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METHOD FOR PRODUCING SOLID ELECTROLYTIC MATERIAL
PROBLEM TO BE SOLVED: To provide a method for producing a solid electrolytic material, that is a sintered compact having a dense structure and Li, La and Zr, in which method a molding aid such as an aluminum compound is not required and disappearance of lithium is suppressed during a firing step.SOLUTION: The method for producing the solid electrolytic material consisting of an oxide sintered compact comprises: a step (a) of press-compacting a compound oxide of La and Zr to form a powder compact; a step (b) of firing the powder compact formed at the step (a) in an oxygen-containing atmosphere to obtain a preliminary compact having La and Zr; a step (c) of coating the surface of the preliminary compact with a Li-containing compound particle; and a step (d) of heat-treating the preliminary compact coated with the Li-containing compound particle in the oxygen-containing atmosphere at the temperature equal to or lower than the melting point of a Li-containing compound. Since the solid electrolytic material can be molded into an optional shape, the solid electrolytic material is suitable as those of all-solid-state lithium ion secondary batteries.SELECTED DRAWING: Figure 3
【課題】アルミニウム化合物などの成形助剤が不要で、焼成中でのリチウムの消失が抑制され、かつ緻密な構造を有する、Ｌｉ、ＬａおよびＺｒを有する焼結体である固体電解質材料の製造方法を提供する。【解決手段】酸化物焼結体からなる固体電解質材料の製造方法であって、（ａ）ＬａおよびＺｒの酸化物を加圧成形して粉末成形体を形成する工程、（ｂ）工程（ａ）で形成された粉末成形体を酸素含有雰囲気下で焼成して、ＬａおよびＺｒを有する予備成形体を得る工程、（ｃ）前記予備成形体の表面にＬｉを含む化合物粒子をコーティングする工程、（ｄ）前記Ｌｉを含む化合物粒子がコーティングされた予備成形体を、酸素含有雰囲気下、前記Ｌｉを含む化合物の融点以下の温度で熱処理する工程、を有することを特徴とする固体電解質材料の製造方法である。固体電解質材料を任意の形状に成形できるため、全固体Ｌｉイオン二次電池の固体電解質材料として好適である。【選択図】図３
METHOD FOR PRODUCING SOLID ELECTROLYTIC MATERIAL
PROBLEM TO BE SOLVED: To provide a method for producing a solid electrolytic material, that is a sintered compact having a dense structure and Li, La and Zr, in which method a molding aid such as an aluminum compound is not required and disappearance of lithium is suppressed during a firing step.SOLUTION: The method for producing the solid electrolytic material consisting of an oxide sintered compact comprises: a step (a) of press-compacting a compound oxide of La and Zr to form a powder compact; a step (b) of firing the powder compact formed at the step (a) in an oxygen-containing atmosphere to obtain a preliminary compact having La and Zr; a step (c) of coating the surface of the preliminary compact with a Li-containing compound particle; and a step (d) of heat-treating the preliminary compact coated with the Li-containing compound particle in the oxygen-containing atmosphere at the temperature equal to or lower than the melting point of a Li-containing compound. Since the solid electrolytic material can be molded into an optional shape, the solid electrolytic material is suitable as those of all-solid-state lithium ion secondary batteries.SELECTED DRAWING: Figure 3
【課題】アルミニウム化合物などの成形助剤が不要で、焼成中でのリチウムの消失が抑制され、かつ緻密な構造を有する、Ｌｉ、ＬａおよびＺｒを有する焼結体である固体電解質材料の製造方法を提供する。【解決手段】酸化物焼結体からなる固体電解質材料の製造方法であって、（ａ）ＬａおよびＺｒの酸化物を加圧成形して粉末成形体を形成する工程、（ｂ）工程（ａ）で形成された粉末成形体を酸素含有雰囲気下で焼成して、ＬａおよびＺｒを有する予備成形体を得る工程、（ｃ）前記予備成形体の表面にＬｉを含む化合物粒子をコーティングする工程、（ｄ）前記Ｌｉを含む化合物粒子がコーティングされた予備成形体を、酸素含有雰囲気下、前記Ｌｉを含む化合物の融点以下の温度で熱処理する工程、を有することを特徴とする固体電解質材料の製造方法である。固体電解質材料を任意の形状に成形できるため、全固体Ｌｉイオン二次電池の固体電解質材料として好適である。【選択図】図３
METHOD FOR PRODUCING SOLID ELECTROLYTIC MATERIAL
固体電解質材料の製造方法
DOHATA HIDEO (author)
2016-05-16
Patent
Electronic Resource
Japanese
IPC:
H01B
CABLES
,
Kabel
/
C01G
Verbindungen der von den Unterklassen C01D oder C01F nicht umfassten Metalle
,
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
/
C04B
Kalk
,
LIME
/
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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