Sulfide Solid Electrolyte Milling Time Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing methods for producing sulfide solid electrolyte materials face challenges with increased milling time due to the low reactivity of LiBr, which improves but results in decreased reactivity of the Li2S component, preventing sufficient reduction in milling time.
Innovation Solution
A method involving the preparation of composite particles with a solid solution including a Li2S component and a LiBr component, followed by a mechanical milling treatment with thermal energy, which enhances the reactivity of LiBr while maintaining the reactivity of Li2S, thereby reducing the milling time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If mechanical milling treatment is performed on Li2S, P2S5 and LiX to synthesize sulfide solid electrolyte material, then sulfide solid electrolyte material is synthesized, but milling time increases due to low reactivity of LiBr
Solution Approach 1:
The patent applies preliminary action by pre-forming composite particles containing a solid solution of Li2S and LiBr before the main milling reaction. This preliminary preparation ensures that LiBr is in a reactive state from the outset, allowing the subsequent milling process to proceed more efficiently without sacrificing Li2S reactivity.
Solution Approach 2:
The patent uses composite materials by creating composite particles that contain a solid solution of Li2S and LiBr. This composite structure allows the two components to work synergistically, with the solid solution enhancing LiBr reactivity while maintaining Li2S reactivity, thereby reducing overall milling time while ensuring complete synthesis of the sulfide solid electrolyte material.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach effectively improves the reactivity of LiBr and prevents a decrease in Li2S reactivity, resulting in a significant reduction in milling time for the synthesis of sulfide solid electrolyte materials.
Implementation Method 1
a mechanical milling treatment is performed on the composite particles and the phosphorus source in the reaction chamber
Implementation Method 2
a mechanical milling treatment is performed on the composite particles and the phosphorus source in the reaction chamber while thermal energy is applied
Data Source
AI summary
The present disclosure provides a method of producing a sulfide solid electrolyte material which includes a preparing process of preparing composite particles including a solid solution including a Li2S component and a LiBr component; an addition process of adding the composite particles and a phosphorus source to a reaction chamber; and a milling process in which a mechanical milling treatment is performed on the composite particles and the phosphorus source in the reaction chamber while thermal energy is applied.