Solid Nanocomposite Electrolyte Ionic Conductivity
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Solution Overview
Problem
Current solid composite electrolyte materials for solid-state ion insertion batteries have ionic conductivities lower than the bulk conductivity of the corresponding ionic liquid electrolyte, and are incompatible with certain electrode materials due to chemical reactions, limiting their practical application.
Innovation Solution
A solid nanocomposite electrolyte material comprising a mesoporous dielectric material with a continuous, uninterrupted electrolyte layer formed by a first dipolar or ionic compound adsorbed on the inner surfaces and a second ionic compound or salt, enhancing ionic conductivity by weakening the bond between ions and allowing free movement of ions, thus achieving higher ionic conductivity than the bulk electrolyte.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a solid composite electrolyte material is used to increase safety and energy density, then mechanical stability is improved, but ionic conductivity deteriorates (lower than bulk conductivity)
Solution Approach 1:
The patent employs a porous solid support structure that provides mechanical stability while containing pores filled with ionic liquid electrolyte. This porous architecture allows the solid composite to maintain structural integrity while enabling high ionic conductivity through the liquid-filled pores, resolving the contradiction between mechanical strength and ionic conductivity.
Solution Approach 2:
The patent creates a composite electrolyte system combining solid porous support material with liquid ionic liquid electrolyte. This composite structure leverages the mechanical advantages of solids and the ionic conductivity advantages of liquids, achieving both high mechanical stability and high ionic conductivity simultaneously.
2Ease of manufacture
If an acid catalyst is used in sol-gel method to form silica, then electrolyte formation is improved, but chemical compatibility with electrodes deteriorates
Solution Approach 1:
The patent removes the acid catalyst component from the sol-gel process by using alternative catalysts such as bases or enzymes. This extraction of the harmful acid element allows the electrolyte formation process to proceed without compromising electrode chemical compatibility, while still achieving effective silica network formation.
Solution Approach 2:
The patent introduces alternative catalysts (bases or enzymes) as intermediaries to replace acid catalysts in the sol-gel process. These intermediary substances facilitate the electrolyte formation and silica condensation without causing harmful chemical reactions with the electrodes, thus maintaining chemical compatibility.
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 proposed solution results in a solid nanocomposite electrolyte with ionic conductivity higher than the bulk electrolyte, enabling faster charging rates, increased electrode thickness, and enhanced energy and power density in solid-state batteries, while being compatible with various electrode materials.
Implementation Method 1
a first dipolar or ionic compound adsorbed on the inner surfaces with the first pole facing the inner surfaces
Implementation Method 2
introducing or modifying a charge delocalization in the first dipolar or ionic compound and introducing or modifying a molecular dipole moment over the first dipolar or ionic compound; thereby weakening a bond between the first ions and the second ions and enhancing a mobility of the second ions
Data Source
AI summary
A solid nanocomposite electrolyte material comprising a mesoporous dielectric material comprising a plurality of interconnected pores and an electrolyte layer covering inner surfaces of the mesoporous dielectric material. The electrolyte layer comprises: a first layer comprising a first dipolar compound or a first ionic compound, the first dipolar or ionic compound comprising a first pole of a first polarity and a second pole of a second polarity opposite to the first polarity, wherein the first layer is adsorbed on the inner surfaces with the first pole facing the inner surfaces; and a second layer covering the first layer, the second layer comprising a second ionic compound or a salt comprising first ions of the first polarity and second ions of the second polarity, wherein the first ions of the ionic compound or salt are bound to the first layer.