Solid Electrolyte Slurry Milling With Sulfur Additives
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Solution Overview
Problem
Current solid-state battery cells are costly to produce and have a complicated manufacturing process, limiting their widespread adoption due to the high cost of raw materials and complexity of production.
Innovation Solution
A novel process for synthesizing solid electrolyte materials involves milling a slurry comprising solid electrolyte precursors, a solvent, and a sulfur-containing surfactant, which reduces viscosity and improves morphology and particle size, using milling media like zirconia or alumina.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional solid-state battery manufacturing processes are used, then product quality is maintained, but production cost increases and manufacturing complexity increases
Solution Approach 1:
The patent changes the chemical composition parameter by introducing sulfur-containing additives (such as thiols, sulfides, or disulfides) into the slurry mixture. This chemical modification enables simpler processing conditions and reduces manufacturing complexity while maintaining electrolyte quality
Solution Approach 2:
The sulfur-containing compounds act as intermediary substances that facilitate the synthesis process. These additives mediate between the precursors and final electrolyte product, enabling easier processing and reducing the complexity of manufacturing steps
2Ease of manufacture
If conventional solid-state battery manufacturing processes are used, then product quality is maintained, but production cost increases
Solution Approach 1:
The patent employs inexpensive sulfur-containing additives that can be used in small quantities during the synthesis process. These low-cost intermediates enable cost-effective production while maintaining electrolyte performance
Solution Approach 2:
By modifying the chemical composition with affordable sulfur-based compounds, the patent achieves cost reduction in raw materials while maintaining the required product quality standards
3Ease of operation
If sulfur-containing additives are used in the slurry, then viscosity is reduced and particle size is improved, but additive amount must be precisely controlled
Solution Approach 1:
The patent establishes specific concentration ranges for sulfur-containing additives (typically 0.1-10 wt%) to optimize slurry viscosity and particle size. By defining precise parameter ranges, the method achieves ease of operation while maintaining manufacturing precision
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
The process enhances the production efficiency and quality of solid electrolytes, potentially lowering production costs and simplifying the manufacturing process while maintaining or improving ionic conductivity.
Implementation Method 1
a sulfur-containing surfactant, which reduces viscosity
Implementation Method 2
milling a slurry comprising one or more solid electrolyte precursors, a solvent, and a surfactant
Data Source
AI summary
Described herein are processes for producing solid electrolyte materials. The processes include milling a slurry containing one or more solid electrolyte precursors, a solvent, and an additive, wherein the additive includes a compound comprising one or more sulfur atoms. Further provided herein are suspensions containing one or more solid electrolyte precursors, a solvent, and an additive, wherein the additive includes a compound comprising one or more sulfur atoms.