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METHOD FOR MANUFACTURING LATP CRYSTAL GRAINS FOR SOLID ELECTROLYTE OF SECONDARY BATTERY
To provide a method for manufacturing LATP crystal grains, which enables the development of excellent lithium ion conduction and is useful as a solid electrolyte of a secondary battery, by realizing not only the microfabrication of LATP crystal grains, but also high purity.SOLUTION: A method for manufacturing LATP crystal grains for a solid electrolyte of a secondary battery comprises the following steps (I) to (III). The step (I) is arranged to mix a titanium compound, a raw material compound selected from three kinds of compound, i.e. a lithium compound, an aluminum compound and a phosphate compound, and water to prepare a mixture solution which is pH5-9 at 25°C. The step (II) is arranged to subject the resultant mixture solution to a hydrothermal reaction of 100°C or above, and then rinse and dry a product of the hydrothermal reaction and then, thereby obtaining a precursor mixture. The step (III) is arranged to sinter the precursor mixture at 400-1000°C.SELECTED DRAWING: Figure 1
【課題】ＬＡＴＰ結晶粒子の微細化のみならず、高純度化をも実現することにより、優れたリチウムイオン伝導性を発現し得る、二次電池の固体電解質として有用なＬＡＴＰ結晶粒子の製造方法を提供する。【解決手段】次の工程（Ｉ）〜（III）：（Ｉ）チタン化合物と、リチウム化合物、アルミニウム化合物及びリン酸化合物の３種から選ばれる原料化合物と、水とを混合して、２５℃におけるｐＨが５〜９である混合液を調製する工程（II）得られた混合液を１００℃以上の水熱反応に付した後、水熱反応生成物を洗浄し、次いで乾燥して、前駆体混合物を得る工程（III）得られた前駆体混合物を４００℃〜１０００℃で焼成する工程を備える、二次電池の固体電解質用ＬＡＴＰ結晶粒子の製造方法。【選択図】図１
METHOD FOR MANUFACTURING LATP CRYSTAL GRAINS FOR SOLID ELECTROLYTE OF SECONDARY BATTERY
To provide a method for manufacturing LATP crystal grains, which enables the development of excellent lithium ion conduction and is useful as a solid electrolyte of a secondary battery, by realizing not only the microfabrication of LATP crystal grains, but also high purity.SOLUTION: A method for manufacturing LATP crystal grains for a solid electrolyte of a secondary battery comprises the following steps (I) to (III). The step (I) is arranged to mix a titanium compound, a raw material compound selected from three kinds of compound, i.e. a lithium compound, an aluminum compound and a phosphate compound, and water to prepare a mixture solution which is pH5-9 at 25°C. The step (II) is arranged to subject the resultant mixture solution to a hydrothermal reaction of 100°C or above, and then rinse and dry a product of the hydrothermal reaction and then, thereby obtaining a precursor mixture. The step (III) is arranged to sinter the precursor mixture at 400-1000°C.SELECTED DRAWING: Figure 1
【課題】ＬＡＴＰ結晶粒子の微細化のみならず、高純度化をも実現することにより、優れたリチウムイオン伝導性を発現し得る、二次電池の固体電解質として有用なＬＡＴＰ結晶粒子の製造方法を提供する。【解決手段】次の工程（Ｉ）〜（III）：（Ｉ）チタン化合物と、リチウム化合物、アルミニウム化合物及びリン酸化合物の３種から選ばれる原料化合物と、水とを混合して、２５℃におけるｐＨが５〜９である混合液を調製する工程（II）得られた混合液を１００℃以上の水熱反応に付した後、水熱反応生成物を洗浄し、次いで乾燥して、前駆体混合物を得る工程（III）得られた前駆体混合物を４００℃〜１０００℃で焼成する工程を備える、二次電池の固体電解質用ＬＡＴＰ結晶粒子の製造方法。【選択図】図１
METHOD FOR MANUFACTURING LATP CRYSTAL GRAINS FOR SOLID ELECTROLYTE OF SECONDARY BATTERY
二次電池の固体電解質用ＬＡＴＰ結晶粒子の製造方法
YAMASHITA HIROKI (author) / OGAMI TAKEAKI (author)
2019-12-26
Patent
Electronic Resource
Japanese
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