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Low-temperature sintering method of garnet type inorganic solid electrolyte material
The invention provides a low-temperature sintering method of garnet type inorganic solid electrolyte material, namely a cold sintering technology, which comprises the following steps: dissolving LiCland InCl3 in a specific solvent to obtain a mixed solution; mixing the mixed solution with garnet type inorganic solid electrolyte ceramic powder to obtain a mixture; and then carrying out low-temperature hot press molding and annealing on the mixture to finish the cold sintering process. The required temperature in the low-temperature sintering is not higher than 400 DEG C, but the density and the lithium ion conductivity which can be achieved by sintering for 12 hours at 1200 DEG C in a traditional high-temperature solid-phase reaction method can be achieved. Compared with the prior art, themethod provided by the invention has the characteristics of low sintering temperature, short process period, low energy consumption and the like, and the electrolyte material prepared by the technology is high in density and excellent in lithium ion conductivity.
本发明提供了一种石榴石型无机固体电解质的低温烧结方法，即冷烧结技术，具体为：将LiCl和InCl溶解在特定溶剂中，得到混合溶液；将混合溶液与石榴石型无机固体电解质陶瓷粉末混合，得到混合物；随后对混合物进行低温热压成型与退火，即完成冷烧结过程。上述低温烧结中所需温度不高于400℃，却可以实现传统高温固相反应法1200℃下烧结12小时所能达到的致密度和锂离子电导率。与现有技术相比，本发明提供的方法具有烧结温度低，工艺周期短，能耗少等特点，且由该技术制得的电解质材料致密度高、锂离子电导率优异。
Low-temperature sintering method of garnet type inorganic solid electrolyte material
The invention provides a low-temperature sintering method of garnet type inorganic solid electrolyte material, namely a cold sintering technology, which comprises the following steps: dissolving LiCland InCl3 in a specific solvent to obtain a mixed solution; mixing the mixed solution with garnet type inorganic solid electrolyte ceramic powder to obtain a mixture; and then carrying out low-temperature hot press molding and annealing on the mixture to finish the cold sintering process. The required temperature in the low-temperature sintering is not higher than 400 DEG C, but the density and the lithium ion conductivity which can be achieved by sintering for 12 hours at 1200 DEG C in a traditional high-temperature solid-phase reaction method can be achieved. Compared with the prior art, themethod provided by the invention has the characteristics of low sintering temperature, short process period, low energy consumption and the like, and the electrolyte material prepared by the technology is high in density and excellent in lithium ion conductivity.
本发明提供了一种石榴石型无机固体电解质的低温烧结方法，即冷烧结技术，具体为：将LiCl和InCl溶解在特定溶剂中，得到混合溶液；将混合溶液与石榴石型无机固体电解质陶瓷粉末混合，得到混合物；随后对混合物进行低温热压成型与退火，即完成冷烧结过程。上述低温烧结中所需温度不高于400℃，却可以实现传统高温固相反应法1200℃下烧结12小时所能达到的致密度和锂离子电导率。与现有技术相比，本发明提供的方法具有烧结温度低，工艺周期短，能耗少等特点，且由该技术制得的电解质材料致密度高、锂离子电导率优异。
Low-temperature sintering method of garnet type inorganic solid electrolyte material
一种石榴石型无机固体电解质材料的低温烧结方法
MA CHENG (author) / WANG XINCHAO (author)
2020-09-15
Patent
Electronic Resource
Chinese
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