Assemblies of protective anion exchange membrane on air electrode for its efficient operation in aqueous alkaline electrolyte

The versatile, functional polyether, polyepichlorohydrin: History, synthesis, and applications

“…[110][111][112] Interpenetrating networks (IPNs) of crosslinked PECH and another crosslinked polymer have also been used as AEMs. 113,114 Crosslinking is generally achieved through quaternization of a di-functional tertiary amine like 1,4-diazabicyclo[2.2.2] octane (DABCO). PECH can also be grafted to mechanically robust polymers modified with pendant amines like poly(arylene ether ketone).…”

Stability in alkaline aqueous electrolyte of air electrode protected with fluorinated interpenetrating polymer network membrane

“…The membrane/air electrode assemblies (MEA) were prepared by directly synthesizing the membrane over the air electrode as described elsewhere [9]. They were characterized by electrochemical experiments performed in a homemade conventional three-electrode half-cell.…”

“…PECH/Fluorolink IPNs with different compositions were thus synthesized directly over the catalyst side of the air electrode, as previously detailed [9]. The IPN thickness was fixed by a 500 mm thick Teflon gasket.…”

“…six times higher than the bare electrode under the same conditions [8]. The air electrode stability has been then increased to more than 600 h by optimizing the interface between the polymer membrane and the air electrode and the intrinsic properties of the membrane (ionic conductivity and selectivity) [9].…”