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Lithium lanthanum zirconium oxide-based solid electrolyte and preparation method thereof
The invention aims to provide a lithium lanthanum zirconium oxide-based solid electrolyte and a preparation method thereof. The preparation method of the lithium lanthanum zirconium oxide-based solidelectrolyte comprises the following steps: firstly, applying an aluminum nitrate solution to the surface of a lithium lanthanum zirconium oxide-based solid electrolyte for surface treatment, then applying a fluorine source solution for surface treatment, and forming an AlF3 coating layer on the surface of the lithium lanthanum zirconium oxide-based solid electrolyte through an in-situ chemical reaction, so as to obtain the lithium lanthanum zirconium oxide-based solid electrolyte coated with the AlF3 layer, and meanwhile, remove lithium carbonate on the surface of the lithium lanthanum zirconium oxide-based solid electrolyte. By means of the method for in-situ chemical synthesis of AlF3, the interface resistance of the solid electrolyte/metal lithium electrode can be effectively reduced, the air stability is remarkably improved, and the low interface resistance is still kept after the solid electrolyte/metal lithium electrode is placed in air for a long time. Moreover, the preparationmethod provided by the invention is simple and feasible, and the production cost can be reduced.
本发明的目的在于提供一种锂镧锆氧基固体电解质及其制备方法。本发明提供的锂镧锆氧基固体电解质的制备方法，先将硝酸铝溶液施加到锂镧锆氧系固体电解质表面处理，再施加氟源溶液进行表面处理，通过原位化学反应在锂镧锆氧系固体电解质表面形成AlF3包覆层，得到包覆了AlF3层的锂镧锆氧基固体电解质，并且同时可以去除锂镧锆氧基固体电解质表面的碳酸锂。通过上述原位化学合成AlF3的方法，能够有效降低固态电解质/金属锂电极的界面电阻，且显著提升空气稳定性，在空气中长时间放置后，仍保持较低的界面电阻。而且本发明提供的制备方法简单易行、能够降低生产成本。
Lithium lanthanum zirconium oxide-based solid electrolyte and preparation method thereof
The invention aims to provide a lithium lanthanum zirconium oxide-based solid electrolyte and a preparation method thereof. The preparation method of the lithium lanthanum zirconium oxide-based solidelectrolyte comprises the following steps: firstly, applying an aluminum nitrate solution to the surface of a lithium lanthanum zirconium oxide-based solid electrolyte for surface treatment, then applying a fluorine source solution for surface treatment, and forming an AlF3 coating layer on the surface of the lithium lanthanum zirconium oxide-based solid electrolyte through an in-situ chemical reaction, so as to obtain the lithium lanthanum zirconium oxide-based solid electrolyte coated with the AlF3 layer, and meanwhile, remove lithium carbonate on the surface of the lithium lanthanum zirconium oxide-based solid electrolyte. By means of the method for in-situ chemical synthesis of AlF3, the interface resistance of the solid electrolyte/metal lithium electrode can be effectively reduced, the air stability is remarkably improved, and the low interface resistance is still kept after the solid electrolyte/metal lithium electrode is placed in air for a long time. Moreover, the preparationmethod provided by the invention is simple and feasible, and the production cost can be reduced.
本发明的目的在于提供一种锂镧锆氧基固体电解质及其制备方法。本发明提供的锂镧锆氧基固体电解质的制备方法，先将硝酸铝溶液施加到锂镧锆氧系固体电解质表面处理，再施加氟源溶液进行表面处理，通过原位化学反应在锂镧锆氧系固体电解质表面形成AlF3包覆层，得到包覆了AlF3层的锂镧锆氧基固体电解质，并且同时可以去除锂镧锆氧基固体电解质表面的碳酸锂。通过上述原位化学合成AlF3的方法，能够有效降低固态电解质/金属锂电极的界面电阻，且显著提升空气稳定性，在空气中长时间放置后，仍保持较低的界面电阻。而且本发明提供的制备方法简单易行、能够降低生产成本。
Lithium lanthanum zirconium oxide-based solid electrolyte and preparation method thereof
一种锂镧锆氧基固体电解质及其制备方法
XU CHAOHE (author) / LU GUANJIE (author)
2021-01-12
Patent
Electronic Resource
Chinese
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