公开(公告)号：US09966634B2

公开(公告)日：2018-05-08

申请号：US14414748

申请日：2013-07-02

Applicant: Sumitomo Electric Industries, Ltd.

Inventor： Koma Numata ,  Shinji Inazawa ,  Koji Nitta ,  Shoichiro Sakai ,  Atsushi Fukunaga ,  Eiko Itani

IPC: H01M10/00 ,  H01M10/0568 ,  H01M10/054 ,  H01M2/16 ,  H01M10/0561 ,  H01M10/39 ,  H01M4/40 ,  H01M4/583 ,  H01M4/62 ,  H02J7/00 ,  H01M4/485 ,  H01M4/587

CPC classification number: H01M10/0568 ,  H01M2/1613 ,  H01M2/162 ,  H01M2/1653 ,  H01M4/40 ,  H01M4/485 ,  H01M4/583 ,  H01M4/587 ,  H01M4/622 ,  H01M10/054 ,  H01M10/0561 ,  H01M10/399 ,  H01M2220/10 ,  H01M2300/002 ,  H01M2300/0025 ,  H02J7/0052

Abstract: A heat resistant battery includes a positive electrode including a positive electrode current collector and a positive electrode active material fixed on the positive electrode current collector, wherein the positive electrode active material includes a sodium-containing transition metal compound capable of electrochemically storing and releasing a sodium ion; a negative electrode including a negative electrode current collector and a negative electrode active material fixed on the negative electrode current collector, wherein the negative electrode active material contains at least one selected from the group consisting of a sodium-containing titanium compound and a non-graphitizable carbon, each of the sodium-containing titanium compound and the non-graphitizable carbon capable of storing and releasing a sodium ion at a lower potential than a potential of the sodium-containing transition metal compound; and a sodium ion-conductive electrolyte provided at least between the positive electrode and the negative electrode, wherein the sodium ion-conductive electrolyte includes a salt of an organic cation having a pyrrolidinium skeleton and a bis(perfluoroalkyl sulfonyl)imide anion.

公开(公告)号：US09761871B2

公开(公告)日：2017-09-12

申请号：US14906872

申请日：2014-05-23

Applicant: Sumitomo Electric Industries, Ltd.

Inventor： Shoichiro Sakai ,  Atsushi Fukunaga ,  Koma Numata ,  Eiko Imazaki ,  Koji Nitta

IPC: H01M10/39 ,  H01M4/24 ,  H01M4/36 ,  H01M4/04 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/587 ,  H01M4/62 ,  H01M10/42 ,  H01M4/02

CPC classification number: H01M4/366 ,  H01M4/0404 ,  H01M4/0454 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/587 ,  H01M4/628 ,  H01M10/399 ,  H01M10/4235 ,  H01M2004/027

Abstract: An aspect of the present invention relates to a negative electrode for a sodium molten salt battery, the negative electrode including a negative electrode current collector and a negative electrode mixture layer arranged on a surface of the negative electrode current collector, the negative electrode mixture layer including negative electrode active material particles and a film arranged on a surface of each of the negative electrode active material particles, the negative electrode active material particles containing hard carbon, and the film containing a sodium-containing sulfide.

公开(公告)号：US20170047614A1

公开(公告)日：2017-02-16

申请号：US15307195

申请日：2015-04-16

Applicant: Sumitomo Electric Industries, Ltd.

Inventor： Shoichiro Sakai ,  Atsushi Fukunaga ,  Koma Numata ,  Eiko Imazaki ,  Koji Nitta

IPC: H01M10/0568 ,  H01M2/02 ,  H01M2/04 ,  H01M2/06 ,  H01M4/131 ,  H01M4/133 ,  H01M4/1391 ,  H01M4/1393 ,  H01M4/04 ,  H01M4/485 ,  H01M4/587 ,  H01M4/62 ,  H01M4/66 ,  H01M2/16 ,  H01M2/08 ,  H01M10/054

CPC classification number: H01M10/0568 ,  H01M2/024 ,  H01M2/043 ,  H01M2/06 ,  H01M2/08 ,  H01M2/166 ,  H01M4/0404 ,  H01M4/0435 ,  H01M4/131 ,  H01M4/133 ,  H01M4/1391 ,  H01M4/1393 ,  H01M4/485 ,  H01M4/587 ,  H01M4/622 ,  H01M4/623 ,  H01M4/625 ,  H01M4/661 ,  H01M10/054 ,  H01M10/058 ,  H01M10/39 ,  H01M2004/027 ,  H01M2004/028 ,  H01M2220/10 ,  H01M2220/20 ,  H01M2300/0025 ,  H01M2300/0045 ,  H01M2300/0091

Abstract: A sodium ion secondary battery includes an electrode group including a positive electrode and a negative electrode; an electrolyte, the electrode group being impregnated with the electrolyte; a case including a container with an opening portion and a sealing plate that closes the opening portion: and one or more insulating members, in which the electrolyte contains a molten salt, the molten salt contains cations and anions, the cations include a sodium ion and an organic cation, and all the insulating members are composed of a fluorine atom-free material.

Abstract translation: 钠离子二次电池包括具有正极和负极的电极组， 电解质，电极组被电解液浸渍; 包括具有开口部分的容器和封闭开口部分的密封板的壳体以及电解质包含熔融盐的一个或多个绝缘构件，所述熔融盐包含阳离子和阴离子，所述阳离子包括钠离子和 有机阳离子，所有绝缘构件均由无氟原子构成。

公开(公告)号：US20170025865A1

公开(公告)日：2017-01-26

申请号：US15039460

申请日：2014-11-17

Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.

