Fluorinated Hydrogen Bonded Electrolytes of PVA/Nafion® and PAH/Nafion® Complexes

摘要

The newly discovered polyelectrolyte (PE) self-assembly by fluorinated hydrogen bonding (FHB) is harnessed to assemble FHB films and hydrogels. PE couples of poly(vinyl alcohol)/ perfluorosulfonic acid PTFE copolymer (PVA/Nafion®) or poly(allyl amine) PAH/Nafion® would self assemble into layer-by-layer films or FHB hydrogels under high centrifuge using controlled pH and ion strength conditions. After centrifuge, FHB hydrogels can be isolated from their liquor, washed, and sliced. Selected physical properties such as stability, solubility, molecular partitioning, and ion conductivity are discussed therein aided by ATR-FTIR and potentiostatic/ac impedance analysis. Stability to a wide pH range and relatively high ionic conductivity (i.e. > 0.1 Scm~(-1)) makes these FHB gels potential candidates for electrolyte applications in solid-state electrochemical systems.