Transport properties and performance of polymer electrolyte membranes for the hybrid sulfur electrolyzer

John A. Staser, Kirsten Norman, Cy H. Fujimoto, Michael Anthony Hickner, John W. Weidner

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

The water transport and SO2 crossover in the hybrid sulfur cycle electrolyzer were quantified for a poly(phenylene)-based proton exchange membrane and compared to the performance of industry-standard Nafion membranes. While Nafion exhibits good performance, there exists the possibility of a significant SO2 crossover, which can modify the electrode composition, consume current that should be used for hydrogen production, introduce SO2 to the hydrogen stream, and result in a loss of sulfur from the system. Recent research has focused on poly(phenylene)-based membranes that have exhibited high current density with good stability (both chemical and temperature) while limiting SO2 crossover. In this paper, we extend our previous water-transport-modeling work on Nafion membranes to this polymer electrolyte and directly compare the two in terms of electrolyzer performance and SO2 crossover. We show the ability of poly(phenylene) membranes to operate at elevated temperatures with improved performance over lower temperatures; the high temperature performance exceeds that of Nafion membranes.

Original languageEnglish (US)
JournalJournal of the Electrochemical Society
Volume156
Issue number7
DOIs
StatePublished - Jun 1 2009

Fingerprint

Sulfur
Transport properties
Electrolytes
Polymers
sulfur
transport properties
electrolytes
membranes
Membranes
crossovers
polymers
Temperature
Water
Chemical stability
hydrogen production
Hydrogen production
water
high current
Protons
Hydrogen

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

Cite this

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Transport properties and performance of polymer electrolyte membranes for the hybrid sulfur electrolyzer. / Staser, John A.; Norman, Kirsten; Fujimoto, Cy H.; Hickner, Michael Anthony; Weidner, John W.

In: Journal of the Electrochemical Society, Vol. 156, No. 7, 01.06.2009.

Research output: Contribution to journalArticle

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