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公开(公告)号：EP4435884A1
公开(公告)日：2024-09-25
申请号：EP23204214.3
申请日：2023-10-17
发明人： HOSHINA, Keigo , MURATA, Yoshiaki
摘要： In general, according to one approach, a battery (1) including a positive electrode (5), a negative electrode (3), and a water-containing electrolyte is provided. A nitrogen-containing compound is present on at least a part of a surface of a negative electrode active material-containing layer (3b). A pore volume of a positive electrode active material-containing layer (5b) according to a mercury intrusion method is represented by Vc (mL/g). A pore volume of the negative electrode active material-containing layer (3b) according to a mercury intrusion method is represented by Va (mL/g). The pore volume Va is 0.14 mL/g or less. The battery (1) satisfies following expression (1): Vc>Va
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公开(公告)号：EP4435892A1
公开(公告)日：2024-09-25
申请号：EP23204215.0
申请日：2023-10-17
发明人： HOSHINA, Keigo , MURATA, Yoshiaki
IPC分类号： H01M4/485 , H01M4/131 , H01M4/62 , H01M10/0525 , H01M50/209 , H01M10/627
CPC分类号： H01M4/485 , H01M4/131 , H01M4/622 , H01M10/0525 , H01M2220/2020130101 , H01M50/209 , H01M10/627
摘要： In general, according to one approach, a battery (1) including a positive electrode (5), a negative electrode (3), and a water-containing electrolyte is provided. The negative electrode (3) includes a negative electrode active material-containing layer (3b) that includes a Ticontaining oxide and a binder capable of containing water. Also, the battery (1) satisfies the following expression (1) : 0.2≤Wbind/WH2O≤15 where Wbind denotes a content (% by weight) of the binder capable of containing water in the negative electrode active material-containing layer (3b), and WH2O denotes a content (% by weight) of the water in the electrolyte.
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公开(公告)号：EP4435876A1
公开(公告)日：2024-09-25
申请号：EP23194668.2
申请日：2023-08-31
发明人： MURATA, Yoshiaki , HOSHINA, Keigo , TAKAMI, Norio
IPC分类号： H01M4/04 , H01M4/62 , H01M10/0525 , H01M4/131 , H01M4/1391
CPC分类号： H01M4/0404 , H01M4/131 , H01M4/1391 , H01M4/622 , H01M4/623 , H01M10/0525
摘要： In general, according to an approach, a secondary battery (100) is provided. The secondary battery (100) includes an aqueous electrolyte, a positive electrode (5), and a negative electrode (3). At least one of the positive electrode (5) or the negative electrode (3) includes a first binder. The first binder includes a fluorine-based resin and an acrylic resin.
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公开(公告)号：EP4432398A1
公开(公告)日：2024-09-18
申请号：EP23204012.1
申请日：2023-10-17
IPC分类号： H01M4/50 , H01M4/62 , H01M10/0525 , C01G33/00
CPC分类号： H01M2004/02720130101 , H01M4/622 , H01M4/502 , H01M10/0525 , H01M2220/2020130101 , C01G33/00
摘要： According to one approach, provided is an electrode slurry including carboxymethyl cellulose and niobium oxide particles. A degree of etherification of the carboxymethyl cellulose is 0.6 or more and 1.0 or less. A contact angle with water according to a permeation rate method of the niobium oxide particles is 83° or more.
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公开(公告)号：EP4432397A1
公开(公告)日：2024-09-18
申请号：EP23194174.1
申请日：2023-08-30
发明人： HARADA, Yasuhiro , ISE, Kazuki , YAMASHITA, Yasunobu , UEDA, Kakuya , MURATA, Yoshiaki , TAKAMI, Norio
IPC分类号： H01M4/485 , H01M4/131 , H01M4/1391 , H01M10/0525 , H01M4/04 , H01M4/505 , C01G33/00 , H01M4/02
CPC分类号： H01M10/0525 , H01M4/1391 , H01M4/131 , H01M4/0404 , H01M4/505 , C01G33/00 , C01G33/006 , H01M4/485 , H01M2004/02720130101
摘要： According to one approach, an active material including a niobium-titanium oxide phase having a monoclinic structure is provided. The niobium-titanium oxide phase has a crystal structure that includes in a crystal lattice thereof, at least one per unit lattice of a (Nb, Ti)O6 octahedron site composed only with vertex-sharing, a bond angle distortion in the octahedron site being 0.8 σ2/deg2 or less. A crystallite diameter of the niobium-titanium oxide phase is in a range from 85 nm or greater to 130 nm or less.
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