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1.发明公开公开(公告)号：US20230317956A1
公开(公告)日：2023-10-05
申请号：US18191441
申请日：2023-03-28
发明人： Yuta TASHIRO
CPC分类号： H01M4/623 , H01M4/0404 , H01M4/583 , H01M50/46 , H01M2004/028
摘要： An electrode for a non-aqueous electrolyte rechargeable battery includes a current collector, an electrode mixed material layer, and a conductive base layer between the current collector and the electrode mixed material layer, wherein the base layer includes at least a styrene-acrylic acid ester-based copolymer, a carbon material, and polyacrylic acid, in the base layer, a content of the styrene-acrylic acid ester-based copolymer is greater than or equal to about 45 wt % and less than or equal to about 77.5 wt %, in the polyacrylic acid, a carboxy group is not neutralized or a ratio of a neutralized carboxy group neutralized by alkali metal ions among the carboxy groups is less than or equal to about 25%, and a loading amount of the electrode mixed material layer per one surface of the current collector is greater than or equal to about 15 mg/cm2 and less than or equal to about 70 mg/cm2.
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2.发明公开公开(公告)号：US20240322137A1
公开(公告)日：2024-09-26
申请号：US18614502
申请日：2024-03-22
发明人： Yuta TASHIRO , Hidekazu YAMAMOTO
IPC分类号： H01M4/36 , H01M4/02 , H01M4/583 , H01M4/60 , H01M10/0525
CPC分类号： H01M4/366 , H01M4/583 , H01M4/602 , H01M2004/027 , H01M10/0525
摘要： An electrode for a non-aqueous electrolyte rechargeable battery includes a current collector, an electrode mixture layer, and a conductive base layer between the current collector and the electrode mixture layer, wherein the base layer includes a styrene-butadiene copolymer, a carbon material, and poly(meth)acrylic acid, an amount of the styrene-butadiene copolymer in the base layer is greater than or equal to about 50 wt % and less than or equal to about 90 wt % based on 100 wt % of the base layer, in the poly(meth)acrylic acid, carboxyl groups included in the poly(meth)acrylic acid are not neutralized, or a proportion of neutralized carboxyl groups among the carboxyl groups is less than or equal to about 75%, and a weight per unit area of the electrode mixture layer at one surface of the current collector is greater than or equal to about 10 mg/cm2 and less than or equal to about 35 mg/cm2.
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3.发明公开公开(公告)号：US20240250265A1
公开(公告)日：2024-07-25
申请号：US18421336
申请日：2024-01-24
发明人： Yuta TASHIRO , Hidekazu YAMAMOTO
CPC分类号： H01M4/622 , H01M4/131 , H01M4/625 , H01M2004/021
摘要： An electrode for a non-aqueous electrolyte rechargeable battery and includes a current collector, an electrode mixture layer, and a base layer between the current collector and the electrode mixture layer. The base layer includes a styrene-acrylic acid ester-based copolymer, a carbon material, and/or a poly(meth)acrylic acid, and a content of the styrene-acrylic acid ester-based copolymer in the base layer may be greater than or equal to about 70 mass % and less than or equal to about 90 mass %. The poly(meth)acrylic acid has carboxyl groups that may not be neutralized, or a proportion of the carboxyl groups may be neutralized by alkali metal ions to be at most 25%. A weight per unit area of the electrode mixture layer per one surface of the current collector may be between about 10 mg/cm2 and about 35 mg/cm2.
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