公开(公告)号：US10230108B2

公开(公告)日：2019-03-12

申请号：US14005368

申请日：2012-03-30

Applicant: Atsushi Sano ,  Keitaro Otsuki ,  Tomohiko Kato ,  Akiji Higuchi

Inventor： Atsushi Sano ,  Keitaro Otsuki ,  Tomohiko Kato ,  Akiji Higuchi

IPC: H01M4/58 ,  C01B25/45 ,  H01M4/136 ,  H01M10/0525

Abstract: An active material capable of improving the discharge capacity of a lithium ion secondary battery is provided. The active material of the present invention includes LiVOPO4 and one or more metal elements selected from the group consisting of Al, Nb, Ag, Mg, Mn, Fe, Zr, Na, K, B, Cr, Co, Ni, Cu, Zn, Si, Be, Ti, and Mo.

公开(公告)号：US20140004416A1

公开(公告)日：2014-01-02

申请号：US14005357

申请日：2012-03-30

Applicant: Atsushi Sano ,  Keitaro Otsuki ,  Tomohiko Kato ,  Akinobu Nojima ,  Akiji Higuchi

Inventor： Atsushi Sano ,  Keitaro Otsuki ,  Tomohiko Kato ,  Akinobu Nojima ,  Akiji Higuchi

IPC: H01M4/58 ,  C01B25/45

CPC classification number: C01B25/45 ,  H01M4/1391 ,  H01M4/1397 ,  H01M4/485 ,  H01M4/5825

Abstract: A method for manufacturing an active material, capable of improving the discharge capacity of a lithium ion secondary battery is provided. The method for manufacturing an active material according to the present invention includes a first step of heating a mixture solution including a lithium source, a phosphate source, a vanadium source, and water under pressure to generate a precursor in the mixture solution, and adjusting the pH of the mixture solution including the precursor to be 6 to 8; and a second step of heating the precursor at 425 to 650° C. after the first step to generate an active material.

Abstract translation: 提供了能够提高锂离子二次电池的放电容量的活性物质的制造方法。 本发明的活性物质的制造方法包括在压力下加热包含锂源，磷酸盐源，钒源和水的混合溶液以在混合溶液中生成前体的第一步骤， 包含前体的混合溶液的pH为6〜8; 以及在第一步骤之后在425至650℃下加热前体以产生活性材料的第二步骤。

公开(公告)号：US20130130106A1

公开(公告)日：2013-05-23

申请号：US13810464

申请日：2011-07-12

Applicant: Atsushi Sano ,  Keitaro Otsuki ,  Kouji Tokita ,  Tomohiko Kato ,  Akiji Higuchi

Inventor： Atsushi Sano ,  Keitaro Otsuki ,  Kouji Tokita ,  Tomohiko Kato ,  Akiji Higuchi

IPC: H01M4/131 ,  H01M4/04

CPC classification number: H01M4/131 ,  C01B25/45 ,  H01M4/0471 ,  H01M4/5825 ,  H01M10/052

Abstract: To provide an active material from which a sufficient discharge capacity is obtained, an electrode containing the active material, a lithium secondary battery including the electrode, and a method for making an active material. A method for making an active material includes a temperature elevation step of heating a mixture containing a lithium source, a pentavalent vanadium source, a phosphoric acid source, water, and a reductant in a hermetically sealed container at a temperature elevation rate T1 from 25° C. to 110° C. and then at a temperature elevation rate T2 from 110° C. to a designated temperature of 200° C. or more, in which T1>T2; T1=0.5 to 10° C./min; and T2=0.1 to 2.2° C./min.

