purity.
✦ Generated by Eureka AI based on patent content.
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Figure CN122422249A_ABST
Abstract
本发明涉及一种利用多硫化锂的硫化锂的制造方法，其为包括向硫酸锂水溶液中混合碳系物质并进行热处理的步骤、利用包括水（H2O）的溶剂对热处理后的产物进行溶剂萃取的步骤、以及获得硫化锂的步骤，并且对所述热处理后的产物进行溶剂萃取的步骤包括向所述热处理后的产物中添加S8的步骤的硫化锂的制造方法。
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