Elastomeric Electrolyte for High-Energy Solid-State Batteries
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Summary
Problems
Current solid-polymer electrolytes for metal batteries, such as those based on poly(ethylene oxide), lack sufficient ionic conductivity and stability for high-energy applications, and there is a need for enhanced mechanical properties and ion conduction methods.
Innovation solutions
A polymer composition comprising an elastomeric matrix with dispersed plastic crystals forms a three-dimensional interconnected phase, achieving ionic conductivity of at least 1.1 mS/cm at 20°C, and is formed by polymerizing a mixture of monomers, plastic crystals, and a salt, with optional cross-linking for improved mechanical properties.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If poly(ethylene oxide) (PEO)-based solid polymer electrolytes are used, then the electrolyte provides a stable solid structure for metal batteries, but the ionic conductivity is insufficient for stable operation
Why choose this principle:
The patent combines elastomeric polymer matrices with plastic crystal phases to create a composite solid polymer electrolyte. The elastomeric matrix provides mechanical stability and flexibility, while the dispersed plastic crystals form three-dimensional interconnected phases that provide ion conduction pathways, achieving both structural stability and sufficient ionic conductivity (at least 1.1 mS/cm at 20°C).
Principle concept:
If poly(ethylene oxide) (PEO)-based solid polymer electrolytes are used, then the electrolyte provides a stable solid structure for metal batteries, but the ionic conductivity is insufficient for stable operation
Why choose this principle:
The patent creates localized ion-conducting regions by dispersing plastic crystals within the elastomeric matrix. The plastic crystals form three-dimensional interconnected phases at specific locations throughout the matrix, providing high ionic conductivity pathways while the surrounding elastomeric matrix maintains overall structural stability. This local differentiation allows simultaneous optimization of both stability and ionic conductivity.
Application Domain
Data Source
AI summary:
A polymer composition comprising an elastomeric matrix with dispersed plastic crystals forms a three-dimensional interconnected phase, achieving ionic conductivity of at least 1.1 mS/cm at 20°C, and is formed by polymerizing a mixture of monomers, plastic crystals, and a salt, with optional cross-linking for improved mechanical properties.
Abstract
Disclosed is a polymer composition comprising a) a matrix comprising an elastomeric polymer; b) a plurality of plastic crystals dispersed within the matrix to form a three-dimensional interconnected phase of plastic crystals, and wherein the polymer composition exhibits an ionic conductivity of at least about 1.1 mS/cm at about 20° C. Also disclosed herein are electrochemical cells comprising the same and methods of making and using the same.