Electrochemical applications A relatively low-viscosity, non-flammable liquid showing electric conductivity and wide electrochemical windows: this is a combination of properties not achievable with any other material than ionic liquids. Some examples where ionic liquids offer new opportunities: higher efficiency and safety in lithium ion batteries higher capacities and safety in supercapacitors electrolytes in dye-sensitized solar cells

"Low viscous, non volatile liquids showing electric conductivity - this is not achievable with any other material than Ionic Liquids, qualifying them as new materials for electrolytes."   Dr. Uwe Vagt, BASF SE

Ionic liquids in Dye Sensitized Solar Cells („Graetzel-Cells“)