公开(公告)号：US11811069B2

公开(公告)日：2023-11-07

申请号：US17660194

申请日：2022-04-21

Applicant: FDK CORPORATION

Inventor： Minori Inoue ,  Takeshi Kajiwara ,  Shohei Unoki ,  Takahiro Endo ,  Shigekazu Yasuoka ,  Yoshikatsu Watanabe

IPC: H01M4/86 ,  H01M10/26 ,  H01M4/90 ,  H01M4/02

CPC classification number: H01M4/8615 ,  H01M4/9016 ,  H01M4/9075 ,  H01M10/26 ,  H01M2004/027 ,  H01M2004/8689 ,  H01M2300/0014

Abstract: A battery includes: an electrode group including an air electrode and a negative electrode that are stacked with a separator interposed therebetween; and a container housing the electrode group together with an alkaline electrolyte liquid. The air electrode includes a catalyst for an air electrode. This catalyst for an air electrode is a catalyst for an air electrode including an oxide containing at least bismuth (Bi), ruthenium (Ru), sodium (Na), and oxygen, and Na/(Ru+Bi+Na) representing an atomic ratio of the sodium to a sum of the bismuth, the ruthenium, and the sodium is 0.126 or more and 0.145 or less.

公开(公告)号：US11387496B2

公开(公告)日：2022-07-12

申请号：US17111750

申请日：2020-12-04

Applicant: FDK CORPORATION

Inventor： Takahiro Endo ,  Yuki Natsume ,  Takeo Nogami ,  Hidenori Tsuzuki

IPC: H01M4/06 ,  H01M4/24 ,  H01M4/42 ,  H01M4/50 ,  H01M6/02 ,  H01M6/08 ,  H01M10/28 ,  H01M6/18

Abstract: An alkaline battery is made by press-fitting a plurality of tubular positive electrode pellets inside of an open end of a cylindrical positive electrode can. The press-fitting is performed in such a manner as to stack the positive electrode pellets coaxially inside of and in contact with the positive electrode can, with gaps between adjacent positive electrode pellets. A separator is disposed inside of the tubular pellets, and a negative electrode mixture is placed inside of the separator. A negative electrode current collector is inserted into the negative electrode mixture, and the opening at the open end of the positive electrode can is sealed with a negative electrode terminal plate.

公开(公告)号：US20220359884A1

公开(公告)日：2022-11-10

申请号：US17660194

申请日：2022-04-21

Applicant: FDK CORPORATION

Inventor： Minori Inoue ,  Takeshi Kajiwara ,  Shohei Unoki ,  Takahiro Endo ,  Shigekazu Yasuoka ,  Yoshikatsu Watanabe

IPC: H01M4/86 ,  H01M10/26 ,  H01M4/90

Abstract: A battery includes: an electrode group including an air electrode and a negative electrode that are stacked with a separator interposed therebetween; and a container housing the electrode group together with an alkaline electrolyte liquid. The air electrode includes a catalyst for an air electrode. This catalyst for an air electrode is a catalyst for an air electrode including an oxide containing at least bismuth (Bi), ruthenium (Ru), sodium (Na), and oxygen, and Na/(Ru+Bi+Na) representing an atomic ratio of the sodium to a sum of the bismuth, the ruthenium, and the sodium is 0.126 or more and 0.145 or less.

公开(公告)号：US20240194863A1

公开(公告)日：2024-06-13

申请号：US18490638

申请日：2023-10-19

Applicant: FDK CORPORATION

Inventor： Soma Suzuki ,  Satoshi Murase ,  Tomomichi Yamaguchi ,  Takeshi Ito ,  Takahiro Endo

IPC: H01M4/38 ,  H01M4/24 ,  H01M4/48 ,  H01M10/24 ,  H01M12/06

CPC classification number: H01M4/38 ,  H01M4/244 ,  H01M4/48 ,  H01M10/24 ,  H01M12/065 ,  H01M2004/027

Abstract: A negative electrode for a zinc battery is disclosed. The negative electrode comprises: a plate-like negative electrode core member; and a negative electrode mixture layer formed on at least one main surface of the negative electrode core member. The negative electrode mixture layer contains a negative electrode mixture. The negative electrode mixture includes zinc particles formed from at least one of zinc and a zinc alloy. On the at least one main surface of the negative electrode core member, a number of deformed areas in which a change in a length in a thickness direction of the negative electrode core member with respect to a reference exceeds 50 μm is 2.4 or less per square millimeter.

公开(公告)号：US20230049091A1

公开(公告)日：2023-02-16

申请号：US17813566

申请日：2022-07-19

Applicant: FDK CORPORATION

Inventor： Shohei Unoki ,  Takeshi Kajiwara ,  Minori Inoue ,  Takahiro Endo ,  Shigekazu Yasuoka ,  Yoshikatsu Watanabe

IPC: H01M4/48 ,  H01M4/62

Abstract: A battery includes: an electrode group including an air electrode and a negative electrode that are stacked with a separator interposed therebetween; and a container housing the electrode group together with an alkaline electrolyte liquid. The air electrode includes a catalyst for an air secondary battery, and this catalyst for an air secondary battery includes a pyrochlore bismuth-ruthenium composite oxide having a full width at half maximum of a diffraction peak corresponding to a (222) face obtained by a powder X-ray diffraction method using CuKα rays as X-rays, of 0.350 deg or larger and 0.713 deg or smaller.

