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The anion exchange membrane fuel cells (AEMFCs) have been known to be promising eco-friendly power sources. To develop AEMFCs, the high ion conductivity, good dimensional, mechanical and alkaline stabilities are required for AEMs. However, the high conductivity generally requires high water uptake, which causes an enhanced swelling and decreased mechanical properties for the AEMs. To overcome this problem, we introduced an ionic conductor having long alkyl diammonium groups to alkyl-substituted poly(p-phenylene oxide) (PPO). Addition of this new additive increased the conductivity, mechanical and alkaline stabilities due to the molecular interaction between alkyl chains in PPO and same group of the additive. Synthesis and properties of the corresponding membranes will be discussed in detail.
