Preparation of PBI membranes with controlled thickness for use in PEMFCs and the impact on water and phosphoric acid uptake

Protonated poly (2,2′‐m‐phenylene‐5,5′‐bibenzimidazole) (PBI) membranes are good electrolytes for proton‐exchange membrane fuel cells (PEMFC) as they can be operated at high temperatures, thus favoring catalysis reaction kinetics, CO elimination, and water management. Electrolyte production from pol...

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