#Sumitomo Chemical Company, Limited

NONAQUEOUS ELECTROLYTE SECONDARY BATTERY SEPARATOR, NONAQUEOUS ELECTROLYTE SECONDARY BATTERY MEMBER, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

As a nonaqueous electrolyte secondary battery separator which has excellent heat resistance and excellent battery performance, provided is a nonaqueous electrolyte secondary battery separator includin…

DRIVE·Sep 7·1 min read

H01M50/451 Sumitomo Chemical Company, Limited

NONAQUEOUS ELECTROLYTE SECONDARY BATTERY SEPARATOR, NONAQUEOUS ELECTROLYTE SECONDARY BATTERY MEMBER, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

A nonaqueous electrolyte secondary battery separator having excellent impact absorbency includes a polyolefin porous film having a full width W at half maximum of a peak of an MD component of not less…

DRIVE·Oct 13·2 min read

H01M50/494 Sumitomo Chemical Company, Limited

SEPARATOR AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

A nonaqueous electrolyte secondary battery separator has a short circuit prevention effect improved by controlling the shape of a dendrite. In the nonaqueous electrolyte secondary battery separator, w…

DRIVE·Sep 22·1 min read

H01M50/417 Sumitomo Chemical Company, Limited

NONAQUEOUS ELECTROLYTE SECONDARY BATTERY LAMINATE, NONAQUEOUS ELECTROLYTE SECONDARY BATTERY MEMBER, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

A nonaqueous electrolyte secondary battery laminate is provided which has a short circuit prevention effect improved by controlling the shape of a dendrite. The nonaqueous electrolyte secondary batter…

DRIVE·Sep 22·1 min read

H01M50/417 Sumitomo Chemical Company, Limited

NONAQUEOUS ELECTROLYTE SECONDARY BATTERY SEPARATOR

A nonaqueous electrolyte secondary battery separator which has a low shutdown temperature, a high mechanical strength, and a high ion permeability is provided. The nonaqueous electrolyte secondary bat…

DRIVE·Dec 2·1 min read

H01M50/417 Sumitomo Chemical Company, Limited

SEPARATOR FILM CONVEYANCE DEVICE FOR NONAQUEOUS ELECTROLYTIC-SOLUTION SECONDARY BATTERY AND METHOD FOR MANUFACTURING SEPARATOR FILM FOR NONAQUEOUS ELECTROLYTIC-SOLUTION SECONDARY BATTERY

A nonaqueous electrolyte secondary battery separator film transfer device is provided which realizes a foreign object removing technique that is less likely to cause defects in a separator. The device…

DRIVE·Jun 17·1 min read

H01M50/403 Sumitomo Chemical Company, Limited

LITHIUM METAL COMPOSITE OXIDE POWDER, POSITIVE ELECTRODE ACTIVE SUBSTANCE FOR LITHIUM SECONDARY BATTERY, POSITIVE ELECTRODE, AND LITHIUM SECONDARY BATTERY

A lithium metal composite oxide powder including: secondary particles that are aggregates of primary particles, and single particles that are present independently of the secondary particles, wherein …

DRIVE·Mar 18·1 min read

H01M4/525 Sumitomo Chemical Company, Limited

NONAQUEOUS ELECTROLYTE SECONDARY BATTERY SEPARATOR AND METHOD OF PRODUCING SAME

A nonaqueous electrolyte secondary battery separator is provided in which thickness unevenness caused by wrinkles is reduced. The nonaqueous electrolyte secondary battery separator includes a polyolef…

DRIVE·Dec 5·1 min read

H01M2/1653 Sumitomo Chemical Company, Limited

METHOD FOR PRODUCING SLIT SEPARATOR AND METHOD FOR PRODUCING SEPARATOR ROLL

A good-quality slit separator having a small amount of fuzziness at a slit part thereof is to be obtained. The present invention includes: a step (S) of conveying an original sheet (S); and a step (S)…

DRIVE·Oct 26·1 min read

B26D1/025 Sumitomo Chemical Company, Limited

METHOD FOR MANUFACTURING SEPARATOR WEB, METHOD FOR MANUFACTURING SEPARATOR, SEPARATOR WEB, AND APPARATUS FOR MANUFACTURING SEPARATOR WEB

To easily specify the position of a defect in a separator, a method for producing a separator original sheet () includes the steps of: forming a separator original sheet () including a separator origi…

DRIVE·Oct 26·1 min read

G01N21/892 Sumitomo Chemical Company, Limited