Gel Polymer Electrolyte Composition for Faster Crosslinking
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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 phosphate-based reaction additive, a polymerization initiator, a non-aqueous solvent, and a lithium salt, which reduces curing time to 10-50 minutes under heat treatment conditions of 55-80°C, preventing electrolyte leakage by promoting crosslinking reactions.
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 changes the chemical parameters of the electrolyte system by introducing a phosphate-based reaction additive that catalyzes the crosslinking reaction. This parameter change reduces the crosslinking time from several hours to 10-50 minutes while maintaining the gel polymer electrolyte's leakage prevention capability through proper crosslinking.
Solution Approach 2:
The phosphate-based reaction additive acts as an intermediary substance that facilitates the crosslinking process. It mediates between the oligomer and the crosslinking agent, accelerating the formation of the gel network structure without compromising the final product's reliability in preventing electrolyte leakage.
2Reliability
If a gel polymer electrolyte undergoes crosslinking process, then electrolyte leakage is prevented, but manufacturing cost increases due to extended process time
Solution Approach 1:
By changing the chemical composition parameters and adding the phosphate-based reaction additive, the crosslinking kinetics are improved, reducing process time and thereby lowering manufacturing costs while maintaining the reliability benefits of gel polymer electrolyte crosslinking.
3Stability of the object's composition
If conventional crosslinking process is used, then gel polymer electrolyte structure is formed, but process efficiency decreases due to lengthy curing time
Solution Approach 1:
The phosphate-based reaction additive serves as a catalytic intermediary that accelerates the crosslinking reaction kinetics, enabling the gel polymer electrolyte structure to form more quickly while maintaining its structural stability and compositional integrity.
Solution Approach 2:
The patent modifies the reaction parameters by introducing the phosphate-based additive, which changes the reaction rate and reduces curing time from conventional several hours to 10-50 minutes, thereby improving process efficiency without compromising the gel structure formation.
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; wherein the gel polymer electrolyte composition has a curing time in the range of 10 minutes to 50 minutes under a heat treatment condition of 55 to 80° C.
Implementation Method 2
the gel polymer electrolyte composition has a curing time in the range of 10 minutes to 50 minutes under a heat treatment condition of 55 to 80° C.
Data Source
AI summary
Disclosed herein relates to a gel polymer electrolyte composition, a secondary battery including the same, and a manufacturing method of a secondary battery, and has an advantage of increasing process efficiency by reducing the curing time of a gel polymer electrolyte while preventing leakage of an electrolyte.