Redox shuttles having an aromatic ring fused to a 1,1,4,4-tetrasubstituted cyclohexane ring

摘要

An electrolyte includes an alkali metal salt; an aprotic solvent; and a redox shuttle additive including an aromatic compound having at least one aromatic ring fused with at least one non-aromatic ring, the aromatic ring having two or more oxygen or phosphorus-containing substituents.

主权项

1. An electrolyte comprising:
an alkali metal salt; an aprotic solvent; and a redox shuttle additive comprising a compound represented by Formula I, II, III, or IV: wherein:
R1 and R2 are independently substituted or unsubstituted C1-C20 alkyl, substituted or unsubstituted C1-C20 fluoroalkyl, substituted or unsubstituted C1-C20 ether, P(O)R9R10, P(O)(OR9)(OR10), or P(OR9)(OR10);R3, R4, R5 and R6 are independently F, substituted or unsubstituted C1-C20 fluoroalkyl, or substituted or unsubstituted C1-C20 alkyl;R7, and R8 are independently H, substituted or unsubstituted C1-C20 alkyl, substituted or unsubstituted C1-C20 fluoroalkyl, or substituted or unsubstituted C1-C20 alkoxy;R9 and R10 are independently substituted or unsubstituted C1-C20 alkyl or substituted or unsubstituted C1-C20 fluoroalkyl,;X is alkylene, BR11, or P(O)OR12;R11 is substituted or unsubstituted C1-C20 alkyl, substituted or unsubstituted C1-C20 fluoroalkyl, or substituted or unsubstituted C1-C12 aryl; and R12 is substituted or unsubstituted C1-C20 alkyl, or substituted or unsubstituted C1-C20 fluoroalkyl.