Heated Flow Path Cooling for Continuous Sulfide Solid Electrolyte
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Solution Overview
Problem
Existing methods for producing sulfide solid electrolytes face issues with gas generation and aggregation during melt cooling, leading to unstable production, and apparatuses are often complex and prone to blockages.
Innovation Solution
A method involving the use of a heated flow path with a throttle portion and cooling mechanism to discharge and cool the melt, including a heat insulating layer and controlled heating and cooling processes to prevent gas generation and ensure stable production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the melt is discharged and cooled without heating the flow path, then the cooling process is simple, but gas components aggregate and inhibit stable production
Solution Approach 1:
The flow path is heated in advance before the melt is discharged, so that when the melt flows through the flow path, the gas components are prevented from aggregating. This preliminary heating action ensures stable production without requiring complex real-time control during the discharge process.
2Productivity
If the melt is continuously discharged and cooled, then productivity is improved, but the melt aggregates in the vicinity of the discharge outlet and stable production is inhibited
Solution Approach 1:
The temperature parameter of the flow path is changed and maintained at a specific range (500°C or higher) to prevent melt aggregation during continuous discharge. By controlling the flow path temperature, both continuous production and stable operation are achieved simultaneously.
3Manufacturing precision
If a complex apparatus structure is used to control the cooling process, then the cooling control is improved, but the flow path is easily solidified and blocked
Solution Approach 1:
Heating is applied locally to the flow path rather than the entire apparatus, and cooling is applied locally at the discharge outlet. This localized approach prevents flow path blockage while maintaining adequate cooling control, simplifying the overall apparatus structure.
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 a controlled cooling process, ensuring consistent quality and operation.
Implementation Method 1
a flow path through which a melt obtained by the heating and melting is discharged to an outside of the furnace, in which the flow path includes a heating portion configured to heat the flow path
Implementation Method 2
a cooling portion configured to cool the melt in a vicinity of a downstream end portion of the flow path
Implementation Method 3
a heat insulating layer and controlled heating and cooling processes
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The present invention addresses the problem of providing a method for producing a sulfide solid electrolyte, the method being capable of stably and continuously producing a sulfide solid electrolyte. The present invention has solved the above problem by a production method wherein a sulfide solid electrolyte starting material is supplied into a furnace body 10, the sulfide solid electrolyte starting material is heated and melted, and a thus-obtained melt 11 is cooled by being discharged to the outside of the furnace body 10 through a heated flow channel 12.