BINDER FOR ELECTRODE OF LITHIUM SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERY USING ELECTRODE MANUFACTURED USING THE BINDER

摘要

PROBLEM TO BE SOLVED: To provide a binder which improves adhesiveness to a collector, prevents occurrence of exfoliation during pressing, has high flexibility and is improved in a binding property and electrolyte resistance, and a lithium secondary battery improved in charging/discharging properties employing an electrode manufactured using the binder.SOLUTION: A binder for an electrode of a lithium secondary battery contains a polyurethane water dispersion formed from: polyisocyanate (component A); a chemical compound including two or more active hydrogen groups (component B); a chemical compound including one or more active hydrogen groups and hydrophilic groups (component C); and a chain extension agent (component D). The binder for the electrode of the lithium secondary battery is characterized in that the (component D) contains an alkoxy silane derivative.