Abstract translation: 为了提供从其获得足够的放电容量的活性材料，含有活性材料的电极，包括该电极的锂二次电池以及制造活性材料的方法。 制造活性物质的方法包括：将加热含有锂源，五价钒源，磷酸源，水和还原剂的混合物的温度升高步骤以25℃的升温速度T1在密闭容器中加热 然后在升温速度T2从110℃到200℃或更高的指定温度，其中T1> T2; T1 = 0.5〜10℃/ min; T2 = 0.1〜2.2℃/ min。

公开(公告)号：US20110135878A1

公开(公告)日：2011-06-09

申请号：US12929592

申请日：2011-02-02

Applicant: Nobuo Kimura ,  Yoshitaka Fujita ,  Norifumi Nakamoto ,  Motoyuki Toki ,  Akiji Higuchi ,  Kazuo Ono ,  Tomoya Hidaka ,  Hiroyuki Takeda

Inventor： Nobuo Kimura ,  Yoshitaka Fujita ,  Norifumi Nakamoto ,  Motoyuki Toki ,  Akiji Higuchi ,  Kazuo Ono ,  Tomoya Hidaka ,  Hiroyuki Takeda

IPC: B32B3/30 ,  B32B27/06 ,  C09D1/00 ,  C01B13/00

CPC classification number: C01B13/32 ,  C01G23/053 ,  C23C18/1216 ,  C23C18/122 ,  Y10T428/24355

Abstract: Dispersoids having metal-oxygen groups that are suitable for the production of metal oxide thin-films at a low temperature of 200° C. or below and for the production of homogeneous organic-inorganic hybrid materials. The dispersoid having metal-oxygen bonds may be obtained by mixing a metal compound having at least three hydrolyzable groups with at least 0.5 mole but less than 2 moles of water per mole of the metal compound in an organic solvent, in the absence of an acid, a base, and/or a dispersion stabilizer, and at a temperature at or below the temperature at which the metal compound begins to hydrolyze, then raising the temperature to at least the temperature at which hydrolysis begins.

Abstract translation: 具有适合于在200℃或更低的低温下生产金属氧化物薄膜并用于生产均相有机 - 无机杂化材料的金属 - 氧基的分散体。 具有金属 - 氧键的分散质可以通过在不存在酸的情况下，在有机溶剂中将具有至少三个可水解基团的金属化合物与每摩尔金属化合物相混合至少0.5摩尔但小于2摩尔的水 ，碱和/或分散稳定剂，并且在等于或低于金属化合物开始水解的温度的温度下，然后将温度升至至少水解开始的温度。

公开(公告)号：US20110052995A1

公开(公告)日：2011-03-03

申请号：US12868142

申请日：2010-08-25

Applicant: Atsushi SANO ,  Keitaro OTSUKI ,  Yosuke MIYAKI ,  Takeshi TAKAHASHI ,  Akiji HIGUCHI

Inventor： Atsushi SANO ,  Keitaro OTSUKI ,  Yosuke MIYAKI ,  Takeshi TAKAHASHI ,  Akiji HIGUCHI

IPC: H01M4/485 ,  C01B25/30 ,  B32B5/16

CPC classification number: H01M4/5825 ,  C01B25/45 ,  H01M2/0277 ,  H01M2/0287 ,  H01M4/0435 ,  H01M4/1397 ,  H01M4/382 ,  H01M10/0525 ,  H01M10/0585 ,  H01M2004/021 ,  Y10T428/2982

Abstract: A method for manufacturing an active material comprising: a hydrothermal synthesis step of heating under pressure, a mixture containing a lithium source, a vanadium source, a phosphoric acid source, water and a water-soluble polymer having a weight average molecular weight of from 200 to 100,000, wherein the ratio of the total mole number of repeating units of the whole water-soluble polymer to the mole number of the vanadium atoms is from 0.02 to 1.0, to produce a precursor of LiVOPO4 having a β-type crystal structure; and a firing step of heating the precursor of LiVOPO4 having a β-type crystal structure to obtain LiVOPO4 having a β-type crystal structure.

