Mitsubishi Chemical Corporation

Ayako Shimonaka

Akihiro Ishii

Mitsufumi Nodono

Fumino Momose

Hikaru Momose

Haruki Okada

Daisuke Fujikawa

Akikazu Matsumoto

Fumiko Fujie

Masakazu Itou

A binder resin composition for secondary battery electrodes is described as containing a polymer (A) that has a structural unit represented by general formula (1) and a water-insoluble particulate polymer (B-1) and/or a water-soluble polymer (B-2) where (A), (B-1) and (B-2) are defined as described. A slurry for secondary battery electrodes contains the binder resin composition, an active material and a solvent. An electrode for secondary batteries is provided with a collector and an electrode layer that is arranged on the collector, where the electrode layer contains an active material and the binder resin composition. Alternatively, the electrode layer is obtained by applying the slurry for secondary battery electrodes to the collector, and drying the slurry thereon. 

Binder resin composition for secondary battery electrodes, slurry for secondary battery electrodes, electrode for secondary batteries, and lithium ion secondary battery

A binder resin for a nonaqueous secondary battery electrode of the invention satisfies I&#x2265;30 (Iindicates a sum of scattering intensities observed in a particle size range of from 1 to 100 nm) when a solution is formed by dissolving the binder resin in water at a concentration of 5% by mass and particle size distribution is measured by a dynamic light scattering method at 25&#xb0; C. The binder resin contains a polymer (B) having a structural unit represented by the following Formula (11) and a specific structural unit. The binder resin also contains a polymer (&#x3b1;) having a specific structural unit and a structural unit represented by the following Formula (22), and/or a mixture of a polymer (&#x3b2;1) having a specific structural unit and a polymer (&#x3b2;2) having a structural unit represented by the following Formula (22). 

Binder resin for nonaqueous secondary battery electrode, binder resin composition for nonaqueous secondary battery electrode slurry composition for nonaqueous secondary battery electrode, electrode for nonaqueous secondary battery, and nonaqueous secondary battery

A binder resin for a nonaqueous secondary battery electrode of the invention satisfies I&#x2267;30 (Iindicates a sum of scattering intensities observed in a particle size range of from 1 to 100 nm) when a solution is formed by dissolving the binder resin in water at a concentration of 5% by mass and particle size distribution is measured by a dynamic light scattering method at 25&#xb0; C. The binder resin contains a polymer (B) having a structural unit represented by the following Formula (11) and a specific structural unit. The binder resin also contains a polymer (&#x3b1;) having a specific structural unit and a structural unit represented by the following Formula (22), and/or a mixture of a polymer (&#x3b2;1) having a specific structural unit and a polymer (&#x3b2;2) having a structural unit represented by the following Formula (22). 

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Otake, Japan

Ayako Shimonaka