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    LITHIUM NIOBATE SOLUTION AND METHOD FOR PRODUCING SAME
    2.
    发明公开
    LITHIUM NIOBATE SOLUTION AND METHOD FOR PRODUCING SAME 审中-公开

    公开(公告)号：EP4332064A1

    公开(公告)日：2024-03-06

    申请号：EP22795310.6

    申请日：2022-03-10

    申请人： Mitsui Mining & Smelting Co., Ltd

    发明人： MOTONO, Ryuji ,  HARA, Syuhei ,  ARAKAWA, Daiki

    IPC分类号： C01G33/00 ,  H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58

    摘要： The lithium niobate solution of the invention is a lithium niobate solution containing lithium niobate having a molar ratio of lithium and niobium Li/Nb of 0.8 or more and 2.0 or less and ammonium ions, and the particle size (D50) of the lithium niobate in the lithium niobate solution according to dynamic light scattering is 100 nm or less. Moreover, the method for producing a lithium niobate solution of the invention has a step of producing an acidic niobium solution containing niobium, a step of obtaining a precipitate slurry containing niobium by inverse neutralization by adding the acidic niobium solution to ammonia water and a step of obtaining a lithium niobate solution by maintaining a mixture of the precipitate slurry containing niobium and lithium hydroxide at 20°C to 100°C with stirring.

    A METHOD FOR MANUFACTURING A CRYSTALLINE OXIDIC COMPOUND
    4.
    发明公开
    A METHOD FOR MANUFACTURING A CRYSTALLINE OXIDIC COMPOUND 审中-公开

    公开(公告)号：EP4186865A1

    公开(公告)日：2023-05-31

    申请号：EP21210780.9

    申请日：2021-11-26

    申请人： Karlsruher Institut für Technologie

    发明人： Mereacre, Valeriu ,  Binder, Joachim ,  Ehrenberg, Helmut

    IPC分类号： C01G23/00 ,  C01G25/00 ,  C01G27/00 ,  C01G31/00 ,  C01G33/00 ,  C01G35/00

    摘要： The present invention relates to a method for manufacturing a crystalline oxidic compound comprising an alkaline metal and a valve metal, to a crystalline oxidic compound as obtained by the method, and to its use as a ferroelectric material; as a coating material for electrode materials in batteries, specifically in solid-state batteries; or in digital printing, especially on a polymeric substrate.
    Herein, the method for manufacturing a crystalline oxidic compound comprising an alkaline metal and a valve metal comprises the following steps:
    a) mixing an alcoholate of an alkaline metal and an alcoholate of a valve metal in a composition of an oxygenated organic solvent and hydrogen peroxide at room temperature;
    b) adding an acid selected from at least one of nitric acid or hydrochloric acid at room temperature, whereby a solution is obtained;
    c) drying the solution at an elevated temperature of 50 °C to 150 °C, whereby a powder comprising the at least one crystalline oxidic compound comprising the alkaline metal and the valve metal is obtained.
    This manufacturing method operates at a low ambient working temperature, especially below 200 °C, and, thus, allows a direct manufacturing of crystalline oxidic compounds without interaction with a substrate and/or on a substrate which is not capable of tolerating higher temperatures during the manufacturing of crystalline oxidic compounds without deformation and/or deterioration. A further advantage of the low ambient working temperature is that a diffusion of elements from the at least one crystalline oxidic compound as coating material into the substrate can be avoided.

    NIOBATE COMPOUND AND NIOBIUM-CONTAINING SLURRY
    6.
    发明公开
    NIOBATE COMPOUND AND NIOBIUM-CONTAINING SLURRY 审中-公开

    公开(公告)号：EP4163256A1

    公开(公告)日：2023-04-12

    申请号：EP21818490.1

    申请日：2021-05-10

    申请人： Mitsui Mining & Smelting Co., Ltd.

    发明人： HARA, Syuhei ,  ARAKAWA, Daiki ,  KUMAGAI, Akinori

    IPC分类号： C01G33/00

    摘要： Provided is a novel niobate compound that has excellent reactivity with alkali metal salts and can be reacted with alkali metal salts at room temperature.
    The niobate compound has a ratio (first peak/second peak) of the intensity of a peak (first peak) having the highest intensity at 2θ = 9.4° ± 1.5° to the intensity of a peak (second peak) having the highest intensity at 2θ = 29.0° ± 1.5° being 1.3 or more in the X-ray diffraction pattern.