MIXTURE PASTE FOR NEGATIVE ELECTRODE OF LITHIUM ION SECONDARY BATTERY, NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY, METHOD FOR PRODUCING NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY, AND LITHIUM ION SECONDARY BATTERY

摘要

The objective of the present invention is to provide a mixture paste that is for the production of a negative electrode for a lithium ion secondary battery, that is not prone to cycle deterioration as a result of changes in volume, and that is not prone to decreases in initial charge/discharge efficiency as a result of reduction of a polyimide during charging. This objective is achieved by a mixture paste for a negative electrode of a lithium ion secondary battery comprising: a binder resin composition that comprises a polyamic acid and/or a corresponding polyimide, said polyamic acid being obtained from a diamine compound and a tetracarboxylic acid dianhydride, and said diamine compound comprising a diamine represented by formula (I) or (II); and a negative electrode active substance containing a silicon oxide represented by SiOx (0.5 ≤ x ≤ 1.5) and carbon particles.