Electrode Laminate Curing With an Oxygen-Blocking Release Film
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Solution Overview
Problem
The challenge of completely curing a gel electrolyte in an oxygen environment during the manufacturing of large-area electrode laminates is hindered by the volatilization and separation of the gel electrolyte due to oxygen contact, which limits the production of large laminates and affects the integrity of the electrolyte layer.
Innovation Solution
A method involving the use of an oxygen blocking member, such as glass or polypropylene, to prevent contact between the gel electrolyte and oxygen during the curing process, allowing for complete curing and formation of an electrolyte layer on the electrode surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the gel electrolyte is gelled in an oxygen environment, then the manufacturing process is simplified and large-area electrode laminates can be produced, but the gel electrolyte is not completely cured and volatilizes or separates during cell manufacturing
Solution Approach 1:
A release film is introduced as an intermediary layer between the gel electrolyte and the oxygen environment. The release film allows the curing process to proceed in an oxygen-containing atmosphere while preventing oxygen from reaching and interfering with the gel electrolyte, thus enabling complete curing without requiring an oxygen-free glove box environment
Solution Approach 2:
The release film creates a localized inert environment for the gel electrolyte by blocking oxygen contact, allowing the curing reaction to proceed completely without oxygen interference while still permitting the overall process to occur in ambient air, thus resolving the contradiction between manufacturing simplicity and curing completeness
2Reliability
If the gel electrolyte is gelled in an oxygen-free environment (glove box), then complete curing is achieved and volatilization is prevented, but large-area electrode laminates cannot be manufactured due to space limitations
Solution Approach 1:
The release film serves as a mediator that enables complete curing of the gel electrolyte while allowing the process to be conducted outside the confined space of a glove box. By blocking oxygen at the interface, the release film permits large-area electrode laminates to be manufactured in ambient environments without compromising curing completeness
Solution Approach 2:
The oxygen-blocking function is extracted from the glove box environment and transferred to the release film. This allows the curing process to achieve the same protective effect as a glove box without the space constraints, enabling large-area electrode laminate manufacturing
3Ease of operation
If the gel electrolyte comes into contact with oxygen, then the manufacturing process can proceed in ambient environment, but the gel electrolyte volatilizes and separates from the electrode
Solution Approach 1:
The release film acts as an intermediary barrier that prevents oxygen from contacting the gel electrolyte while allowing the manufacturing process to proceed in ambient environment. This maintains the interfacial stability and prevents volatilization and separation of the gel electrolyte from the electrode
Solution Approach 2:
A thin film release layer is used to provide oxygen protection to the gel electrolyte. This thin film structure maintains close contact with the electrode surface, ensuring uniform protection and preventing localized volatilization or separation while allowing ambient environment processing
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 complete curing of the gel electrolyte in an oxygen environment, preventing volatilization and separation, thereby ensuring uniform reaction throughout the electrode and improving capacity, output, and lifespan characteristics of lithium secondary batteries.
Implementation Method 1
disposing an oxygen blocking member on the applied electrolyte solution
Implementation Method 2
curing the electrolyte solution impregnated inside the electrode and the electrolyte solution applied onto the electrode surface
Data Source
AI summary
A method for manufacturing an electrode laminate includes preparing an electrode, applying an electrolyte solution onto the electrode, disposing an oxygen blocking member on the applied electrolyte solution, and curing the electrolyte solution impregnated inside the electrode and the electrolyte solution applied onto the electrode surface.