Halide Heat Treatment for Simpler Solid Electrolyte Production
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Solution Overview
Problem
Existing methods for producing halides lack industrially high productivity, requiring complex equipment like vacuum-sealed tubes and planetary ball mills, and often result in low-cost mass production challenges.
Innovation Solution
A production method involving heat-treating a mixed material of LiX, YZ3, and additional components in an inert gas atmosphere between 200°C and 650°C, allowing for the production of halides with enhanced ionic conductivity without the need for vacuum-sealed tubes or planetary ball mills.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If vacuum-sealed tubes and planetary ball mills are used for halide production, then manufacturing precision can be maintained, but device complexity and production cost increase significantly
Solution Approach 1:
The patent extracts and eliminates the need for vacuum-sealed tubes and planetary ball mills from the production process. By using a simple heat treatment method in an inert atmosphere, the invention removes complex equipment while maintaining halide production quality, thereby resolving the contradiction between manufacturing precision and device complexity
Solution Approach 2:
The patent changes the production parameters by using heat treatment at 200-650°C in an inert gas atmosphere instead of mechanical ball milling. This parameter change allows the production of high-quality halides without requiring complex vacuum equipment or planetary ball mills, thus resolving the technical contradiction
2Manufacturing precision
If complex production methods are used, then halide quality can be ensured, but industrially high productivity is reduced
Solution Approach 1:
By removing complex production steps and equipment (vacuum sealing, planetary ball milling), the patent simplifies the production process to a straightforward heat treatment method. This extraction of unnecessary complexity enables both high halide quality and industrially high productivity, resolving the contradiction between manufacturing precision and productivity
Solution Approach 2:
The patent replaces mechanical ball milling with thermal processing (heat treatment). This substitution of mechanical systems with thermal processes simplifies the production method while maintaining product quality, thereby enabling high industrial productivity without sacrificing halide production quality
3Manufacturing precision
If vacuum-sealed tubes and specialized equipment are used, then production quality can be maintained, but production cost increases
Solution Approach 1:
The patent extracts and eliminates the need for expensive vacuum-sealed tubes and specialized planetary ball mills. By using simple heat treatment equipment in an inert atmosphere, the invention maintains halide production quality while significantly reducing production costs, thereby resolving the contradiction between manufacturing precision and ease of manufacture
Solution Approach 2:
The patent employs inexpensive heat treatment equipment and inert gas atmosphere instead of expensive vacuum equipment. This use of cheaper, simpler equipment while maintaining product quality directly addresses the contradiction between manufacturing precision and production cost
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 method enables the production of high-quality halides with improved ionic conductivity, suitable for use as solid electrolytes in lithium secondary batteries, while simplifying the production process and reducing costs.
Implementation Method 1
heat-treating, in an inert gas atmosphere, a mixed material in which LiX, YZ3, and at least one of LiX′ or YZ′3 are mixed, where X is an element selected from the group consisting of Cl, Br, and I; Z is an element selected from the group consisting of Cl, Br, and I and different from X; X′ is an element selected from the group consisting of Cl, Br, and I and different from either X or Z; and Z′ is an element selected from the group consisting of Cl, Br, and I and different from either X or Z, in which the mixed material is heat-treated at higher than or equal to 200° C. and lower than or equal to 650° C.
Data Source
AI summary
A production method for producing a halide includes heat-treating, in an inert gas atmosphere, a mixed material in which LiX, YZ3, and at least one of LiX′ or YZ′3 are mixed, where X is an element selected from the group consisting of Cl, Br, and I; Z is an element selected from the group consisting of Cl, Br, and I and different from X; X′ is an element selected from the group consisting of Cl, Br, and I and different from either X or Z; and Z′ is an element selected from the group consisting of Cl, Br, and I and different from either X or Z. In the heat-treatment, the mixed material is heat-treated at higher than or equal to 200° C. and lower than or equal to 650° C.