Abstract translation: 一种制造活性物质的方法，包括：在压力下加热的水热合成步骤，含有锂源，钒源，磷酸源，水和重均分子量为200的水溶性聚合物的混合物 至100,000，其中整个水溶性聚合物的重复单元的总摩尔数与钒原子的摩尔数的比率为0.02至1.0，以产生具有“b”型晶体结构的LiVOPO 4的前体; 以及加热具有“b”型晶体结构的LiVOPO4的前体以获得具有“b”型晶体结构的LiVOPO 4的烧制步骤。

公开(公告)号：US20100233058A1

公开(公告)日：2010-09-16

申请号：US12723041

申请日：2010-03-12

Applicant: Atsushi SANO ,  Keitaro OTSUKI ,  Yousuke MIYAKI ,  Takeshi TAKAHASHI ,  Akiji HIGUCHI

Inventor： Atsushi SANO ,  Keitaro OTSUKI ,  Yousuke MIYAKI ,  Takeshi TAKAHASHI ,  Akiji HIGUCHI

IPC: C01B25/30

CPC classification number: C01B25/45 ,  H01G11/30 ,  H01M4/131 ,  H01M4/5825 ,  Y02E60/13

Abstract: The present invention provides a method of manufacturing an active material which can form an electrochemical device excellent in discharge capacity. The method of manufacturing an active material in accordance with the present invention comprises a hydrothermal synthesis step of heating a mixture including a lithium compound, a metal compound containing one species selected from the group consisting of Fe, Mn, Co, Ni, and V, a phosphorus compound, and water within a reactor while keeping an internal pressure of the reactor at 0.3 MPa or lower by ventilating the inside of the reactor to the outside, and closing the reactor at a time when the temperature of the mixture reaches 100 to 150° C.; and a firing step of firing the mixture after the hydrothermal synthesis step.

Abstract translation: 本发明提供一种能够形成放电容量优异的电化学装置的活性物质的制造方法。 根据本发明的制备活性材料的方法包括水热合成步骤，其加热包含锂化合物，含有选自Fe，Mn，Co，Ni和V中的一种的金属化合物的混合物， 磷化合物和反应器内的水，同时通过将反应器内部通风到外部将反应器的内部压力保持在0.3MPa或更低，并且在混合物的温度达到100至150℃时关闭反应器 C。; 以及在水热合成步骤之后焙烧该混合物的焙烧步骤。

公开(公告)号：US20110052992A1

公开(公告)日：2011-03-03

申请号：US12855976

申请日：2010-08-13

Applicant: Atsushi SANO ,  Keitaro OTSUKI ,  Yosuke MIYAKI ,  Takeshi TAKAHASHI ,  Akiji HIGUCHI

Inventor： Atsushi SANO ,  Keitaro OTSUKI ,  Yosuke MIYAKI ,  Takeshi TAKAHASHI ,  Akiji HIGUCHI

IPC: H01M4/485 ,  C01B25/30

CPC classification number: H01M4/5825 ,  C01B25/45 ,  H01M10/0525 ,  Y10T428/298

Abstract: An active material which can improve the discharge capacity of a lithium-ion secondary battery is provided. The active material of the present invention contains a rod-shaped particle group having a β-type crystal structure of LiVOPO4. The particle group has an average minor axis length S of 1 to 5 μm, an average major axis length L of 2 to 20 μm, and L/S of 2 to 10.

Abstract translation: 提供了能够提高锂离子二次电池的放电容量的活性物质。 本发明的活性物质含有具有LiVOPO4的“b”型晶体结构的棒状粒子群。 粒子群的平均短轴长S为1〜5μm，平均长轴长L为2〜20μm，L / S为2〜10。

公开(公告)号：US08936871B2

公开(公告)日：2015-01-20

申请号：US12568075

申请日：2009-09-28

Applicant: Atsushi Sano ,  Keitaro Otsuki ,  Yosuke Miyaki ,  Takeshi Takahashi ,  Akiji Higuchi

Inventor： Atsushi Sano ,  Keitaro Otsuki ,  Yosuke Miyaki ,  Takeshi Takahashi ,  Akiji Higuchi

IPC: H01M4/02 ,  C01B25/45 ,  C01B25/37 ,  H01M4/58 ,  H01M4/136 ,  H01M10/052

CPC classification number: C01B25/45 ,  C01B25/37 ,  H01M4/136 ,  H01M4/5825 ,  H01M10/052 ,  Y10T428/2982

Abstract: An active material contains a triclinic LiVOPO4 crystal particle, while the crystal particle has a spherical form and an average particle size of 20 to 200 nm.

