PRODUCTION OF LITHIUM PHOSPHOTITANATE SINTERED BODY

PROBLEM TO BE SOLVED: To obtain a high lithium ion conductive inorganic solid electrolyte in a short-time single stage at a low temperature by supplying a DC pulsating current to a powdery mixture of an Li feed source, a Ti feed source and a P feed source under pressure. SOLUTION: As a Li feed sourc...

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Hauptverfasser:	TABUCHI MITSUHARU, TAKEUCHI TOMONARI, ATO KAZUAKI, KAGEYAMA HIROYUKI
Format:	Patent
Sprache:	eng
Schlagworte:	ARTIFICIAL STONE BASIC ELECTRIC ELEMENTS CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE ELECTRICITY GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS LIME, MAGNESIA METALLURGY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY REFRACTORIES SLAG TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To obtain a high lithium ion conductive inorganic solid electrolyte in a short-time single stage at a low temperature by supplying a DC pulsating current to a powdery mixture of an Li feed source, a Ti feed source and a P feed source under pressure. SOLUTION: As a Li feed source is exemplified, e.g. LiOH, LiOH.H2O, Li2CO3 or LiNO3. As a Ti feed source is exemplified, e.g. H2TiO3, TiO2 or Ti(SO4)2. As a P feed source is, e.g. H3PO4, Li3PO4 or H3PO2. The molar ratio among the Li, Ti and P feed sources is preferably about (5-20):(10-30):(25-45). A powdery starting material mixture is prepared by mixing and agitating the powdery Li, Ti and P feed sources in an aqueous medium. An about 200-500A DC pulsating current is supplied to the mixture under about 5-40 MPa pressure and the mixture is brought into solid phase reaction at about 250-1,000 deg.C for about 2-10 min.