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METHOD FOR PREPARING HIGHLY ION CONDUCTIVE SOLID ELECTROLYTE FOR ALL-SOLID-STATE BATTERY

2025-06-21 01:384760下载
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A method of preparing a sintered solid electrolyte includes (a) coprecipitating a mixed solution including a lanthanum precursor, a zirconium precursor, a gallium precursor, a complexing agent, and a pH adjuster to provide a solid electrolyte precursor; (b) washing and drying the solid electrolyte precursor to provide a washed and dried solid electrolyte precursor; (c) mixing the washed and dried solid electrolyte precursor with a lithium source to provide a mixture; (d) calcining the mixture to provide a calcined solid electrolyte, which is a gallium (Ga)-doped lithium lanthanum zirconium oxide (LLZO), as represented by Chemical Formula 1 below, LixLayZrzGawO12,   Chemical Formula 1where 5≤x≤9, 2≤y≤4, 1≤z≤3, and 0
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