Porous Ion Conductive Layer for Stable Solid-State Battery Charging
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Solution Overview
Problem
Existing solid-state batteries face challenges in achieving improved performance, particularly in terms of ionic conductivity and stability, which limits their efficiency and safety.
Innovation Solution
The development of an ion conductive layer comprising a hygroscopic material, such as halide-based materials, with controlled porosity and thickness, formed through methods like tape casting and subsequent curing or sintering, to enhance ionic conductivity and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If solid-state electrolytes are used to enable lithium metal anode, then energy density and recharging speed are improved, but ionic conductivity and stability remain insufficient
Solution Approach 1:
The patent employs porous solid electrolyte materials with controlled pore structures to enhance ionic conductivity. The porous architecture provides additional pathways for ion transport while maintaining the solid-state structure, directly addressing the insufficient ionic conductivity issue while preserving the high energy density benefits of lithium metal anodes.
Solution Approach 2:
The patent utilizes composite solid electrolyte systems combining multiple materials (e.g., sulfide-based electrolytes with ceramic components) to achieve both high ionic conductivity and stability. The composite structure leverages the complementary properties of different materials to simultaneously improve recharging speed and reliability.
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 ion conductive layer achieves improved ionic conductivity and stability, facilitating faster charging times and enhanced safety in solid-state batteries.
Implementation Method 1
a solid ion conductive layer comprising an organic material and an inorganic material
Implementation Method 2
The solid ion conductive layer includes a hygroscopic ion conductive material
Data Source
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AI summary
An ion conductive layer can include a hygroscopic ion conductive material, such as a halide-based material. In an embodiment, the ion conductive layer can include an organic material, ammonium halide, or a combination thereof.