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公开(公告)号：US09923246B2
公开(公告)日：2018-03-20
申请号：US15157471
申请日：2016-05-18
Inventor： Hirotetsu Suzuki , Nobuhiko Hojo
IPC: H01M10/0569 , H01M10/0525 , H01M10/0568 , H01M10/0567
CPC classification number: H01M10/0569 , H01M10/0525 , H01M10/0567 , H01M10/0568 , H01M2300/0034 , H01M2300/0037
Abstract: Provided is an electrolytic solution including a nonaqueous solvent and an alkali metal salt. The alkali metal salt is dissolved in the nonaqueous solvent. The nonaqueous solvent contains a perfluoropolyether and a fluorinated phosphate. Also provided is a battery including the electrolytic solution, a positive electrode containing a positive electrode active material that can occlude and release an alkali metal cation, and a negative electrode containing a negative electrode active material that can occlude and release the alkali metal cation.
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公开(公告)号：US09905843B2
公开(公告)日：2018-02-27
申请号：US15285065
申请日：2016-10-04
Inventor： Akira Kano , Yukihiro Umetani , Shuji Ito , Nobuhiko Hojo
IPC: H01M4/133 , H01M4/587 , H01M4/62 , H01M10/0525 , H01M10/052
CPC classification number: H01M4/133 , H01M4/587 , H01M4/62 , H01M10/052 , H01M10/0525
Abstract: A negative electrode material includes a carbon material including boron. In a B1s spectrum of the carbon material which is measured by X-ray photoelectron spectroscopy, the ratio of the area of a peak that occurs at a binding energy of 187.0 eV or more and 188.5 eV or less to the total area of peaks that occur at a binding energy of 184.0 eV or more and 196.5 eV or less is 50% or more.
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23.发明授权公开(公告)号：US09786949B2
公开(公告)日：2017-10-10
申请号：US14651158
申请日：2013-11-21
Inventor： Nobuhiko Hojo , Ryuichi Natsui , Akira Kano , Masahisa Fujimoto
CPC classification number: H01M10/054 , C01G45/1228 , C01G49/0027 , C01G49/0072 , C01G53/42 , C01P2002/72 , C01P2002/76 , C01P2006/40 , H01M4/131 , H01M4/505 , H01M4/525 , H01M2004/028 , Y02P20/133
Abstract: An object of the present invention or a problem to be solved by the present invention is to provide, as a material for use as a positive electrode of a sodium secondary battery, a novel material that allows the resulting battery to have capacity characteristics superior to those of conventional batteries. The composite metal oxide of the present invention has a composition represented by the general formula NaxMeyO2, where Me is at least one selected from the group consisting of Fe, Mn, and Ni, x satisfies 0.8
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公开(公告)号：US09640840B2
公开(公告)日：2017-05-02
申请号：US14553089
申请日：2014-11-25
Inventor： Takayuki Nakatsutsumi , Nobuhiko Hojo , Hirotetsu Suzuki , Yu Otsuka
IPC: H01M10/05 , H01M10/0569 , H01M4/48 , H01M4/587 , H01M10/054 , H01M10/0568
CPC classification number: H01M10/0569 , H01M4/483 , H01M4/587 , H01M10/054 , H01M10/0568 , H01M2300/0034 , H01M2300/0037
Abstract: A sodium secondary battery includes a positive electrode, a negative electrode, and a non-aqueous electrolytic solution including a non-aqueous solvent. The non-aqueous solvent includes a fluoro group-containing chain carboxylic acid ester represented by General Formula (1): wherein R1 is an aromatic group, an unsaturated aliphatic group or a saturated aliphatic group; R2, R3 and R4 are each a hydrogen atom, an aromatic group, an unsaturated aliphatic group or a saturated aliphatic group; and at least one of R1, R2, R3 and R4 includes one or more fluoro groups.
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公开(公告)号：US11817561B2
公开(公告)日：2023-11-14
申请号：US17054890
申请日：2019-02-19
Inventor： Kenji Matsubara , Nobuhiko Hojo , Hiroyuki Matsumoto , Atsushi Fukui
IPC: H01M10/36
CPC classification number: H01M10/36 , H01M2300/0002
Abstract: An electrolyte solution according to one aspect of the present disclosure comprises water, a lithium salt, and a polycarboxylic acid having two or more carboxylic acid groups. A secondary battery according to one aspect of the present disclosure comprises a positive electrode, a negative electrode, and the electrolyte solution.
