Abstract:

Ionic liquids（ILs）are organic salts generally composed of an organic cation and either an organic or inorganic anion with a low melting point（＜100 ℃），low flammability，negligible vapor pressure，high ionic conductivity，wide electrochemical window and broad adjustable properties. In the past two decades，ionic liquids have been widely used as “green solvents” replacing traditional organic solvents for gas separation and supported liquid membrane. Polymerizable ionic liquis（PILs）are a class of ionic liquids that contain polymerizable groups such as carbon-carbon double bond. Solid polymerized ionic liquids were found to absorb carbon dioxide with a higher absorption capacity at a much faster absorption rate than room-temperature ionic liquids. We have prepared ion conductive membrane with high stability，high strength and high conductivity by using the blend of PVDF and PILs. Ionic liquids provided a new development platform for researches in mitigation of energy shortages and environmental pollutions.