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Lithium-lanthanum-zirconium-oxygen solid electrolyte with densification promoted by pre-ceramic powder and preparation method of lithium-lanthanum-zirconium-oxygen solid electrolyte
The invention belongs to the technical field of solid electrolytes, and discloses a lithium lanthanum zirconium oxide solid electrolyte with densification promoted by pre-ceramic powder and a preparation method of the lithium lanthanum zirconium oxide solid electrolyte. The preparation method specifically comprises the following steps: (1) mixing a lithium source, a lanthanum source, a zirconium source and a tantalum source with an organic solvent, fully ball-milling and drying, performing high-temperature roasting to obtain roasted powder, mixing the roasted powder with the organic solvent, fully ball-milling and drying to obtain nano powder; (2) mixing a lithium source, a lanthanum source, a zirconium source and a tantalum source with an organic solvent, fully ball-milling and drying, performing high-temperature pre-ceramization to obtain pre-ceramization powder, and fully grinding to obtain pre-ceramization powder; and (3) mixing the nano powder and the pre-ceramization powder according to a certain mass ratio, carrying out compression molding, and sintering to obtain the lithium lanthanum zirconium oxide solid electrolyte. By mixing the pre-ceramic powder, the density of the solid electrolyte prepared under normal pressure is remarkably improved and reaches up to 99%, and the solid electrolyte has relatively high ionic conductivity which reaches up to 2 * 10 <-3 > S/cm at room temperature.
本发明属于固体电解质技术领域，公开了预陶瓷化粉料促进致密化的锂镧锆氧固体电解质及其制备方法。该制备方法具体包括以下步骤：(1)将锂源、镧源、锆源和钽源与有机溶剂混合，充分球磨干燥，经高温焙烧得到焙烧粉体，再将焙烧粉体与有机溶剂混合，充分球磨干燥，得到纳米粉料；(2)将锂源、镧源、锆源和钽源与有机溶剂混合，充分球磨干燥，经高温预陶瓷化，得到预陶瓷化粉体，充分研磨，得到预陶瓷化粉料；(3)将纳米粉料和预陶瓷化粉料按一定质量比混合，压制成型、烧结，得到所述锂镧锆氧固体电解质。本发明通过混合预陶瓷化粉料，常压下制备的固体电解质致密度得到了显著提高，高达99％，具有较高的离子电导率，室温下高达2×10‑3S/cm。
Lithium-lanthanum-zirconium-oxygen solid electrolyte with densification promoted by pre-ceramic powder and preparation method of lithium-lanthanum-zirconium-oxygen solid electrolyte
The invention belongs to the technical field of solid electrolytes, and discloses a lithium lanthanum zirconium oxide solid electrolyte with densification promoted by pre-ceramic powder and a preparation method of the lithium lanthanum zirconium oxide solid electrolyte. The preparation method specifically comprises the following steps: (1) mixing a lithium source, a lanthanum source, a zirconium source and a tantalum source with an organic solvent, fully ball-milling and drying, performing high-temperature roasting to obtain roasted powder, mixing the roasted powder with the organic solvent, fully ball-milling and drying to obtain nano powder; (2) mixing a lithium source, a lanthanum source, a zirconium source and a tantalum source with an organic solvent, fully ball-milling and drying, performing high-temperature pre-ceramization to obtain pre-ceramization powder, and fully grinding to obtain pre-ceramization powder; and (3) mixing the nano powder and the pre-ceramization powder according to a certain mass ratio, carrying out compression molding, and sintering to obtain the lithium lanthanum zirconium oxide solid electrolyte. By mixing the pre-ceramic powder, the density of the solid electrolyte prepared under normal pressure is remarkably improved and reaches up to 99%, and the solid electrolyte has relatively high ionic conductivity which reaches up to 2 * 10 <-3 > S/cm at room temperature.
本发明属于固体电解质技术领域，公开了预陶瓷化粉料促进致密化的锂镧锆氧固体电解质及其制备方法。该制备方法具体包括以下步骤：(1)将锂源、镧源、锆源和钽源与有机溶剂混合，充分球磨干燥，经高温焙烧得到焙烧粉体，再将焙烧粉体与有机溶剂混合，充分球磨干燥，得到纳米粉料；(2)将锂源、镧源、锆源和钽源与有机溶剂混合，充分球磨干燥，经高温预陶瓷化，得到预陶瓷化粉体，充分研磨，得到预陶瓷化粉料；(3)将纳米粉料和预陶瓷化粉料按一定质量比混合，压制成型、烧结，得到所述锂镧锆氧固体电解质。本发明通过混合预陶瓷化粉料，常压下制备的固体电解质致密度得到了显著提高，高达99％，具有较高的离子电导率，室温下高达2×10‑3S/cm。
Lithium-lanthanum-zirconium-oxygen solid electrolyte with densification promoted by pre-ceramic powder and preparation method of lithium-lanthanum-zirconium-oxygen solid electrolyte
预陶瓷化粉料促进致密化的锂镧锆氧固体电解质及其制备方法
2024-09-10
Patent
Electronic Resource
Chinese
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