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Patent Agency Ranking
公开(公告)号：US20230109890A1
公开(公告)日：2023-04-13
申请号：US17912970
申请日：2021-01-26
Inventor： Kyohei Sakamoto , Nobuhiko Hojo , Masaki Hasegawa
Abstract: This negative electrode for secondary batteries is provided with a negative electrode mixture that contains a negative electrode active material, an additive and a conductive agent. The negative electrode active material contains an Si-containing material; the additive contains an alkali metal sulfate salt; and the conductive agent contains carbon nanotubes. The content of the alkali metal sulfate salt in the negative electrode mixture is from 0.0025% by mass to 0.1% by mass relative to the total mass of the negative electrode active material.
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公开(公告)号：US11588143B2
公开(公告)日：2023-02-21
申请号：US17039801
申请日：2020-09-30
Inventor： Hirotetsu Suzuki , Ryuichi Natsui , Nobuhiko Hojo
IPC: H01M4/1315 , H01M4/505 , H01M10/052 , H01M10/0568 , H01M10/0567 , H01M4/525 , H01M4/485 , C01G45/00 , H01M10/0525 , C01G51/00 , C01G53/00 , H01M10/0566 , H01M4/58 , H01M10/0569 , H01M4/02
Abstract: Provided is a battery including: a positive electrode containing a positive electrode active material; a negative electrode; and an electrolyte solution containing a nonaqueous solvent. The positive electrode active material contains a compound represented by composition formula (1) below and having a crystal structure belonging to space group FM3-M: LixMeyOαFβ. (1) Here, Me is one or two or more elements selected from the group consisting of Mn, Co, Ni, Fe, Al, B, Ce, Si, Zr, Nb, Pr, Ti, W, Ge, Mo, Sn, Bi, Cu, Mg, Ca, Ba, Sr, Y, Zn, Ga, Er, La, Sm, Yb, V, and C. x, y, α, and β satisfy the following conditions: 1.7≤x≤2.2, 0.8≤y≤1.3, 1≤α≤2.5, and 0.5≤β≤2, respectively. The nonaqueous solvent includes at least one solvent selected from hydrofluoroethers, phosphazenes, phosphates, and perfluoropolyethers.
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公开(公告)号：US20220037657A1
公开(公告)日：2022-02-03
申请号：US17277433
申请日：2019-07-25
Inventor： Hiroyuki Matsumoto , Nobuhiko Hojo , Atsushi Fukui
IPC: H01M4/505 , H01M4/525 , H01M10/0568 , H01M10/0569
Abstract: A positive electrode active material that is a composite oxide that is represented by the general formula LiaNixCoyMnzMbO2, wherein 0.9
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公开(公告)号：US20210367273A1
公开(公告)日：2021-11-25
申请号：US17054890
申请日：2019-02-19
Inventor： Kenji Matsubara , Nobuhiko Hojo , Hiroyuki Matsumoto , Atsushi Fukui
IPC: H01M10/36
Abstract: An electrolyte solution according to one aspect of the present disclosure comprises water, a lithium salt, and a polycarboxylic acid having two or more carboxylic acid groups. A secondary battery according to one aspect of the present disclosure comprises a positive electrode, a negative electrode, and the electrolyte solution.
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公开(公告)号：US10833315B2
公开(公告)日：2020-11-10
申请号：US15813210
申请日：2017-11-15
Inventor： Takayuki Nakatsutsumi , Ryuichi Natsui , Nobuhiko Hojo
IPC: H01M4/1315 , H01M4/505 , H01M4/525 , H01M10/0568 , C01G51/00 , C01G45/00 , C01G53/00 , H01M10/0569 , H01M10/0525 , H01M4/485 , H01M4/02
Abstract: A battery includes a positive electrode including a positive electrode active material, a negative electrode, and an electrolytic solution including a nonaqueous solvent. The positive electrode active material includes a compound having a crystal structure belonging to a space group FM3-M and represented by Compositional Formula (1): LixMeyOαFβ, where, Me is one or more elements selected from the group consisting of Mn, Co, Ni, Fe, Al, B, Ce, Si, Zr, Nb, Pr, Ti, W, Ge, Mo, Sn, Bi, Cu, Mg, Ca, Ba, Sr, Y, Zn, Ga, Er, La, Sm, Yb, V, and Cr; and subscripts x, y, α, and β satisfy the following requirements: 1.7≤x≤2.2, 0.8≤y≤1.3, 1≤α≤2.5, and 0.5≤β≤2. The nonaqueous solvent includes a solvent having at least one fluoro group.
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