TY - JOUR
T1 - Polybenzimidazole/1H-imidazole-4-sulfonic acid hybrid membranes for high-temperature proton exchange membranes fuel cells
AU - Shen, Cheng Hsun
AU - Hsu, Steve Lien chung
AU - Bulycheva, Elena
AU - Belomoina, Natalya
N1 - Funding Information:
The financial support provided by the National Science Council (Taiwan, ROC) through project NSC100-2221-E-006-052-MY3 is greatly appreciated.
PY - 2012/5/1
Y1 - 2012/5/1
N2 - A new sulfonated organic compound, 1H-imidazole-4-sulfonic acid (ImSA), was successfully synthesized. A series of the polybenzimidazole (PBI)/1H-imidazole-4-sulfonic acid hybrid membranes were prepared from an organosoluble, fluorine-containing PBI with ImSA to improve the conductivity of PBI membranes. The introduction of ImSA rendered the plasticizing effect of the PBI membranes with the increase of elongation at break. The conductivity of the phosphoric acid doped PBI/ImSA hybrid membranes increased with both the temperature and the ImSA content. The conductivity of acid doped PBI/ImSA could reach 7×10 -2 (S/cm) at 160°C. The addition of ImSA could significantly improve the conductivity, but it slightly reduces the mechanical properties of the pristine PBI membranes.
AB - A new sulfonated organic compound, 1H-imidazole-4-sulfonic acid (ImSA), was successfully synthesized. A series of the polybenzimidazole (PBI)/1H-imidazole-4-sulfonic acid hybrid membranes were prepared from an organosoluble, fluorine-containing PBI with ImSA to improve the conductivity of PBI membranes. The introduction of ImSA rendered the plasticizing effect of the PBI membranes with the increase of elongation at break. The conductivity of the phosphoric acid doped PBI/ImSA hybrid membranes increased with both the temperature and the ImSA content. The conductivity of acid doped PBI/ImSA could reach 7×10 -2 (S/cm) at 160°C. The addition of ImSA could significantly improve the conductivity, but it slightly reduces the mechanical properties of the pristine PBI membranes.
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U2 - 10.1016/j.memsci.2012.01.016
DO - 10.1016/j.memsci.2012.01.016
M3 - Article
AN - SCOPUS:84857915150
SN - 0376-7388
VL - 399-400
SP - 11
EP - 15
JO - Journal of Membrane Science
JF - Journal of Membrane Science
ER -