Gel Polymer Electrolyte Composition for Fast Curing Without Leakage
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Solution Overview
Problem
Conventional gel polymer electrolytes require lengthy crosslinking times, leading to decreased process efficiency and increased manufacturing costs in secondary battery production, and are prone to electrolyte leakage during charging and discharging.
Innovation Solution
A gel polymer electrolyte composition comprising an oligomer, a monocyclic or polycyclic amine curing accelerator, a polymerization initiator, and a lithium salt, which reduces curing time to between 10 minutes to 50 minutes under heat treatment conditions of 55 to 80°C, preventing electrolyte leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a gel polymer electrolyte is used to prevent electrolyte leakage, then reliability is improved, but the crosslinking time increases significantly, reducing productivity
Solution Approach 1:
The patent introduces a curing accelerator that fundamentally changes the kinetic parameters of the crosslinking reaction, reducing the curing time from several hours to 10-50 minutes while maintaining the gel polymer electrolyte's leakage prevention capability. This parameter change enables both high reliability and improved productivity.
Solution Approach 2:
The curing accelerator acts as an intermediary substance that mediates between the oligomer and the crosslinking process. By introducing this intermediate agent, the crosslinking reaction is accelerated significantly without compromising the final gel structure's integrity and leakage prevention properties.
2Reliability
If a gel polymer electrolyte undergoes crosslinking to prevent leakage, then reliability is improved, but manufacturing cost increases due to extended process time
Solution Approach 1:
By changing the reaction kinetics parameters through the curing accelerator, the manufacturing process time is dramatically reduced, which directly lowers energy consumption and labor costs while maintaining the reliability benefits of gel polymer electrolyte crosslinking.
3Reliability
If conventional crosslinking methods are used for gel polymer electrolyte, then electrolyte leakage is prevented, but process efficiency decreases due to long curing time
Solution Approach 1:
The curing accelerator serves as a catalytic intermediary that speeds up the crosslinking process by providing an alternative reaction pathway with lower activation energy, thereby improving process efficiency without sacrificing the leakage prevention reliability of the gel polymer electrolyte.
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
The solution significantly enhances manufacturing efficiency and product quality by reducing curing time by 25% or more compared to conventional methods while preventing electrolyte leakage, thereby improving the overall production process for secondary batteries.
Implementation Method 1
a polymerization initiator
Implementation Method 2
a curing accelerator that is a monocyclic or a polycyclic amine compound
Implementation Method 3
under a heat treatment condition of 55 to 80° C.
Data Source
AI summary
A gel polymer electrolyte composition, a secondary battery including the same, and a manufacturing method of a secondary battery are disclosed. Advantages of the disclosed aspects include increasing process efficiency by reducing the curing time of a gel polymer electrolyte while preventing leakage of an electrolyte.