(a) FTIR spectra of polymer precursors and resulting polymers. (b) Ionic conductivity of HPP and HP electrolytes from 30 to 80 °C, with fitted Arrhenius curves. Chronoamperometric curves of HP (c) and HPP (d) electrolytes, with insets showing impedance before and after polarization. (e) Tafel curves of symmetric cells assembled with HPP and HP electrolytes. (f) Coulombic efficiency measured by the Aurbach method. CCD of HP (g) and HPP (h) electrolytes.