Electrolyte Material Having a Nasicon Structure for Solid-State Sodium Ion Batteries and Method for the Production Thereof

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This invention relates to a new electrolyte material with a NASICON (Sodium Super Ionic Conductor) structure for use in solid-state sodium-ion batteries. The material is based on a Na2+xScxZr2−x(SiO4)2(PO4) compound where part of the zirconium is replaced by scandium and sodium, resulting in a substantial improvement in sodium-ion conductivity. The patent also describes a cost-effective and scalable method for producing this material using readily available chemicals and simple equipment. The resulting electrolytes have high ionic conductivity and are ideal for use in solid-state sodium batteries and other electrochemical devices.

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• Solid-state sodium-ion batteries as a safer and more cost-effective alternative to lithium-ion batteries, particularly for large-scale energy storage.
• Electrolyte membranes for sodium-based battery cells in electric vehicles, renewable energy storage systems, and grid stabilization units.
• Components in sodium-ion conductive sensors or other electrochemical devices requiring highly conductive and stable solid electrolytes.
• Potential use in custom ceramics or coatings where ionic conductivity and mechanical/chemical stability are essential.

BenefitsContent extracted from patent full text and abstract with AI.

• Significantly improved sodium-ion conductivity compared to other NASICON materials, making sodium batteries more viable.
• Cost-effective and scalable production method, enabling large-scale manufacturing with basic laboratory or industrial equipment.
• Utilizes abundant, low-cost starting materials (sodium and scandium), reducing reliance on lithium and enabling broader adoption.
• Provides a safer alternative to liquid electrolytes, with less risk of fire and better thermal stability across a wide temperature range.
• High-density, phase-pure electrolyte with very small particle size, resulting in excellent performance and manufacturability.

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Patent Abstract

The invention relates to a method for producing electrolyte material having a NASICON structure based on a Na2+xScxZr2.x(Si04)2(P04) compound where 0 ≤ x