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Preparation method and application of LLZO solid electrolyte
The invention relates to the technical field of solid electrolyte ceramic materials, in particular to a preparation method and application of an LLZO solid electrolyte. The preparation method comprises the following specific implementation steps: 1, preparing an LLASMZ glass sintering aid according to a sol-gel process; 2, weighing a Li source, La2O3, Al2O3 and ZrO2 according to the stoichiometric ratio of the chemical composition Li < 7-3x > Al < x > La < 3 > Zr < 2 > O < 12 >, carrying out ball milling, and uniformly mixing; drying, sieving and pressing the uniformly mixed powder into blocks, and carrying out primary calcination in a silicon carbide rod furnace; 3, adding the primarily calcined powder, a glass sintering aid, water and a ball mill into a planetary ball mill for mechanical activation; 4, mixing the activated powder with a binder, and carrying out granulation and molding; and after glue discharging, covering the green body with LLZO powder with the same components, and placing the green body in a crucible for sealed sintering to obtain the required LLZO solid electrolyte. According to the preparation method, a mechanical activation auxiliary process is combined with the addition of the sintering aid, and the preparation method capable of enabling the LLZO solid electrolyte to obtain high stability and density at a low sintering temperature is developed.
本发明涉及固态电解质陶瓷材料技术领域，具体涉及到一种LLZO固态电解质的制备方法及其应用。具体实施步骤为1.按照溶胶凝胶工艺制备LLASMZ玻璃烧结助剂；2.按化学组成Li7‑3xAlxLa3Zr2O12的化学计量比称取Li源、La2O3、Al2O3和ZrO2，球磨并混合均匀；将混合均匀的混合粉体烘干、过筛并压制成块体在硅碳棒炉中进行初次煅烧；3.将初次煅烧后的粉体、玻璃烧结助剂、水和球磨子加入到行星式球磨机中进行机械活化；4.将活化后的粉体与粘结剂混合并进行造粒，成型；排胶后使用相同成份的LLZO粉体覆盖生坯，并置于坩埚中密封烧结即得到所需的LLZO固态电解质。本发明通过机械活化辅助工艺与添加烧结助剂相结合，开发了一种能够使LLZO固态电解质在低烧结温度下获得高稳定性与致密度的制备方法。
Preparation method and application of LLZO solid electrolyte
The invention relates to the technical field of solid electrolyte ceramic materials, in particular to a preparation method and application of an LLZO solid electrolyte. The preparation method comprises the following specific implementation steps: 1, preparing an LLASMZ glass sintering aid according to a sol-gel process; 2, weighing a Li source, La2O3, Al2O3 and ZrO2 according to the stoichiometric ratio of the chemical composition Li < 7-3x > Al < x > La < 3 > Zr < 2 > O < 12 >, carrying out ball milling, and uniformly mixing; drying, sieving and pressing the uniformly mixed powder into blocks, and carrying out primary calcination in a silicon carbide rod furnace; 3, adding the primarily calcined powder, a glass sintering aid, water and a ball mill into a planetary ball mill for mechanical activation; 4, mixing the activated powder with a binder, and carrying out granulation and molding; and after glue discharging, covering the green body with LLZO powder with the same components, and placing the green body in a crucible for sealed sintering to obtain the required LLZO solid electrolyte. According to the preparation method, a mechanical activation auxiliary process is combined with the addition of the sintering aid, and the preparation method capable of enabling the LLZO solid electrolyte to obtain high stability and density at a low sintering temperature is developed.
本发明涉及固态电解质陶瓷材料技术领域，具体涉及到一种LLZO固态电解质的制备方法及其应用。具体实施步骤为1.按照溶胶凝胶工艺制备LLASMZ玻璃烧结助剂；2.按化学组成Li7‑3xAlxLa3Zr2O12的化学计量比称取Li源、La2O3、Al2O3和ZrO2，球磨并混合均匀；将混合均匀的混合粉体烘干、过筛并压制成块体在硅碳棒炉中进行初次煅烧；3.将初次煅烧后的粉体、玻璃烧结助剂、水和球磨子加入到行星式球磨机中进行机械活化；4.将活化后的粉体与粘结剂混合并进行造粒，成型；排胶后使用相同成份的LLZO粉体覆盖生坯，并置于坩埚中密封烧结即得到所需的LLZO固态电解质。本发明通过机械活化辅助工艺与添加烧结助剂相结合，开发了一种能够使LLZO固态电解质在低烧结温度下获得高稳定性与致密度的制备方法。
Preparation method and application of LLZO solid electrolyte
一种LLZO固态电解质的制备方法及其应用
HUANG DUANPING (Autor:in) / MAO WANZI (Autor:in) / XU QING (Autor:in) / ZHANG FENG (Autor:in)
12.11.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
/
C03C
Chemische Zusammensetzungen für Gläser, Glasuren oder Emails
,
CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS
/
H01M
Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie
,
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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