Anionic Polymer Solid Electrolyte for Low-Temperature Conductivity
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Solution Overview
Problem
Existing solid electrolyte materials face a decrease in ion conductivity when stored at low temperatures due to crystallization of plastic crystals and insufficient plastic crystal structure effects in molecular crystals.
Innovation Solution
A solid electrolyte material comprising a polymer electrolyte, an inorganic filler, and succinonitrile, where the polymer electrolyte includes an anionic polymer, with the inorganic filler being SiO2 or Al2O3, and a specific mass percentage to suppress crystallization and maintain ion conductivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a plastic crystal is used to improve ion conductivity of the solid electrolyte, then high ion conductivity can be exhibited even in a low temperature range, but the plastic crystal is crystallized when the solid electrolyte is stored for a long term at low temperature, resulting in a decrease in ion conductivity
Solution Approach 1:
The patent introduces an inorganic filler as an intermediary substance that interacts with the plastic crystal to prevent its crystallization. The inorganic filler acts as a mediator between the plastic crystal and the storage conditions, stabilizing the plastic crystal structure and preventing harmful crystallization during long-term low temperature storage, thereby maintaining high ion conductivity.
Solution Approach 2:
The patent creates a composite solid electrolyte material consisting of a polymer electrolyte, a plastic crystal, and an inorganic filler. This composite structure combines the high ion conductivity of the plastic crystal with the stabilizing effect of the inorganic filler, achieving both improved ion conductivity and resistance to crystallization during storage.
2Ease of operation
If a molecular crystal is used to provide flexibility and ion conductivity, then the solid electrolyte exhibits good flexibility and ion conductivity, but a sufficient plastic crystal structure effect cannot be exerted
Solution Approach 1:
The patent merges three components - a polymer electrolyte providing flexibility, a plastic crystal providing high ion conductivity, and an inorganic filler providing stabilization. By combining these materials, the invention achieves both the flexibility needed for ease of operation and the sufficient plastic crystal structure effect for reliable high ion conductivity performance.
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 electrolyte material effectively suppresses a decrease in ion conductivity even when stored at low temperatures, maintaining high conductivity over time.
Implementation Method 1
the plastic crystal is crystallized when the solid electrolyte is stored for a long term at low temperature, resulting in a decrease in ion conductivity
Data Source
AI summary
A solid electrolyte material configured to suppress a decrease in ion conductivity, the solid electrolyte material comprising a polymer electrolyte, an inorganic filler and succinonitrile, the polymer electrolyte comprises an anionic polymer.