Inventor： Eiko Imazaki ,  Koji Nitta ,  Shoichiro Sakai ,  Atsushi Fukunaga ,  Koma Numata

IPC: H02J7/00 ,  H01M10/44 ,  H01M10/48 ,  H01M4/587 ,  H01M10/054 ,  H01M10/39 ,  H01M4/525 ,  H01M10/46

CPC classification number: H02J7/007 ,  H01M4/485 ,  H01M4/525 ,  H01M4/587 ,  H01M10/054 ,  H01M10/056 ,  H01M10/399 ,  H01M10/443 ,  H01M10/46 ,  H01M10/486 ,  H01M2300/002 ,  H01M2300/0025 ,  H01M2300/0048 ,  H02J7/0042 ,  H02J7/0077 ,  H02J7/0091 ,  H02J7/045 ,  H02J7/047

Abstract: A molten-salt battery includes a positive electrode including a positive-electrode active material that reversibly occludes and releases sodium, a negative electrode including a negative-electrode active material that reversibly occludes and releases sodium, a separator disposed between the positive electrode and the negative electrode, and a molten-salt electrolyte. The molten-salt electrolyte contains an ionic liquid in an amount of 90% by mass or more. The ionic liquid contains a first salt and a second salt. The first salt contains a sodium ion which is a first cation, and a first anion. The second salt contains an organic cation which is a second cation, and a second anion. The positive-electrode active material contains a composite oxide having a layered O3-type crystal structure and containing Na, Fe, and Co. An amount of Co relative to a total of Fe and Co contained in the composite oxide is 40 to 60 atomic percent.

Abstract translation: 熔融盐电池包括：正极，其包括可逆地封闭并释放钠的正极活性物质，包含可逆地封闭并释放钠的负极活性物质的负极;设置在正极和负极之间的隔膜 电极和熔盐电解质。 熔融盐电解质含有90质量％以上的离子液体。 离子液体含有第一盐和第二盐。 第一盐含有作为第一阳离子的钠离子和第一阴离子。 第二盐含有作为第二阳离子的有机阳离子和第二阴离子。 正极活性物质含有具有层状O 3型晶体结构且含有Na，Fe，Co的复合氧化物。复合氧化物中所含的Co相对于Fe和Co的总量为40〜60原子％ 。

公开(公告)号：US20150295279A1

公开(公告)日：2015-10-15

申请号：US14648074

申请日：2013-10-15

Applicant: Sumitomo Electric Industries, Ltd.

Inventor： Koma Numata ,  Shinji Inazawa ,  Koji Nitta ,  Shoichiro Sakai ,  Atsushi Fukunaga ,  Eiko Imazaki

IPC: H01M10/39 ,  H01M10/38

CPC classification number: H01M10/399 ,  H01M10/38 ,  H01M2300/0045 ,  H01M2300/0054

Abstract: A molten salt battery comprising a positive electrode, a negative electrode, a separator interposed between the positive electrode and the negative electrode, and an electrolyte, wherein the electrolyte includes a molten salt, the molten salt contains at least sodium ions, and the moisture content We1 in the molten salt is 300 ppm or less in terms of mass ratio.

Abstract translation: 一种熔融盐电池，其特征在于，包括正极，负极，夹在所述正极和所述负极之间的隔膜以及电解质，所述电解质包含熔融盐，所述熔融盐至少含有钠离子，所述水分含量 熔融盐中的We1以质量比计为300ppm以下。

公开(公告)号：US20150229001A1

公开(公告)日：2015-08-13

申请号：US14422189

申请日：2013-08-12

Applicant: Sumitomo Electric Industries, Ltd. ,  KYOTO UNIVERSITY

Inventor： Eiko Itani ,  Shinji Inazawa ,  Koji Nitta ,  Shouichirou Sakai ,  Atsushi Fukunaga ,  Koma Numata ,  Rika Hagiwara ,  Toshiyuki Nohira ,  Kazuhiko Matsumoto

IPC: H01M10/056

CPC classification number: H01M10/056 ,  H01M10/054 ,  H01M2300/0022 ,  H01M2300/0045 ,  H01M2300/0091

Abstract: As a molten salt composition lacking a clear melting point and including a molten salt that can be suitably used as an electrolytic solution of a secondary battery, there is provided a molten salt composition including a mixture of two or more kinds of molten salts which can be used as an electrolytic solution of a secondary battery. Particularly, provided is a molten salt composition comprising two kinds of molten salts each having cations with ion diameters different from each other, composition ratio being set to a composition ratio within a range in which the molten salt composition lacks a melting point. Also provided is a secondary battery including the molten salt composition as an electrolytic solution, which can maintains an available state even when the temperature becomes low without rapidly becoming unavailable.

Abstract translation: 作为不具有明确熔点的熔融盐组合物，包括适合用作二次电池的电解液的熔融盐的方法，提供一种熔盐组合物，其包含两种以上的熔融盐的混合物， 用作二次电池的电解液。 特别地，提供了包含两种各自具有彼此离子直径不同的阳离子的熔融盐的熔融盐组合物，其组成比设定在熔融盐组合物缺乏熔点的范围内。 还提供了包括作为电解液的熔融盐组合物的二次电池，其即使在温度变低而不会迅速变得不可用的情况下也能保持可用状态。