A sulfide solid electrolyte, its preparation method and battery
By employing a simplified method for preparing sulfide solid electrolytes, including thermal reaction, tangential flow filtration, and spray drying, the problems of complex preparation processes and high energy consumption have been solved, enabling low-cost, high-efficiency industrial production and improving the electron transport performance of the battery.
CN118748269BActive Publication Date: 2025-10-31REASOLID (QUZHOU) NEW MATERIAL TECH CO LTD
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Patent Information
- Application Number
- CN202411062706.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-05
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2044-08-05
AI Technical Summary
Technical Problem
The existing preparation process of solid electrolytes is complicated, demanding, energy-intensive, costly and inefficient, making it difficult to adapt to industrial production.
Method used
The preparation method of sulfide solid electrolyte includes thermal reaction, tangential flow filtration and spray drying, which reduces the material drying temperature and uses tangential flow filtration and spray drying for continuous processing, thus simplifying the operation process.
Benefits of technology
It reduces energy consumption and cost, improves production efficiency, and the prepared sulfide solid electrolyte is soft and easy to contact with the electrode, thus improving the battery density and electron transport efficiency.
✦ Generated by Eureka AI based on patent content.
Abstract
This invention discloses a sulfide solid electrolyte, its preparation method, and a battery, belonging to the field of battery material technology. The preparation of the sulfide solid electrolyte includes: thermally reacting the raw materials for the preparation of the sulfide solid electrolyte; tangentially filtering the material obtained after the thermal reaction; and spray-drying the solid obtained from the tangential flow filtration. The raw materials include a first precursor, a second precursor, and a solvent. The first precursor includes lithium sulfide, and the second precursor includes at least one selected from phosphorus pentasulfide, silicon sulfide, germanium sulfide, tin sulfide, sodium sulfide, potassium sulfide, ammonium sulfide, calcium sulfide, and arsenic sulfide. This method has a relatively simple process flow and operation, low energy consumption and cost, and high production efficiency, making it suitable for industrial production. The sulfide solid electrolyte obtained in this way is relatively soft, making it easier to contact the positive and negative electrodes under extrusion conditions during the further preparation of the battery, improving density, thereby facilitating electron transport and reducing losses.
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