Patent ID: 9123971
Filing Date: 2015-09-01
Classification: H01M,Y02E,Y02P,Y02T

Abstract:
1. A secondary battery, comprising an electrode assembly in which a positive electrode and a negative electrode are oppositely disposed, an electrolyte liquid, and a package which encloses the electrode assembly and the electrolyte liquid inside; wherein the negative electrode is formed by binding a negative electrode active substance, which comprises a metal (a) that can be alloyed with lithium, a metal oxide (b) that can absorb and desorb lithium ion, and a carbon material (c) that can absorb and desorb lithium ion, to a negative electrode collector with at least one selected from polyimides and polyamide-imides; and wherein the electrolyte liquid comprises a compound represented by any one of following formulae (1)-(3), (5), (8) and (9): (R 1 represents hydrogen atom, an alkyl group, an aryl group, an amino group, hydroxy group or a halogen atom, wherein the alkyl group or the aryl group may be substituted), (Ra represents hydrogen atom, an alkyl group, an aryl group, an amino group, hydroxy group or a halogen atom, wherein the alkyl group or the aryl group may be substituted), (R 2 represents hydrogen atom, an alkyl group, an aryl group, an amino group, hydroxy group or a halogen atom, wherein the alkyl group or the aryl group may be substituted), (R 4 represents hydrogen atom, an alkyl group, an aryl group, an amino group, hydroxy group or a halogen atom, wherein the alkyl group or the aryl group may be substituted), (R