公开(公告)号：US12266827B2

公开(公告)日：2025-04-01

申请号：US17261111

申请日：2019-04-02

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Keiko Kosuge ,  Fumio Kato ,  Toshiyuki Shimizu ,  Yusuke Kawahara

IPC: H01M6/16 ,  H01M4/06 ,  H01M4/131 ,  H01M4/134 ,  H01M4/36 ,  H01M4/40 ,  H01M4/505 ,  H01M50/107

Abstract: A lithium primary cell includes an electrode group and a non-aqueous electrolytic solution. The electrode group includes a positive electrode, a negative electrode, and a separator, in which the positive electrode and the negative electrode are wound with the separator interposed therebetween. In the electrode group, an area where the positive electrode and the negative electrode face each other is 250 cm2 or more and 350 cm2 or less. The positive electrode includes a positive electrode mixture including manganese dioxide and a boron compound. The negative electrode includes lithium metal or a lithium alloy. The non-aqueous electrolytic solution includes ethylene carbonate. A content of the boron compound in the positive electrode is 0.5 parts by mass or more and 2 parts by mass or less in terms of boron with respect to 100 parts by mass of the positive electrode mixture. A content of the ethylene carbonate in the non-aqueous electrolytic solution is 1 part by mass or more and 10 parts by mass or less with respect to 100 parts by mass of the manganese dioxide.

公开(公告)号：US10128492B2

公开(公告)日：2018-11-13

申请号：US15033056

申请日：2014-12-04

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Kiyoshi Hayashi ,  Yasushi Nakamura ,  Fumio Kato

IPC: H01M4/32 ,  H01M4/38 ,  H01M4/52 ,  H01M4/62 ,  H01M4/36 ,  H01M10/30 ,  H01M4/66 ,  H01M4/02

Abstract: A positive electrode for alkaline storage batteries that enables to improve the active material utilization rate, while suppressing the self-discharge. The positive electrode for alkaline storage batteries includes a support having conductivity, and a positive electrode active material adhering to the support. The positive electrode active material includes particles of a nickel oxide. The particles of the nickel oxide include a first particle group having a particle diameter of 20 μm or more, and a second particle group having a particle diameter of less than 20 μm. The first particle group includes a first component with cracks, and a second component without cracks. The proportion of the first particle group in the particles of the nickel oxide is 15 vol % or more, and the proportion by number of the first component in the first particle group is 15% or more.

公开(公告)号：US09997776B2

公开(公告)日：2018-06-12

申请号：US14399145

申请日：2014-02-19

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Akiko Okabe ,  Hideaki Ohyama ,  Shinichi Sumiyama ,  Yasushi Nakamura ,  Kiyoshi Hayashi ,  Hiroki Takeshima ,  Fumio Kato

IPC: H01M4/38 ,  C22C19/03 ,  C22C30/00 ,  H01M10/30 ,  C22C1/04 ,  H01M10/26 ,  H01M4/02 ,  H01M2/16

CPC classification number: H01M4/383 ,  C22C1/0433 ,  C22C19/03 ,  C22C30/00 ,  H01M2/1653 ,  H01M4/385 ,  H01M10/26 ,  H01M10/30 ,  H01M2004/027 ,  H01M2220/20 ,  H01M2300/0014 ,  Y02E60/124

Abstract: Disclosed is an alloy powder for electrodes for nickel-metal hydride storage batteries having a high battery capacity and being excellent in life characteristics and high-temperature storage characteristics. The alloy powder includes a hydrogen storage alloy containing elements L, M, Ni, Co, and E. L includes La as an essential component. L includes no Nd, or when including Nd, the percentage of Nd in L is less than 5 mass %. The percentage of La in the hydrogen storage alloy is 23 mass % or less. M is Mg, Ca, Sr and/or Ba. A molar ratio α to a total of L and M is 0.045≤α≤0.133. A molar ratio x of Ni to the total of L and M is 3.5≤x≤4.32, and a molar ratio y of Co is 0.13≤y≤0.5. The molar ratios x and y, and a molar ratio z of E to the total of L and M satisfy 4.78≤x+y+z

公开(公告)号：US10305099B2

公开(公告)日：2019-05-28

申请号：US15031650

申请日：2014-10-07

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Hideaki Ohyama ,  Akiko Okabe ,  Fumio Kato

IPC: H01M10/24 ,  H01M4/38 ,  H01M4/36 ,  B22F1/00 ,  H01M2/14 ,  H01M4/24 ,  H01M10/28 ,  H01M10/34 ,  H01M4/02

Abstract: Provided is an electrode alloy powder that is useful to obtain a nickel-metal hydride storage battery having a high battery capacity and a reduced self-discharge. The alloy powder is: a mixture including particles of a first hydrogen storage alloy having an AB5-type crystal structure, and particles of at least one second hydrogen storage alloy selected from the group consisting of a hydrogen storage alloy a having an AB2-type crystal structure and a hydrogen storage alloy b having an AB3-type crystal structure, wherein an amount of the first hydrogen storage alloy included in the mixture is greater than 50 mass %.

公开(公告)号：US20150104703A1

公开(公告)日：2015-04-16

申请号：US14399145

申请日：2014-02-19

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Akiko Okabe ,  Hideaki Ohyama ,  Shinichi Sumiyama ,  Yasushi Nakamura ,  Kiyoshi Hayashi ,  Hiroki Takeshima ,  Fumio Kato

IPC: H01M4/38 ,  H01M10/26 ,  H01M10/30 ,  C22C19/03 ,  C22C30/00

CPC classification number: H01M4/383 ,  C22C1/0433 ,  C22C19/03 ,  C22C30/00 ,  H01M2/1653 ,  H01M4/385 ,  H01M10/26 ,  H01M10/30 ,  H01M2004/027 ,  H01M2220/20 ,  H01M2300/0014 ,  Y02E60/124

Abstract: Disclosed is an alloy powder for electrodes for nickel-metal hydride storage batteries having a high battery capacity and being excellent in life characteristics and high-temperature storage characteristics. The alloy powder includes a hydrogen storage alloy containing elements L, M, Ni, Co, and E. L includes La as an essential component. L includes no Nd, or when including Nd, the percentage of Nd in L is less than 5 mass %. The percentage of La in the hydrogen storage alloy is 23 mass % or less. M is Mg, Ca, Sr and/or Ba. A molar ratio α to a total of L and M is 0.045≦α≦0.133. A molar ratio x of Ni to the total of L and M is 3.5≦x≦4.32, and a molar ratio y of Co is 0.13≦y≦0.5. The molar ratios x and y, and a molar ratio z of E to the total of L and M satisfy 4.78≦x+y+z

Abstract translation: 公开了一种具有高电池容量并且具有优异的寿命特性和高温存储特性的镍氢蓄电池用电极用合金粉末。 合金粉末包括含有元素L，M，Ni，Co和E的储氢合金.L包括La作为必需组分。 L不包括Nd，或者当包含Nd时，L中的Nd的百分比小于5质量％。 储氢合金中的La的比例为23质量％以下。 M是Mg，Ca，Sr和/或Ba。 与L和M的总和的摩尔比α为0.045＆amp; nlE;α＆nlE; 0.133。 Ni与L和M的总量的摩尔比x为3.5＆nlE; x＆nlE; 4.32，Co的摩尔比y为0.13＆nlE; y＆nlE; 0.5。 摩尔比x和y以及E与L和M的总和的摩尔比z满足4.78＆nlE; x + y + z <5.03。