460041 Chemical Stability and Ion Transport in Polymerized Ionic Liquid Anion Exchange Membranes
Considering the high alkaline chemical stability of the styrene/pyrrolidinium-based PIL, the conductivity and chemical stability of a PIL block copolymer (ABCBA pentablock terpolymer) with a styrene/pyrrolidinium-based PIL block was investigated. A high hydroxide conductivity of 43.4 mS cm-1 at 60 °C in liquid water was achieved and no degradation or loss of conductivity was observed in the membrane after 168 h in 1 M KOH at 60 °C. PIL block copolymers utilizing a styrene/pyrrolidinium backbone/cation pairing in the PIL block represent a promising chemistry for producing highly conductive, chemically stable, robust AEMs for implementation in future solid-state AFCs.
See more of this Group/Topical: Materials Engineering and Sciences Division