Solid Electrolyte Membrane With Dye-Based Pore Filling Detection
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Solution Overview
Problem
Conventional solid electrolyte membranes face challenges such as tearing, cracking, and difficulty in determining the extent of pore filling with solid electrolyte materials, leading to potential short-circuits and safety issues in lithium ion batteries.
Innovation Solution
A solid electrolyte membrane comprising a porous polymer sheet filled with a solid electrolyte material and a dye, allowing visual determination of filling through color development.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a porous sheet is filled with solid electrolyte material to prevent tearing and cracking, then the strength and reliability of the electrolyte membrane is improved, but it becomes difficult to determine whether the pores are filled sufficiently
Solution Approach 1:
The patent applies a dye to the solid electrolyte material, causing it to exhibit color development when pores are filled. This allows visual detection of filling status through color changes, directly resolving the detection difficulty while maintaining the reliability benefits of pore filling
2Reliability
If a composite of solid electrolyte material with porous sheet is manufactured to prevent short-circuits, then the safety and insulation performance is improved, but the manufacturing complexity increases
Solution Approach 1:
The patent combines the solid electrolyte material with a dye into a single composite composition before filling the porous sheet. This merging of materials simplifies the manufacturing process by reducing the number of separate steps needed, while still achieving the short-circuit prevention function
3Illumination intensity
If polymeric solid electrolyte is used to ensure high light transmission and clarity, then the visual inspection capability is improved, but the pore filling determination remains difficult
Solution Approach 1:
The patent introduces a dye that produces color development in the solid electrolyte material. This allows pore filling to be determined visually through color changes rather than relying on light transmission through clear material, directly resolving the detection difficulty while maintaining compatibility with polymeric electrolytes
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
Enables easy manufacturing of thin, high-strength electrolyte membranes with improved energy density and reduced manufacturing costs by ensuring adequate pore filling, reducing the risk of short-circuits.
Implementation Method 1
how much the porous polymer sheet is filled with the solid electrolyte material is determined visually by the color development characteristics of the dye
Data Source
Figure 1~2a
Figure 2b~3a
Figure 3b
AI summary
The present disclosure relates to a method for manufacturing a solid electrolyte membrane. The method for manufacturing a solid electrolyte membrane allows visual determination of how much a porous sheet is filled with a solid electrolyte material, and thus can optimize selection of materials and manufacturing processes of a solid electrolyte membrane in a simple manner. In addition, the solid electrolyte membrane obtained by applying the materials and manufacturing process selected by the above-mentioned determination method can reduce the manufacturing cost and allow easy deformation, and thus can be processed with ease when it is applied to batteries having various shapes. Further, since the solid electrolyte membrane according to the present disclosure includes a composite of a porous polymer material, such as a nonwoven web, with a solid electrolyte material, it has excellent strength and allows formation of a thin film, and thus provides a battery with improved energy density advantageously.