Another popular strategy is to mix ILs with organic solvents to form hybrid electrolytes with improved performance by decreasing the viscosity . Generally, conventional standard organic electrolytes based on 1M LiPF6/ethylene/EC/DMC electrolyte solutions are highly volatile, flammable and have low cathodic stability . To mitigate these problems, the addition of ILs into organic solvent electrolytes improves electrochemical stability, which in most cases, is higher than organic solvent based electrolytes. For example, mixing 70 wt% of 1-butyl-1-methylpyrrolidinium hexafluorophosphate ([Py 14 ]PF 6 ) IL with conventional standard organic electrolytes based on 1M LiPF 6 /EC/DMC electrolyte solutions improved the thermal stability and the flash point of the electrolyte from 22˚C to 51˚C while maintaining the ionic conductivity more than 10 -3 Scm -1 at room temperature, which satisfies the requirement for the applications of safe LIBs .