Methods for producing carbon-lithium compounds and lithium sulfide
By forming a carbon-lithium compound in a pellet shape and controlling thermal reduction conditions, the method addresses oxide and impurity issues in lithium sulfide production, resulting in high-purity lithium sulfide for all-solid-state batteries.
JP2026520043APending Publication Date: 2026-06-19CLEANSOLUTION CO LTD +1
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- CLEANSOLUTION CO LTD
- Filing Date
- 2024-10-23
- Publication Date
- 2026-06-19
AI Technical Summary
Technical Problem
The production of lithium sulfide is hindered by the generation of oxides during thermal reduction, leading to increased oxygen content and impurities, which are problematic for all-solid-state batteries.
Method used
A method involving the formation of a carbon-lithium compound in a pellet shape, with controlled thermal reduction conditions, including a vacuum atmosphere, specific ratios of carbon to lithium compounds, and controlled temperature and time, to suppress oxide generation.
Benefits of technology
This method effectively reduces oxide and impurity content, enabling the production of high-purity lithium sulfide suitable for all-solid-state batteries.
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Smart Images
Figure 2026520043000001_ABST
Abstract
The present invention relates to a carbon-lithium compound and a method for producing lithium sulfide, wherein the carbon-lithium compound is an intermediate product for producing lithium sulfide powder having a pellet shape, and contains an oxide, the oxide may be 1.0% or less based on the second XRD peak value of lithium sulfide (Li2S).
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