Abstract: Disclosed is preparation of a freestanding ion gel having high stability and high ionic conductivity based on surface-activity ionic liquids. Further, disclosed is a solid electrolyte using the ion gel. A method for preparing the freestanding ion gel include mixing a surface-activity ionic liquid having an alkyl group having 8 or greater carbon atoms, a crosslinking agent, water and oil with each other to form a bicontinuous microemulsion mixture; ii) adding an initiator to the mixture; and iii) curing the mixture using ultraviolet (UV) or thermal energy to form a freestanding ion gel.

Abstract: Proposed are a non-aqueous freestanding ion conductive gel for application to an electrolyte of a lithium secondary battery and a preparation method thereof. The non-aqueous freestanding ion conductive gel including: a matrix including a hydrophobic polymer famed through polymerization of monomers having an unsaturated double-bond; a domain dispersed in the matrix and including a hydrophilic ionic liquid; and a surface active layer including an ionic liquid having surface activity, in which a portion of a hydrophobic segment in a chain of the ionic liquid having surface activity is positioned in the matrix, and a portion of a hydrophilic segment in the chain is positioned in the domain. The gel has high ionic conductivity, high lithium ion transference number, and excellent mechanical strength.

Abstract: Disclosed is preparation of a freestanding ion gel having high stability and high ionic conductivity based on surface-activity ionic liquids. Further, disclosed is a solid electrolyte using the ion gel. A method for preparing the freestanding ion gel include mixing a surface-activity ionic liquid having an alkyl group having 8 or greater carbon atoms, a crosslinking agent, water and oil with each other to form a bicontinuous microemulsion mixture; ii) adding an initiator to the mixture; and iii) curing the mixture using ultraviolet (UV) or thermal energy to form a freestanding ion gel.