Abstract translation: 活性材料含有三斜晶LiVOPO4晶体颗粒，而晶体颗粒具有球形，平均粒径为20-200nm。

公开(公告)号：US20140004417A1

公开(公告)日：2014-01-02

申请号：US14005368

申请日：2012-03-30

Applicant: Atsushi Sano ,  Keitaro Otsuki ,  Tomohiko Kato ,  Akiji Higuchi

Inventor： Atsushi Sano ,  Keitaro Otsuki ,  Tomohiko Kato ,  Akiji Higuchi

IPC: H01M4/58 ,  C01B25/45

CPC classification number: H01M4/5825 ,  C01B25/45 ,  H01M4/136 ,  H01M10/0525

Abstract: An active material capable of improving the discharge capacity of a lithium ion secondary battery is provided. The active material of the present invention includes LiVOPO4 and one or more metal elements selected from the group consisting of Al, Nb, Ag, Mg, Mn, Fe, Zr, Na, K, B, Cr, Co, Ni, Cu, Zn, Si, Be, Ti, and Mo.

Abstract translation: 提供能够提高锂离子二次电池的放电容量的活性物质。 本发明的活性物质包括LiVOPO4和一种或多种选自Al，Nb，Ag，Mg，Mn，Fe，Zr，Na，K，B，Cr，Co，Ni，Cu，Zn ，Si，Be，Ti和Mo。

公开(公告)号：US20100233545A1

公开(公告)日：2010-09-16

申请号：US12723101

申请日：2010-03-12

Applicant: Atsushi SANO ,  Keitaro OTSUKI ,  Yousuke MIYAKI ,  Takeshi TAKAHASHI ,  Akiji HIGUCHI

Inventor： Atsushi SANO ,  Keitaro OTSUKI ,  Yousuke MIYAKI ,  Takeshi TAKAHASHI ,  Akiji HIGUCHI

IPC: H01M4/48 ,  H01M4/88 ,  H01M4/485

CPC classification number: H01M4/131 ,  C01B25/45 ,  H01M4/5825 ,  H01M4/625 ,  Y10T428/2982 ,  Y10T428/2991

Abstract: The first aspect of the invention provides a method of manufacturing an active material capable of selectively synthesizing β-LiVOPO4. The method of manufacturing an active material in accordance with the first aspect comprises a hydrothermal synthesis step of heating a mixture containing a lithium source, a phosphate source, a vanadium source, and water and having a pH of 7 or less; and a firing step of firing the mixture after being heated under pressure in the hydrothermal synthesis step. The second aspect of the invention provides an active material capable of attaining a sufficient discharge capacity at a high discharge current density, an electrode containing the same, and a lithium-ion secondary battery containing the electrode. The active material in accordance with the second aspect contains an active material particle mainly composed of LiVOPO4 having a β-type crystal structure and a plurality of hemispherical carbon particles, supported on a surface of the active material particle, having a height of 5 to 20 nm, and has an average primary particle size of 50 to 1000 nm.

Abstract translation: 本发明的第一方面提供了一种能够选择性地合成一种-LiVOPO4的活性材料的制造方法。 根据第一方面的制造活性材料的方法包括水热合成步骤，其加热含有锂源，磷酸盐源，钒源和水并且pH为7以下的混合物; 以及在水热合成步骤中在加压下对混合物进行焙烧的烧成步骤。 本发明的第二方面提供能够以高放电电流密度获得足够的放电容量的活性材料，含有该放电电容的电极和含有该电极的锂离子二次电池。 根据第二方面的活性物质包含主要由LiVOPO4构成的活性物质粒子，该活性物质粒子具有负载在活性物质粒子的表面上的具有“b”型晶体结构的多个半球形碳粒子，其高度为5〜 20nm，平均一次粒径为50〜1000nm。