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Preparation method of aluminum-containing compound coated LLZTO ceramic
The invention provides a preparation method of LLZTO ceramic coated with an aluminum-containing compound. The preparation method comprises the following steps: adding LiOH into LLZTO powder; carrying out ball milling in a ZrO2 ball milling tank; drying by using a vacuum drying oven, pressing into a block body by using a mold, and roasting the block body to form an LLZTO phase; grinding the phase-formed block, carrying out wet grinding by using the ZrO2 ball-milling tank again, and drying to obtain aluminum-coated LLZTO powder; and preparing a biscuit by using a mold, and sintering to obtain the LLZTO ceramic chip coated with the aluminum-containing compound. The aluminum-containing compound is introduced, a uniform coating layer is formed after roasting, and the high-performance LLZTO solid electrolyte is sintered under the normal pressure condition in cooperation with a corresponding sintering strategy; a method for generating a coating layer in situ is used, so that the sintering assistance of a grain boundary in the sintering of the LLZTO ceramic wafer is achieved; through a sintering strategy matched with aluminum-containing compound coating, the LLZTO ceramic wafer with excellent performance can be sintered under a normal pressure condition.
本发明提供一种含铝化合物包覆LLZTO陶瓷的制备方法，包括将LiOH加入到LLZTO粉体中；并在ZrO2球磨罐球磨；使用真空烘箱烘干并使用模具压制成块体，将块体焙烧形成LLZTO相；将已成相的块体研碎，并再次使用ZrO2球磨罐湿磨、烘干得到铝包覆的LLZTO粉体；使用模具制成素坯并烧结得到含铝化合物包覆的LLZTO陶瓷片。本发明通过引入含铝化合物，焙烧后形成均匀包覆层，配合对应的烧结策略，取得了在常压条件下烧结出高性能LLZTO固态电解质；使用了原位生成包覆层的方法，达到对LLZTO陶瓷片烧结中晶界的助烧结；通过与含铝化合物包覆配套的烧结策略，能常压条件下烧结出性能优秀的LLZTO陶瓷片。
Preparation method of aluminum-containing compound coated LLZTO ceramic
The invention provides a preparation method of LLZTO ceramic coated with an aluminum-containing compound. The preparation method comprises the following steps: adding LiOH into LLZTO powder; carrying out ball milling in a ZrO2 ball milling tank; drying by using a vacuum drying oven, pressing into a block body by using a mold, and roasting the block body to form an LLZTO phase; grinding the phase-formed block, carrying out wet grinding by using the ZrO2 ball-milling tank again, and drying to obtain aluminum-coated LLZTO powder; and preparing a biscuit by using a mold, and sintering to obtain the LLZTO ceramic chip coated with the aluminum-containing compound. The aluminum-containing compound is introduced, a uniform coating layer is formed after roasting, and the high-performance LLZTO solid electrolyte is sintered under the normal pressure condition in cooperation with a corresponding sintering strategy; a method for generating a coating layer in situ is used, so that the sintering assistance of a grain boundary in the sintering of the LLZTO ceramic wafer is achieved; through a sintering strategy matched with aluminum-containing compound coating, the LLZTO ceramic wafer with excellent performance can be sintered under a normal pressure condition.
本发明提供一种含铝化合物包覆LLZTO陶瓷的制备方法，包括将LiOH加入到LLZTO粉体中；并在ZrO2球磨罐球磨；使用真空烘箱烘干并使用模具压制成块体，将块体焙烧形成LLZTO相；将已成相的块体研碎，并再次使用ZrO2球磨罐湿磨、烘干得到铝包覆的LLZTO粉体；使用模具制成素坯并烧结得到含铝化合物包覆的LLZTO陶瓷片。本发明通过引入含铝化合物，焙烧后形成均匀包覆层，配合对应的烧结策略，取得了在常压条件下烧结出高性能LLZTO固态电解质；使用了原位生成包覆层的方法，达到对LLZTO陶瓷片烧结中晶界的助烧结；通过与含铝化合物包覆配套的烧结策略，能常压条件下烧结出性能优秀的LLZTO陶瓷片。
Preparation method of aluminum-containing compound coated LLZTO ceramic
一种含铝化合物包覆LLZTO陶瓷的制备方法
LIU ZHENG (author) / WU DI (author) / FENG JIEYI (author) / ZHANG WENTING (author) / WU YIQIANG (author) / CHEN PENGFEI (author) / WANG ZHONGZHENG (author) / FAN DONGHUA (author)
2023-05-16
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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