Heated Flow Path for Stable Sulfide Solid Electrolyte Production
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Solution Overview
Problem
Existing methods for producing sulfide solid electrolytes face issues with gas generation during cooling and solidification, leading to aggregation and instability in the production process, particularly in continuous production systems, and existing apparatuses are complex and prone to blockages.
Innovation Solution
A method involving the use of a heated flow path with a throttle portion, such as a nozzle shape, to discharge and cool the melt, combined with a heat insulating layer and controlled heating and cooling processes, prevents gas generation and ensures stable production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a sulfide solid electrolyte raw material is continuously supplied into a furnace and the melt is continuously discharged and cooled and solidified, then productivity is improved, but the melt aggregates in the vicinity of a discharge outlet and stable production is inhibited
Solution Approach 1:
The flow path is heated in advance before the melt is discharged, and heating is continued during the discharge process. This preliminary and continuous heating action prevents the melt from solidifying in the flow path and eliminates gas aggregation at the discharge outlet, enabling stable continuous production.
Solution Approach 2:
The temperature of the flow path is controlled and maintained at a specific range (500°C or higher) to prevent solidification and gas aggregation. By changing and controlling the thermal parameter of the flow path, the patent resolves the contradiction between continuous production and production stability.
2Loss of energy
If the melt is cooled and solidified without heating the flow path, then energy consumption is reduced, but the flow path solidifies and blocks when the raw material is cooled
Solution Approach 1:
Only the flow path portion that is prone to solidification and gas aggregation (particularly near the discharge outlet) is heated, rather than heating the entire system. This localized heating approach minimizes energy consumption while ensuring the flow path remains operational.
Solution Approach 2:
The heating of the flow path is continued throughout the melt discharge process, ensuring continuous prevention of solidification. This continuous useful action maintains flow path operability without excessive energy waste.
3Device complexity
If existing apparatus structures are used without heating the flow path, then device complexity is reduced, but gas aggregation occurs and stable production is inhibited
Solution Approach 1:
The flow path heating function is integrated into the existing apparatus, allowing the system to self-regulate and prevent gas aggregation without requiring additional complex external equipment. The heating mechanism serves the flow path directly where needed.
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 allows for the stable and continuous production of sulfide solid electrolytes by preventing gas aggregation and maintaining the integrity of the production process, enhancing operational stability and efficiency.
Implementation Method 1
heating a flow path used for discharging a melt of a sulfide solid electrolyte raw material when the melt is discharged from a furnace
Implementation Method 2
a heat insulating layer and controlled heating and cooling processes
Implementation Method 3
the melt is cooled and solidified
Data Source
AI summary
The present invention relates to a method for producing a sulfide solid electrolyte includes: supplying a sulfide solid electrolyte raw material into a furnace; heating and melting the sulfide solid electrolyte raw material; and discharging an obtained melt to an outside of the furnace through a heated flow path to perform cooling.