公开(公告)号：US11495804B2

公开(公告)日：2022-11-08

申请号：US16781192

申请日：2020-02-04

Applicant: FDK CORPORATION ,  JAPAN METALS AND CHEMICALS CO., LTD.

Inventor： Shohei Unoki ,  Takeshi Kajiwara ,  Takahiro Endo ,  Shigekazu Yasuoka ,  Yoshikatsu Watanabe

IPC: H01M4/90 ,  H01M12/08 ,  H01M4/38 ,  H01M4/02 ,  H01M4/86

Abstract: An air electrode catalyst for an air secondary battery includes a pyrochlore-type composite oxide having two or more crystal structures having a different amount of oxygen. A battery, according to some embodiments, includes an electrode group including an air electrode and a negative electrode stacked with a separator therebetween, and a container accommodating the electrode group along with an alkali electrolyte solution, wherein the air electrode includes the air electrode catalyst. The air electrode catalyst may have a pyrochlore-type composite oxide having a crystal structure represented by Bi2Ru2O6.92 and a crystal structure represented by Bi2Ru2O7.33.

公开(公告)号：US11355751B2

公开(公告)日：2022-06-07

申请号：US16665891

申请日：2019-10-28

Applicant: FDK CORPORATION

Inventor： Takeshi Kajiwara ,  Shohei Unoki ,  Takahiro Endo

IPC: H01M4/505 ,  H01M4/24 ,  H01M4/525 ,  H01M12/08 ,  H01M4/38 ,  H01M4/86 ,  H01M4/90 ,  H01M4/02

Abstract: A battery includes an electrode group including an air electrode and a negative electrode stacked with a separator therebetween, and a battery case accommodating the electrode group along with an alkali electrolyte solution, wherein the air electrode includes an air electrode mixture containing a pyrochlore-type composite oxide and a manganese oxide, and the pyrochlore-type composite oxide is a bismuth-ruthenium oxide.

公开(公告)号：US20230343927A1

公开(公告)日：2023-10-26

申请号：US17759721

申请日：2021-02-04

Applicant: FDK CORPORATION

Inventor： Syouhei Unoki ,  Takahiro Endo ,  Shigekazu Yasuoka

IPC: H01M4/32 ,  H01M10/28 ,  H01M4/36 ,  H01M4/24

CPC classification number: H01M4/32 ,  H01M10/28 ,  H01M4/364 ,  H01M4/242 ,  H01M2004/028

Abstract: A battery 2 includes: a container 10; and an electrode group 6 housed in the container 10 together with an alkaline electrolyte liquid 4. The electrode group 6 includes a nickel electrode 14 as a positive electrode and a negative electrode 12 that are combined with a separator 8 interposed therebetween. The nickel electrode 14 includes a positive electrode core and a positive electrode mixture permeated in the positive electrode core. The positive electrode mixture contains nickel hydroxide that is a positive electrode active material. The nickel hydroxide contains a sulfate salt, and a weight rate of a S component contained in the sulfate salt to a Ni component in the nickel hydroxide is 0.28% or more and 1.50% or less.

公开(公告)号：US11322751B2

公开(公告)日：2022-05-03

申请号：US16981275

申请日：2019-03-25

Applicant: FDK CORPORATION

Inventor： Shohei Unoki ,  Takeshi Kajiwara ,  Takahiro Endo ,  Shigekazu Yasuoka ,  Yoshikatsu Watanabe

IPC: H01M4/90 ,  H01M4/38 ,  H01M4/88 ,  H01M12/08 ,  B01J23/644 ,  B01J37/06 ,  H01M4/02 ,  H01M4/86

Abstract: A battery includes an electrode group including an air electrode and a negative electrode stacked with a separator therebetween, and an accommodating bag accommodating the electrode group along with an alkali electrolyte solution. The air electrode includes a catalyst for an air secondary battery. This catalyst for an air secondary battery is produced by a method for producing a catalyst for an air secondary battery, the method including a precursor preparation step of preparing a bismuth-ruthenium oxide precursor, a calcination step of calcining the bismuth-ruthenium oxide precursor obtained in this precursor preparation step to form a bismuth-ruthenium oxide, and a nitric acid treatment step of immersing the bismuth-ruthenium oxide obtained by this calcination step in a nitric acid aqueous solution.

公开(公告)号：US20210043945A1

公开(公告)日：2021-02-11

申请号：US16981275

申请日：2019-03-25

Applicant: FDK CORPORATION

Inventor： Shohei Unoki ,  Takeshi Kajiwara ,  Takahiro Endo ,  Shigekazu Yasuoka ,  Yoshikatsu Watanabe

IPC: H01M4/90 ,  H01M12/08 ,  H01M4/38 ,  H01M4/88

Abstract: A battery includes an electrode group including an air electrode and a negative electrode stacked with a separator therebetween, and an accommodating bag accommodating the electrode group along with an alkali electrolyte solution. The air electrode includes a catalyst for an air secondary battery. This catalyst for an air secondary battery is produced by a method for producing a catalyst for an air secondary battery, the method including a precursor preparation step of preparing a bismuth-ruthenium oxide precursor, a calcination step of calcining the bismuth-ruthenium oxide precursor obtained in this precursor preparation step to form a bismuth-ruthenium oxide, and a nitric acid treatment step of immersing the bismuth-ruthenium oxide obtained by this calcination step in a nitric acid aqueous solution.