Solid Electrolyte Film Structure Analysis by Selective Dissolution
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Solution Overview
Problem
Current methods for analyzing the internal structure of solid electrolytes, particularly sulfide-based solid electrolytes, face challenges due to low binder content and the difficulty in accurately determining three-dimensional structures using conventional techniques, which limits the improvement of ionic conductivity.
Innovation Solution
A method involving immersion of a solid electrolyte film in a polar solvent, such as water or ethanol, to selectively remove the solid electrolyte, allowing for the analysis of the intact binder structure, thereby enabling a more accurate analysis of the solid electrolyte film's three-dimensional structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional solid electrolyte analysis methods are used, then the analysis process is simple, but the measurement precision of the three-dimensional structure is insufficient
Solution Approach 1:
The patent extracts and removes the solid electrolyte material from the film structure using selective dissolution with polar solvents, allowing the binder framework to remain intact for analysis. This extraction enables direct observation of the three-dimensional structure without the obstruction of the electrolyte material itself.
Solution Approach 2:
The patent introduces polar solvents as an intermediary medium to selectively dissolve the solid electrolyte while leaving the binder structure intact. This intermediary approach allows for indirect visualization of the three-dimensional structure by removing only the electrolyte component.
2Measurement precision
If computational modeling is used to analyze sulfide-based solid electrolytes, then the conduction properties can be predicted, but the accuracy of binder and pore structure analysis is reduced
Solution Approach 1:
The patent physically extracts the solid electrolyte from the film using selective dissolution, providing direct access to the binder and pore structures that were previously obscured. This gives direct structural information rather than relying on computational predictions.
Solution Approach 2:
The patent creates a physical copy or replica of the binder framework by removing the electrolyte, allowing direct observation and analysis of the structural features that computational modeling can only indirectly predict.
3Loss of information
If the solid electrolyte film structure is analyzed directly, then the intact structure is preserved, but the internal structure visualization is difficult due to low binder content
Solution Approach 1:
The patent selectively extracts the solid electrolyte material using polar solvents, leaving behind the binder framework that constitutes the internal structure. This extraction makes the low-content binder structure visible and analyzable without losing internal structural information.
Solution Approach 2:
The patent applies selective dissolution that affects only the solid electrolyte component while leaving the binder structure unchanged. This local quality approach targets specific material phases, enabling visualization of the binder network without altering the overall film architecture.
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 effectively removes the solid electrolyte from the film, allowing for clear visualization of the binder structure and enhancing the accuracy of structural analysis, which can lead to improved ionic conductivity and performance in solid-state batteries.
Implementation Method 1
immersing a solid electrolyte film comprising a solid electrolyte and a binder into a polar solvent to remove the solid electrolyte from the solid electrolyte film
Data Source
AI summary
A method for analyzing a structure of a solid electrolyte film, including a step of: immersing the solid electrolyte film including a solid electrolyte and a binder into a polar solvent to remove the solid electrolyte from the solid electrolyte film; and analyzing a structure of the solid electrolyte film in which the solid electrolyte is removed.