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公开(公告)号：US20200295350A1
公开(公告)日：2020-09-17
申请号：US16891377
申请日：2020-06-03
Inventor： Shinji Mino , Takanori Maruo , Motoki Kinugawa
Abstract: A lithium secondary battery positive electrode with: a metallic foil; and a positive electrode mixture layer formed on a surface of the metallic foil and containing a binding agent, a conductive agent, and a positive electrode active material comprising a lithium-transition metal complex oxide, wherein the positive electrode has a diameter of the liquid-removed space of at most 6.5 mm as measured by a wettability evaluation test, wherein a positive electrode is placed inside a container, and a prescribed test solution is added to a prescribed liquid-surface level, and nitrogen is sprayed thereon from a prescribed pipe at a prescribed pressure. A measurement is taken of the diameter of a region from which the solution has been removed by the spraying, and a mean value of such diameters measured between 0.5 seconds and 1.5 seconds after the initiation of the spraying is used as the diameter of the liquid-removed space.
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公开(公告)号：US12218383B2
公开(公告)日：2025-02-04
申请号：US17041693
申请日：2019-02-28
Inventor： Takanori Maruo , Shinji Mino , Motoki Kinugawa
IPC: H01M50/538 , H01M4/13 , H01M4/62 , H01M10/0525 , H01M10/0587 , H01M50/534 , H01M50/536
Abstract: This electrode plate for a non-aqueous electrolyte secondary battery has a band-like core and a first active substance layer formed on at least a first surface of the core. A current-collecting lead is connected to an exposed section at which a portion of the first surface of the core is exposed in the longitudinal direction. The electrode plate for a non-aqueous electrolyte secondary battery has a second active substance layer which is more electroconductive than the first active substance layer and which is disposed on a portion of the first surface such that it adjoins with the exposed section.
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公开(公告)号：US20210013482A1
公开(公告)日：2021-01-14
申请号：US17041693
申请日：2019-02-28
Inventor： Takanori Maruo , Shinji Mino , Motoki Kinugawa
IPC: H01M2/26 , H01M4/13 , H01M10/0587
Abstract: This electrode plate for a non-aqueous electrolyte secondary battery has a band-like core and a first active substance layer formed on at least a first surface of the core. A current-collecting lead is connected to an exposed section at which a portion of the first surface of the core is exposed in the longitudinal direction. The electrode plate for a non-aqueous electrolyte secondary battery has a second active substance layer which is more electroconductive than the first active substance layer and which is disposed on a portion of the first surface such that it adjoins with the exposed section.
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公开(公告)号：US20230405630A1
公开(公告)日：2023-12-21
申请号：US18036046
申请日：2021-08-05
Inventor： Yudai Akimoto , Motoki Kinugawa , Takanori Maruo
CPC classification number: B05C5/0254 , H01M4/0404 , H01M4/525
Abstract: An electrode mixture slurry coating device includes: a transport roller that transports a band-shaped base material; and a die head provided at a position opposed to the transport roller, and that discharges and applies an electrode mixture slurry to the base material being transported. The die head includes a fluid reservoir in which the electrode mixture slurry accumulates, a discharge port for discharging the electrode mixture slurry, and a fluid path that provides communication between the fluid reservoir and the discharge port. At least a portion, being adjacent to the fluid path, of the die head is formed of a first material having a coefficient of linear expansion of 4.0 ppm/K or less, and y
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