Lithium sulfide solid electrolyte material containing silver iodide and silver bromide and preparation method of lithium sulfide solid electrolyte material
A solid electrolyte, silver bromide technology, applied in solid electrolytes, electrolyte battery manufacturing, non-aqueous electrolytes, etc., can solve the problems of low battery coulombic efficiency, hinder lithium ion passing, difficult to maintain charge-discharge cycle, etc., to improve ion conduction. rate, and the effect of improving ion conductivity
Pending Publication Date: 2017-05-17
GUILIN ELECTRICAL EQUIP SCI RES INST
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The invention discloses a lithium sulfide solid electrolyte material containing silver iodide and silver bromide and a preparation method of the lithium sulfide solid electrolyte material. The preparation method comprises the following steps of (1) weighing 35%-50% of lithium sulfide and the balance of phosphorus sulfide according to mass percents under the condition of atmosphere protection and mixing evenly to obtain a lithium-sulfur-phosphorus ternary mixture; (2) taking the lithium-sulfur-phosphorus ternary mixture, the silver iodide which is equivalent to 2%-6% of the mass of the lithium-sulfur-phosphorus ternary mixture and the silver bromide which is equivalent to 1%-5% of the mass of the lithium-sulfur-phosphorus ternary mixture under the conditions of atmosphere protection and safe red light and carrying out ball-milling to obtain an amorphous lithium-sulfur-phosphorus mixture containing the silver iodide and the silver bromide; and (3) sealing the obtained amorphous lithium-sulfur-phosphorus mixture containing the silver iodide and the silver bromide under the conditions of atmosphere protection and red light, and heating the amorphous lithium-sulfur-phosphorus mixture to 100-200 DEG C under a vacuum condition or the condition of atmosphere protection for thermal treatment. According to the method disclosed by the invention, the ion conductivity of the obtained lithium sulfide solid electrolyte material can be effectively improved.
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Property | Measurement | Unit |
Granularity | 200.0 ~ 250.0 | mesh |
Diameter | 3.0 ~ 10.0 | mm |
Ionic conductivity | 0.00042 | s/cm |
tensile | MPa | |
Particle size | Pa | |
strength | 10 |
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