Ionic Organic Framework Electrolyte for Stable Lithium-Ion Conduction
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Solution Overview
Problem
Current solid electrolytes for all-solid secondary batteries face challenges in achieving crystallinity without using polymers and controlling ionic conductivity, particularly in lithium-ion batteries, due to complex preparation processes and stability issues.
Innovation Solution
An ionic organic framework is developed, comprising a compound that forms a cation through protonation and a counteranion, formed by reacting aromatic compounds like triazine with pyridine or imidazole, allowing for controlled lithium-ion conductivity and stability through adjustable anion selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If polymer electrolytes are used to achieve solid electrolyte function, then ionic conductivity can be obtained, but the preparation process becomes complicated and stability decreases
Solution Approach 1:
The patent changes the chemical composition parameters by replacing polymer-based electrolytes with ionic organic frameworks containing specific functional groups (triazine, pyridine, imidazole). This parameter change achieves both simplified preparation and improved stability while maintaining ionic conductivity through the framework's inherent structure.
Solution Approach 2:
The patent creates a composite ionic organic framework by combining multiple aromatic compounds with complementary functional groups. The triazine provides structural stability, while pyridine/imidazole groups provide ionic conductivity through protonation, achieving both simplified preparation and enhanced performance.
2Manufacturing precision
If polymer-based solid electrolytes are used, then ionic conductivity can be achieved, but it becomes difficult to effectively control the desired ionic property
Solution Approach 1:
The patent enables precise control of ionic properties by changing the anion composition within the ionic organic framework. Different anions (Cl-, BF4-, PF6-, Tf2N-) can be selected to tune the ionic conductivity and other properties, achieving manufacturing precision without complicating the preparation process.
3Stability of the object's composition
If a new carbon material-based solid electrolyte without polymer is developed, then crystallinity can be achieved and anion selection freedom increases, but preparation methods need to be established
Solution Approach 1:
The patent applies preliminary action by pre-designing the ionic organic framework structure with built-in crystallinity through the selection of aromatic compounds with specific functional groups. The condensation reaction between triazine and pyridine/imidazole compounds is designed to naturally form crystalline structures, eliminating the need for complex post-processing while maintaining ease of manufacture.
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 ionic organic framework provides a solid electrolyte with excellent lithium-ion conductivity and stability, enabling effective control of the electrolyte's structure and characteristics, surpassing existing technologies in all-solid secondary batteries.
Implementation Method 1
the organic framework is formed from condensation between an aromatic compound having at least three functional groups that can participate in condensation and another aromatic compound having two or more functional groups that can participate in condensation
Implementation Method 2
the organic framework contains a compound capable of forming a cation through protonation in the framework
Data Source
AI summary
Provided is an ionic organic framework electrolyte for an all-solid secondary battery, more particularly to an ionic organic framework for a solid electrolyte of an all-solid secondary battery, the solid electrolyte having effectively controlled structure and characteristics, and excellent lithium-ion conductivity and stability, an electrolyte containing the same, and an all-solid secondary battery including the same.