POZ-Epoxy Electrolyte Network Balancing Ion Transport and Stiffness
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Solution Overview
Problem
Current multifunctional energy storage materials face a trade-off between energy storage capabilities and mechanical properties, with electrolytes struggling to achieve high ionic conductivity and structural integrity simultaneously, leading to insufficient performance in applications like aviation and portable electronics.
Innovation Solution
A polymer-based electrolyte network is formed by crosslinking polyoxazoline (POZ) through its amine groups with epoxy resins, creating a structure that enhances both ionic conductivity and mechanical performance by forming passageways for cation migration, eliminating the need for separate curing agents and allowing for the incorporation of ionic components for improved ion transport.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ionic liquid is incorporated to facilitate ion transportation, then ionic conductivity is improved, but mechanical performance deteriorates due to matrix softening
Solution Approach 1:
The patent changes the chemical composition parameters by incorporating specific ionic liquids (ILs) with defined cation-anion combinations into the epoxy matrix. By carefully selecting IL types and controlling their concentration (optimized at specific weight percentages), the patent achieves enhanced ionic conductivity while maintaining mechanical integrity through parameter optimization rather than simple addition.
Solution Approach 2:
The patent creates a composite material system combining epoxy resin matrix with ionic liquid components. This composite approach allows the synergistic integration of the structural properties of epoxy with the ionic conductivity of ILs, forming a heterogeneous microstructure where both materials contribute their strengths to achieve simultaneous improvement in mechanical performance and ionic conductivity.
2Strength
If crosslinking is increased to improve mechanical stiffness, then structural integrity is improved, but ion conduction deteriorates due to reduced polymer motion
Solution Approach 1:
The patent applies local quality by creating regions of different crosslinking densities within the polymer matrix. By controlling the distribution and functionality of crosslinking agents, the patent generates localized soft regions that facilitate ion transport while maintaining overall structural stiffness through the bulk crosslinked network, thus resolving the contradiction between mechanical strength and ionic conductivity.
Solution Approach 2:
The patent introduces a porous or channel-like microstructure within the crosslinked network that provides dedicated pathways for ion conduction. These channels or passageways allow ions to move through the matrix without requiring extensive polymer chain motion, thereby maintaining mechanical stiffness while enabling efficient ion transport through the structured voids or channels in the material.
3Weight of moving object
If multifunctional resin is designed to serve as both electrolyte and structural matrix, then weight is reduced, but performance trade-off between mechanical strength and ionic conductivity persists
Solution Approach 1:
The patent achieves true multi-functionality by designing an epoxy-based polymer electrolyte that simultaneously provides structural support and ionic conduction functions. The resin system is formulated to perform both mechanical matrix duties and electrolyte functions, eliminating the need for separate components and achieving weight reduction while balancing performance through the integrated multifunctional design.
Solution Approach 2:
The patent employs composite material architecture where the epoxy-resin-ionic liquid system functions as both structural matrix and electrolyte. This composite approach enables the material to fulfill multiple roles simultaneously, providing both mechanical integrity for structural applications and ionic conductivity for energy storage functions, thus achieving weight reduction without performance compromise.
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 POZ-based electrolyte network achieves high multifunctionality, balancing ionic conductivity and mechanical stiffness, enabling the development of advanced energy storage devices with improved power density and structural integrity, surpassing the limitations of existing materials.
Implementation Method 1
A polymer-based electrolyte network is formed by crosslinking polyoxazoline (POZ) through its amine groups with epoxy resins
Implementation Method 2
The network is designed as a multifunctional energy storage system that is capable of transferring mobile cations through the passageways present in its structure
Data Source
AI summary
A polyoxazoline-based electrolyte and a network formed by crosslinking of the electrolyte through its secondary amine groups with an epoxy resin are provided. The network is designed as a multifunctional energy storage system that is capable of transferring mobile lithium cations through the passageways present in its structure. The present invention also relates to a method that is used to obtain such a network and electrolyte.