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公开(公告)号：US20240332636A1
公开(公告)日：2024-10-03
申请号：US18604474
申请日：2024-03-13
Applicant: FDK CORPORATION
Inventor： Satoshi Murase , Soma Suzuki , Tomomichi Yamaguchi , Taketoshi Banno , Takeshi Ito
IPC: H01M10/28 , H01M4/24 , H01M4/42 , H01M4/66 , H01M50/44 , H01M50/454 , H01M50/457 , H01M50/489 , H01M4/02
CPC classification number: H01M10/286 , H01M4/244 , H01M4/42 , H01M4/661 , H01M50/44 , H01M50/454 , H01M50/457 , H01M50/489 , H01M2004/027
Abstract: A battery includes an outer can and an electrode group housed in the outer can together with an alkaline electrolyte solution. The electrode group includes a positive electrode and a negative electrode stacked together with a separator therebetween. The negative electrode includes a negative electrode core and a negative electrode mixture retained on the negative electrode core. The negative electrode mixture contains at least one of zinc, a zinc alloy, or a zinc-containing compound. The negative electrode core is composed of a nonporous copper foil. The separator is a composite including a nonwoven fabric and a microporous film stacked together in the thickness direction. A value of A/B is 0.28 or more and 0.53 or less, where A is the total thickness of the microporous film, and B is the total thickness of the nonwoven fabric.
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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
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.
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公开(公告)号：US20200161646A1
公开(公告)日：2020-05-21
申请号：US16773367
申请日：2020-01-27
Applicant: FDK CORPORATION , FUJITSU LIMITED
Inventor： Takeshi Ito , Yuzo Imoto , Masaru Kihara , Takayuki Yano , Shigekazu Yasuoka , Shuuichi Doi , Takashi Yamazaki , Yuji Kataoka
Abstract: A nickel-hydrogen secondary battery includes an electrode group comprising a separator, a positive electrode, and a negative electrode, and the positive electrode contains a positive electrode active material including a base particle comprising a nickel hydroxide particle containing Mn in solid solution and a conductive layer comprising a Co compound and covering the surface of the base particle, wherein the X-ray absorption edge energy of Mn detected within 6500 to 6600 eV by measurement with an XAFS method is 6548 eV or higher.
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Patent Agency Ranking
公开(公告)号：US20170237065A1
公开(公告)日：2017-08-17
申请号：US15425816
申请日：2017-02-06
Applicant: FDK CORPORATION , FUJITSU LIMITED
Inventor： Takeshi Ito , Yuzo Imoto , Masaru Kihara , Takayuki Yano , Shigekazu Yasuoka , Shuuichi Doi , Takashi Yamazaki , Yuji Kataoka
CPC classification number: H01M4/366 , C01G51/04 , C01G53/04 , C01P2002/50 , C01P2002/52 , C01P2004/80 , H01M4/32 , H01M4/50 , H01M4/52 , H01M10/30 , H01M10/345 , H01M2004/028 , H01M2300/0014
Abstract: A nickel-hydrogen secondary battery includes an electrode group comprising a separator, a positive electrode, and a negative electrode, and the positive electrode contains a positive electrode active material including a base particle comprising a nickel hydroxide particle containing Mn in solid solution and a conductive layer comprising a Co compound and covering the surface of the base particle, wherein the X-ray absorption edge energy of Mn detected within 6500 to 6600 eV by measurement with an XAFS method is 6548 eV or higher.
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公开(公告)号：US20170141401A1
公开(公告)日：2017-05-18
申请号：US15349933
申请日：2016-11-11
Applicant: FDK CORPORATION , FUJITSU LIMITED
Inventor： Yuzo Imoto , Takeshi Ito , Shigekazu Yasuoka , Shuuichi Doi , Takashi Yamazaki , Yuji Kataoka
CPC classification number: H01M4/626 , H01M4/32 , H01M4/364 , H01M4/366 , H01M4/52 , H01M10/30 , H01M10/345 , H01M2004/028
Abstract: A nickel-hydrogen secondary battery includes an electrode group including a separator, a positive electrode and a negative electrode, the positive electrode includes a positive electrode active material, the positive electrode active material includes a composite particle including a compound of Co and a compound of Ni, and the ratio R represented by A/B satisfies a relationship of R≧0.3, when the amount of jumping in the X-ray absorption fine structure spectrum of the Co in 7600 to 7800 eV and the amount of jumping in the X-ray absorption fine structure spectrum of the Ni in 8300 to 8500 eV obtained by measurement according to a conversion electron yield method are defined as A and B, respectively.
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公开(公告)号：US11228027B2
公开(公告)日：2022-01-18
申请号：US16773367
申请日：2020-01-27
Applicant: FDK CORPORATION , FUJITSU LIMITED
Inventor： Takeshi Ito , Yuzo Imoto , Masaru Kihara , Takayuki Yano , Shigekazu Yasuoka , Shuuichi Doi , Takashi Yamazaki , Yuji Kataoka
IPC: H01M4/36 , H01M4/52 , H01M4/32 , C01G53/04 , C01G51/04 , H01M4/50 , H01M10/34 , H01M10/30 , H01M4/02
Abstract: A nickel-hydrogen secondary battery includes an electrode group comprising a separator, a positive electrode, and a negative electrode, and the positive electrode contains a positive electrode active material including a base particle comprising a nickel hydroxide particle containing Mn in solid solution and a conductive layer comprising a Co compound and covering the surface of the base particle, wherein the X-ray absorption edge energy of Mn detected within 6500 to 6600 eV by measurement with an XAFS method is 6548 eV or higher.
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公开(公告)号：US10177385B2
公开(公告)日：2019-01-08
申请号：US15349933
申请日：2016-11-11
Applicant: FDK CORPORATION , FUJITSU LIMITED
Inventor： Yuzo Imoto , Takeshi Ito , Shigekazu Yasuoka , Shuuichi Doi , Takashi Yamazaki , Yuji Kataoka
Abstract: A nickel-hydrogen secondary battery includes an electrode group including a separator, a positive electrode and a negative electrode, the positive electrode includes a positive electrode active material, the positive electrode active material includes a composite particle including a compound of Co and a compound of Ni, and the ratio R represented by A/B satisfies a relationship of R≥0.3, when the amount of jumping in the X-ray absorption fine structure spectrum of the Co in 7600 to 7800 eV and the amount of jumping in the X-ray absorption fine structure spectrum of the Ni in 8300 to 8500 eV obtained by measurement according to a conversion electron yield method are defined as A and B, respectively.
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公开(公告)号：US20170237066A1
公开(公告)日：2017-08-17
申请号：US15433931
申请日：2017-02-15
Applicant: FDK CORPORATION , FUJITSU LIMITED
Inventor： Yuzo Imoto , Takeshi Ito , Shuuichi Doi , Takashi Yamazaki , Yuji Kataoka
Abstract: A nickel-hydrogen secondary battery includes an electrode group including a separator, a positive electrode, and a negative electrode, and the positive electrode includes a positive electrode active material particle including a base particle and a surface layer covering the surface of the base particle, and the base particle contains nickel hydroxide, and the surface layer contains a trivalent or higher-valent cobalt compound and Co3O4.
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