Solid Oxide Electrolyte Composition for Lower-Temperature Synthesis
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Solution Overview
Problem
Current all-solid-state batteries (ASSBs) face challenges due to the need for high-temperature synthesis and expensive precursors, which hinder mass production and the development of solid electrolytes with high ionic conductivity and chemical stability.
Innovation Solution
The development of solid oxide electrolytes with the formula LixMgMOy, which exhibit high ionic conductivity and good chemical stability, synthesized at moderate temperatures using cost-effective materials, enabling large-scale production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high-temperature synthesis is used to produce solid electrolytes, then ionic conductivity and chemical stability are improved, but manufacturing cost and process complexity increase
Solution Approach 1:
The patent changes the synthesis temperature parameter from conventional high temperatures (900-1100°C) to moderate temperatures (600-800°C), achieving a balance between ionic conductivity and manufacturing feasibility. This parameter modification allows the electrolyte to maintain good chemical stability while reducing energy consumption and manufacturing costs
Solution Approach 2:
The patent employs composite material design by combining multiple oxide components (e.g., Li2SiO3-Al2O3, Li2SiO3-ZrO2, Li2SiO3-Y2O3) to create solid electrolytes with enhanced ionic conductivity and chemical stability. The composite structure allows each component to contribute its advantageous properties, achieving high performance at moderate synthesis temperatures
2Reliability
If expensive precursors are used to synthesize solid electrolytes, then ionic conductivity is improved, but mass production feasibility decreases
Solution Approach 1:
The patent replaces expensive precursors with cost-effective, readily available materials such as lithium carbonate, magnesium oxide, and common metal oxides (Al2O3, ZrO2, Y2O3). These inexpensive starting materials enable scalable production while maintaining the ionic conductivity required for battery applications
Solution Approach 2:
The patent modifies synthesis parameters including temperature (reduced to 600-800°C), time (optimized heating durations), and atmosphere (controlled oxygen partial pressure) to achieve complete reaction and desired crystal structure using low-cost precursors, thereby enabling mass production
3Ease of manufacture
If moderate synthesis temperatures are used, then manufacturing cost is reduced, but ionic conductivity may be compromised
Solution Approach 1:
The patent designs composite oxide electrolytes where the synergistic interaction between components (e.g., Li2SiO3 with Al2O3, ZrO2, or Y2O3) creates fast ion conduction pathways. The composite structure compensates for the lower thermal energy input by providing multiple conduction channels and optimized crystallographic pathways for lithium ion transport
Solution Approach 2:
The patent optimizes the local chemical environment and crystal structure to facilitate lithium ion conduction. By controlling the composition ratios and creating specific local structures (such as lithium-rich regions or optimized coordination environments), the electrolyte achieves high ionic conductivity despite moderate synthesis temperatures
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 oxide electrolytes demonstrate enhanced ionic conductivity and chemical stability, facilitating the advancement of ASSBs and making them more viable for large-scale production.
Implementation Method 1
A solid electrolyte with high ionic conductivity, low-cost precursors, and good chemical stability is one important aspect of ASSBs
Data Source
AI summary
In accordance with the purpose(s) of the present disclosure, as embodied and broadly described herein, the disclosure, in one aspect, relates to solid oxide electrolytes and the low-temperature synthesis of solid oxide electrolytes. The electrolytes have the general formula LixMgMOy and have relatively high ionic conductivity and relatively good chemical stability. The electrolytes can be a component of different types of batteries. The process of synthesizing the electrolytes can be done under moderate conditions with cost-effective materials, which is useful for large-scale production.