Foamed Solid Ion Conductive Layer for Stable Fast-Charging Batteries
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Solution Overview
Problem
Existing solid-state batteries face challenges in achieving improved performance due to limitations in the development of solid ion conductive layers, particularly in terms of ion conductivity and stability, which hinder the full potential of solid-state lithium batteries.
Innovation Solution
The development of a solid ion conductive layer comprising a foamed matrix with a hygroscopic electrolyte material, such as halide-based or sulfide-based materials, and an organic material with controlled porosity and thickness, which enhances ion conductivity and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If solid-state electrolytes are used to enable lithium metal anode, then energy density and recharging speed are improved, but ion conductivity and stability limitations hinder full potential performance
Solution Approach 1:
The patent employs composite electrolyte structures combining organic and inorganic materials, such as polymer electrolytes with ceramic fillers or layered configurations of different solid electrolytes. This composite approach leverages the high ion conductivity of inorganic materials while the organic components provide flexibility and stability, collectively overcoming the limitations of single-material electrolytes and enabling both fast recharging and reliable performance.
Solution Approach 2:
The patent modifies physical and chemical parameters of solid electrolytes including composition ratios, crystalline structure, density, and microstructure. By adjusting these parameters, the electrolyte achieves optimized ion conductivity and enhanced stability simultaneously, resolving the contradiction between fast recharging capability and operational reliability.
2Reliability
If solid ion conductive layer is developed to improve performance, then ion conductivity increases, but manufacturing complexity and process difficulty increase
Solution Approach 1:
The patent utilizes porous solid electrolyte structures that provide high ion conductivity through interconnected pore networks while maintaining manufacturability. The porous architecture allows for easier processing, better electrode contact, and simplified assembly compared to dense solid electrolytes, thus achieving high ion conductivity without excessive manufacturing complexity.
Solution Approach 2:
The patent divides the solid ion conductive layer into multiple functional sub-layers or segments with different compositions and properties. This segmentation allows each layer to be optimized for specific functions (e.g., interface stability, bulk ion conductivity) while simplifying the overall manufacturing process through modular assembly and standardized production techniques.
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 solid ion conductive layer improves the performance of solid-state batteries by increasing ion conductivity and stability, facilitating faster charging times and higher energy densities while minimizing safety concerns.
Implementation Method 1
a solid ion conductive layer including a foamed matrix with an electrolyte material
Implementation Method 2
a solid ion conductive layer including a foamed matrix with an electrolyte material
Data Source
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AI summary
A solid ion conductive layer can include a foamed matrix and an electrolyte material including a hygroscopic material. In an embodiment, the electrolyte material can include a halide-based material, a sulfide-based material, or any combination thereof. In another embodiment, the solid ion conductive layer can include total porosity of at least 30 vol% for a total volume of the solid ion conductive layer.