Hwang, Kyungho; Kim, Jun-Hyun; Kim, Sung-Yul; Byun, Hongsik - In: Energies 7 (2014) 3, pp. 1721-1732
Various polybenzimidazole (PBI)-based ion-exchange films were prepared and thoroughly characterized by Fourier transform infrared (FT-IR) spectroscopy, proton conductivity, and water uptake for possible use as fuel cell membranes. Upon the increase in the flexibility of the PBI-based polymer...