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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
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.
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公开(公告)号：US20240332677A1
公开(公告)日：2024-10-03
申请号：US18622822
申请日：2024-03-29
Applicant: FDK CORPORATION
Inventor： Yoshiyuki Ogihara , Takeshi Kajiwara , Shohei Unoki , Minori Nishi
IPC: H01M12/08 , H01M4/80 , H01M4/86 , H01M8/0202 , H01M8/0239
CPC classification number: H01M12/08 , H01M4/808 , H01M4/8626 , H01M8/0239 , H01M8/0269
Abstract: An air battery module includes a plurality of air battery cells connected in series. Each air battery cell includes a negative electrode current collector, a negative electrode plate, a separator, a positive electrode current collector supporting an air electrode, a water-repellent film, and a flow channel plate. The positive electrode current collector includes a conductive frame and two conductive connection parts formed integrally with the frame and extending in a direction away from the negative electrode current collector. The two connection parts are formed so as to face each other with the air electrode interposed therebetween. When the positive electrode side of a battery cell is connected to the negative electrode side of an adjacent battery cell, the connection part of the battery cell is contact with the negative electrode current collector of the adjacent battery cell and electrically connected thereto.
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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
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.
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公开(公告)号：US20180114981A1
公开(公告)日：2018-04-26
申请号：US15561843
申请日：2016-03-10
Applicant: FDK CORPORATION
Inventor： Jun Ishida , Masaru Kihara , Akira Saguchi , Yusuke Shingai , Takuya Kai , Takeshi Kajiwara
Abstract: A nickel-hydrogen secondary battery includes an electrode group that includes a separator, a positive electrode and a negative electrode, and the negative electrode contains a hydrogen storage alloy having a crystal structure in which an AB2 type unit and an AB5 type unit are laminated, in which a PCT characteristic diagram at 80° C. includes a first plateau region having a hydrogen pressure Pd1 when hydrogen is stored by 0.25 times an effective hydrogen storage amount that is a hydrogen storage amount when a hydrogen pressure is 1 MPa, and a second plateau region having a hydrogen pressure Pd2 when hydrogen is stored by 0.70 times the effective hydrogen storage amount, and Pd1 and Pd2 satisfy a relation of 0.6≤log10(Pd2/Pd1).
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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
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.
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Patent Agency Ranking
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
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.
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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
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.
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公开(公告)号：US20250167222A1
公开(公告)日：2025-05-22
申请号：US18934267
申请日：2024-11-01
Applicant: FDK CORPORATION
Inventor： Taketoshi Banno , Takeshi Kajiwara , Shohei Unoki , Satoshi Murase , Tomomichi Yamaguchi
Abstract: A nickel-zinc secondary battery includes a positive electrode, a negative electrode, and an alkaline electrolyte. The positive electrode includes a particle that includes a nickel composite hydroxide as a positive electrode active material, and the particle including the nickel composite hydroxide has a half-value width of a peak in a (101) plane appearing at 2θ=35 to 45° in an X-ray diffraction measurement of less than 0.8°.
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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
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.
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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
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.
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