Composite Electrode Layering With Simultaneous Solvent Removal
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Solid state secondary batteries face issues with damage to the solid electrolyte layer during the pressing process, leading to potential short circuits between the positive and negative electrodes.
Innovation Solution
A method of manufacturing an electrode that involves applying a first liquid composition containing a solvent and polymerizable compounds to a substrate, reacting and forming an insulating resin layer, and then applying a second liquid composition with an active material and a second solvent, both solvents being removed simultaneously to form an electrode composite layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high pressure pressing is applied to achieve high density, then battery performance is improved, but the solid electrolyte layer may crack and cause short circuits
Solution Approach 1:
The patent applies a release agent to the solid electrolyte layer before the high-pressure pressing process. This preliminary action creates a protective interface that prevents direct contact between the pressing apparatus and the electrolyte layer, thereby preventing cracks while allowing the high-pressure pressing needed for battery performance
2Manufacturing precision
If solvents are removed sequentially from insulating resin layer and electrode composite layer, then each layer can be formed properly, but the manufacturing process becomes complex and time-consuming
Solution Approach 1:
The patent combines the solvent removal steps for both the insulating resin layer and electrode composite layer into a single simultaneous drying process. This merging eliminates the need for separate removal steps, simplifying the manufacturing process while ensuring proper formation of both layers
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 prevents electrode curling and enhances the integrity of the electrode structure, reducing the risk of short circuits and improving the performance and yield of solid state batteries.
Implementation Method 1
applying a first liquid composition containing a first solvent and polymerizable compounds to a substrate, reacting the first liquid composition
Implementation Method 2
the removing the first solvent and the removing the second solvent are conducted at the same time
Data Source
AI summary
A method of manufacturing an electrode includes applying a first liquid composition containing a first solvent and polymerizable compounds to a substrate, reacting the first liquid composition, removing the first solvent to form an insulating resin layer, applying a second liquid composition containing an active material and a second solvent to the substrate, and removing the second solvent composition to form an electrode composite layer, wherein the removing the first solvent and the removing the second solvent are conducted at the same time.