BINDER COMPOSITION FOR POWER STORAGE DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a binder material which is superior in resistance against oxidation and reduction and which can deliver a power storage device such that the balance between durability and charge/discharge characteristic (especially, high-speed discharge characteristic) are achieved.SOLUTION: A binder composition for a power storage device comprises: a polymer having 3-40 mass% of first repeating units originating an unsaturated carboxylic ester having at least an alicyclic hydrocarbon group, and 1-40 mass% of second repeating units originating from α,β-unsaturated nitrile compounds to 100 mass% of all of repeating units in total. It is preferable that the polymer further include 3-40 mass% of repeating units originating from an unsaturated carboxylic ester having an alicyclic hydrocarbon group.SELECTED DRAWING: None