Polybenzimidazole/1H-imidazole-4-sulfonic acid hybrid membranes for high-temperature proton exchange membranes fuel cells

Cheng Hsun Shen, Lien-Chung Hsu, Elena Bulycheva, Natalya Belomoina

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)11-15
Number of pages5
JournalJournal of Membrane Science
Volume399-400
DOIs
Publication statusPublished - 2012 May 1

Fingerprint

polybenzimidazole
Sulfonic Acids
sulfonic acid
Proton exchange membrane fuel cells (PEMFC)
imidazoles
fuel cells
Protons
Cell Membrane
membranes
Membranes
Temperature
protons
Acids
conductivity
Fluorine
imidazole
phosphoric acid
organic compounds
Organic compounds
Phosphoric acid

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Filtration and Separation

Cite this

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abstract = "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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Polybenzimidazole/1H-imidazole-4-sulfonic acid hybrid membranes for high-temperature proton exchange membranes fuel cells. / Shen, Cheng Hsun; Hsu, Lien-Chung; Bulycheva, Elena; Belomoina, Natalya.

In: Journal of Membrane Science, Vol. 399-400, 01.05.2012, p. 11-15.

Research output: Contribution to journalArticle

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, Lien-Chung

AU - Bulycheva, Elena

AU - Belomoina, Natalya

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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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