公开(公告)号：EP4287293A1

公开(公告)日：2023-12-06

申请号：EP22745613.4

申请日：2022-01-14

申请人： ENEOS Materials Corporation

发明人： ITAI, Shingo ,  ASO, Keigo ,  IIDA, Masashi ,  ABE, Tatsuya

IPC分类号： H01M4/13 ,  H01M4/139 ,  H01M4/62 ,  H01M10/052 ,  H01M10/0562 ,  H01M10/058

摘要： Provided are a binder for an all-solid-state secondary battery, which is excellent in adhesiveness and flexibility, has a satisfactory cycle life characteristic, and can achieve a high yield, and a binder composition for an all-solid-state secondary battery containing the binder. The binder for an all-solid-state secondary battery according to the present invention includes a conjugated diene-based copolymer (A) that: has an aromatic vinyl unit based on an aromatic vinyl compound and a conjugated diene unit based on a conjugated diene compound; and has a storage elastic modulus (G') of 4.0×10 4 Pa or more and 2.0×10 5 Pa or less and a loss tangent (tan6) of 0.10 or more and 0.80 or less, which are measured using a dynamic viscoelasticity-measuring apparatus under conditions of a measurement temperature of 25°C, a frequency of 0.1 Hz, and a strain amount of 1%.

公开(公告)号：EP4287292A1

公开(公告)日：2023-12-06

申请号：EP22745611.8

申请日：2022-01-14

申请人： ENEOS Materials Corporation

发明人： ITAI, Shingo ,  ASO, Keigo ,  IIDA, Masashi ,  ABE, Tatsuya

IPC分类号： H01M4/13 ,  H01M4/139 ,  H01M4/62 ,  H01M10/052 ,  H01M10/0562 ,  H01M10/058

摘要： Provided is a binder for an all-solid-state secondary battery, which can suppress binder migration in a production process for an electrode of an all-solid-state secondary battery, leading to satisfactory binding properties and flexibility of the resultant electrode, and to excellent lithium ion conductivity, and by extension, can achieve a satisfactory cycle life characteristic. The binder for an all-solid-state secondary battery according to the present invention includes a conjugated diene-based polymer (A) that: has a conjugated diene unit based on a conjugated diene compound; and has a solubility parameter (SP value) of 16.80 MPa 1/2 or more and 17.80 MPa 1/2 or less.

公开(公告)号：EP4123748A1

公开(公告)日：2023-01-25

申请号：EP21770713.2

申请日：2021-03-10

申请人： ENEOS Materials Corporation

发明人： ABE, Tatsuya ,  ASO, Keigo ,  ITAI, Shingo ,  IIDA, Masashi

IPC分类号： H01M4/13 ,  H01M4/139 ,  H01M4/62 ,  H01M10/052 ,  H01M10/0562 ,  H01M10/058

摘要： Provided are a binder for an all-solid-state secondary battery, which is excellent in lithium ion conductivity and capable of achieving a satisfactory cycle life characteristic even under a high voltage, and a binder composition for an all-solid-state secondary battery containing the binder. The binder for an all-solid-state secondary battery includes a polymer (A) that: has an aromatic vinyl unit based on an aromatic vinyl compound and a conjugated diene unit based on a conjugated diene compound; has a Mooney viscosity (ML 1+4 , 100°C) of from 10 to 100; and has a value α, which is represented by the following equation (i), of less than 0.7, where "p", "q", "r", and "s" represent constituent ratios (molar ratios) of a structural unit represented by the following formula (1), a structural unit represented by the following formula (2), a structural unit represented by the following formula (3), and a structural unit represented by the following formula (4) in the polymer, respectively. α = p + 0.5 × r / p + q + 0.5 × r + s

公开(公告)号：EP4122962A1

公开(公告)日：2023-01-25

申请号：EP21771558.0

申请日：2021-03-10

申请人： ENEOS Materials Corporation

发明人： ABE, Tatsuya ,  ASO, Keigo ,  ITAI, Shingo ,  IIDA, Masashi

IPC分类号： C08F8/00 ,  C08F236/06 ,  H01M4/139 ,  H01M4/62 ,  H01M10/0562 ,  H01M10/058

摘要： Provided is a binder composition for an all-solid-state secondary battery, which is excellent in long-term storage stability and also excellent in lithium ion conductivity, and is capable of achieving a satisfactory cycle life characteristic even under a high voltage. The binder composition for an all-solid-state secondary battery includes: a polymer (A) having an aromatic vinyl unit based on an aromatic vinyl compound and a conjugated diene unit based on a conjugated diene compound; an anti-aging agent (B) at 200 ppm or more and 5,000 ppm or less with respect to a total mass of the binder composition for an all-solid-state secondary battery; and a liquid medium (C).