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公开(公告)号：US10930951B2
公开(公告)日：2021-02-23
申请号：US16112303
申请日：2018-08-24
Inventor： Shuji Ito , Masahisa Fujimoto
IPC: H01M8/04276 , H01M4/58 , H01M8/18 , H01M4/587 , H01M4/62
Abstract: A flow battery includes: a cell including a first chamber and a second chamber a first liquid that contains a charge mediator and a discharge mediator, and that is located in the first chamber of the cell; a first electrode located in the first chamber of the cell; a first active material that is solid and that is located in the first chamber of the cell; a second liquid located in the second chamber of the cell; a second electrode that is located in the second chamber of the cell, and that is a counter electrode to the first electrode; and a first stirrer that stirs the first liquid in the first chamber. The charge mediator has a lower equilibrium potential than an equilibrium potential of the first active material. The discharge mediator has a higher equilibrium potential than the equilibrium potential of the first active material.
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公开(公告)号：US10741865B2
公开(公告)日：2020-08-11
申请号：US15636642
申请日：2017-06-29
Inventor： Masahisa Fujimoto , Shuji Ito
IPC: H01M8/18 , H01M8/04186 , H01M8/04082
Abstract: A flow battery includes a first liquid, a second liquid, a first electrode immersed in the first liquid, a second electrode being a counter electrode of the first electrode and immersed in the second liquid, and an isolation unit separating the first electrode and the first liquid from the second electrode and the second liquid. Lithium is dissolved in at least one of the first liquid and the second liquid. The first liquid and the second liquid have a property of emitting solvated electrons of lithium and dissolving the lithium as a cation.
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Patent Agency Ranking
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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公开(公告)号：US11374249B2
公开(公告)日：2022-06-28
申请号：US16167532
申请日：2018-10-23
Inventor： Masahisa Fujimoto , Shuji Ito
IPC: H01M8/18 , H01M8/22 , H01M8/04186 , H01M4/38 , H01M8/023 , H01M8/04276 , H01M8/20
Abstract: A flow battery according to one aspect of the present disclosure includes: a first liquid containing dissolved therein a charge mediator and a discharge mediator; a first electrode immersed in the first liquid; and a first active material immersed in the first liquid. The equilibrium potential of the charge mediator is lower than the equilibrium potential of the first active material, and the equilibrium potential of the discharge mediator is higher than the equilibrium potential of the first active material.
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公开(公告)号：US11239482B2
公开(公告)日：2022-02-01
申请号：US16542296
申请日：2019-08-15
Inventor： Shuji Ito , Masahisa Fujimoto , Haruko Kubota , Norihiko Kawabata
IPC: H01M8/18 , H01M8/04186
Abstract: The flow battery in an aspect of the present disclosure includes a first liquid containing a lithium ion and a first redox material, a first electrode in contact with the first liquid, a second electrode functioning as a counter electrode of the first electrode, an isolation unit that isolates the first electrode and the second electrode from each other, a first chamber, and a first circulation mechanism for circulating the first liquid between the first electrode and the first chamber, and in the flow battery, the first liquid is non-aqueous and the first circulation mechanism includes a magnetically driven pump.
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公开(公告)号：US12148883B2
公开(公告)日：2024-11-19
申请号：US16935205
申请日：2020-07-22
Inventor： Masahisa Fujimoto , Shuji Ito
IPC: H01M10/05 , H01M4/40 , H01M10/0525 , H01M10/0567 , H01M4/02
Abstract: The lithium secondary battery of the present invention satisfies at least one requirement selected from the group consisting of requirements (i) and (ii). (i) An electrolyte liquid includes an anode mediator which is dissolved along with lithium in a solvent of the electrolyte liquid to give, to the electrolyte liquid, an equilibrium potential which is not more than an upper limit potential at which a compound of lithium and an anode active material is formed, and does not include a compound which is dissolved along with lithium in the solvent of the electrolyte liquid to give, to the electrolyte liquid, an equilibrium potential which is more than the upper limit potential. (ii) The electrolyte liquid only includes, as the anode mediator, only a compound which is dissolved along with lithium in the solvent of the electrolyte liquid to give, to the electrolyte liquid, the equilibrium potential which is not more than the upper limit potential at which the compound of lithium and the anode active material is formed.
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公开(公告)号：US11322769B2
公开(公告)日：2022-05-03
申请号：US16931325
申请日：2020-07-16
Inventor： Shuji Ito , Masahisa Fujimoto , Honami Sako , Sho Shibata
Abstract: In a flow battery according to one aspect of the present disclosure, a first liquid does not include an undesired compound. The flow battery satisfies requirement (i), (ii), (iii) or (iv). (i) An anode active material 14 includes graphite, and the first liquid has an equilibrium potential of not more than 0.15 V vs. Li/Li+. (ii) An anode active material includes aluminum, and the first liquid has an equilibrium potential of not more than 0.18 V vs. Li/Li+. (iii) An anode active material includes tin, and the first liquid has an equilibrium potential of not more than 0.25 V vs. Li/Li+. (iv) An anode active material includes silicon, and the first liquid has an equilibrium potential of not more than 0.25 V vs. Li/Li+.
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