Single lithium-ion conducting polymer electrolytes based on poly[(4-styrenesulfonyl)(trifluoromethanesulfonyl)imide] anions

► Single lithium-ion conducting polymer electrolytes based on highly delocalized polyanions are prepared. ► Phase behavior and transport properties are measured. ► They show high lithium ion transference number approaching unity. ► They show high ionic conductivity at room temperature.