Fast protonic conductivity in crystalline benzenehexasulfonic acid hydrates

Evgeny M. Garanin, Yuriy V. Tolmachev, Scott D. Bunge, Anatoly K. Khitrin, Alexander N. Turanov, Andrey Malkovskiy, Alexei P. Sokolov

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

We report on the crystal structures of two hydrates of benzenehexasulfonic acid, its water sorption isotherm, temperature- and humidity-dependent conductivity, along with 1H NMR studies. At comparable humidities and temperatures, this crystalline material shows conductivity similar to Nafion, which conducts protons via liquid water channels. We believe that the presented discovery of fast protonic conductivity in benzenehexasulfonic acid at low humidities is encouraging for further efforts in developing highly sulfonated polymers as membranes for fuel cells.

Original languageEnglish
Pages (from-to)549-560
Number of pages12
JournalJournal of Solid State Electrochemistry
Volume15
Issue number3
DOIs
StatePublished - Mar 2011
Externally publishedYes

Keywords

  • Fast protonic conductivity
  • Humidity
  • NMR
  • Proton conductor
  • Sulfonic acid
  • Zundel ion

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