Polymeric Ionic Liquid Gel Electrolyte for Room Temperature Lithium Battery Applications
By Meer Safa and Amir Chamaani and Neha Chawla and Bilal El-Zahab
Published in Electrochimica Acta
2016
Abstract
Free-standing gel polymer electrolytes (GPE) composed of the polymeric ionic liquid poly[diallyldimethylammonium] bis(trifluoromethane) sulfonimide, the ionic liquid 1-ethyl-3-methylimidazolium bis(trifluoromethane) sulfonimide, and lithium salt are reported for their use in lithium batteries. The \GPEs\ are thermally stable and contain ionic liquid and salt contents of up to 80 wt.% which results in highly ionically conductive electrolyte films with ? = 3.35 mS cm?1. The affinity of the polymeric ionic liquid with the ionic liquid and salt components of the \GPE\ allows wide electrochemical stability window ?0.1