Abstract
The conductivity and anodic stability of ternary mixed ionic liquid (IL) electrolytes consisting of pyrrolidinium [N-butyl-N-methylpyrrolidinium+ (PYR14+)] and imidazolium [1-butyl-3-methylimidazolium+ (BMIM+)] based bis(trifluoromethylsulfonyl) imide (TFSI−) with 0.5 M LiTFSI salt were investigated. PYR14TFSI ionic liquid has been reported to be stable under an oxidative environment, while BMIMTFSI provides good ionic conductivity. A conductivity study of IL electrolytes revealed a linear correlation of conductivity as a function of IL – Li salt concentration and IL volume fraction. As a result, improved battery cycling in a mixture of 4:1 (80/20 v/v%) BMIM+: PYR14+ was observed with a specific capacity of 330 mAh.g−1 over 50 cycles at a current density of 0.1 mA.cm−2. Also, an EIS study revealed decreasing cathode polarization by demonstrating lower impedance values for ternary mixed electrolyte than that of the pure electrolytes upon cycling.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
