Title:
BINDER FOR LITHIUM ION SECONDARY BATTERY ELECTRODES, METHOD FOR MANUFACTURING LITHIUM ION SECONDARY BATTERY ELECTRODE, LITHIUM ION SECONDARY BATTERY ELECTRODE, AND LITHIUM ION SECONDARY BATTERY
Document Type and Number:
Japanese Patent JP2015072901
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a binder for lithium ion secondary battery electrodes which offers good adhesiveness, which is small in the degree of elution and the degree of swelling in a carbonic ester-based electrolytic solution, and which is capable of shrinking or expanding according to the application of a pressure and removal thereof, and capable of keeping following an electrode active material even after the repetition of such expansion or shrinkage.SOLUTION: A binder for lithium ion secondary battery electrodes comprises (A) a cross-linked polyvinyl acetal-based resin which includes structural units given by the formulas (1) to (3), and of which the degree of acetalization is 10-40 mol%. (R1 represents H or an alkyl group with C1-C10.) The formula (3) is a structural unit given by the formula (2) with R1 consisting of a functional group including an unsaturated ethylene bond.
Inventors:
AOYAMA MASATO
AOKI YASUHIRO
SHIBUYA MITSUO
AOKI YASUHIRO
SHIBUYA MITSUO
Application Number:
JP2014180034A
Publication Date:
April 16, 2015
Filing Date:
September 04, 2014
Export Citation:
Assignee:
NIPPON SYNTHETIC CHEM IND
International Classes:
H01M4/62; C08F2/48; C08F8/28; C08F16/06; C08F299/00; C08J3/24; C08K3/04; C08L29/14; H01M4/13; H01M4/139