Anionic membrane and ionomer based on poly(2,6-dimethyl-1,4-phenylene oxide) for alkaline membrane fuel cells

Ai Lien Ong, Saeed Saad, Rong Lan, Robert J. Goodfellow, Shanwen Tao

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

Hydroxyl-ion conductive poly(2,6-dimethyl-1,4-phenylene oxide) (PPO) membranes with different characteristics were prepared via relatively simple bromination/amination serial reactions with reduced number of involved chemicals and shorter reaction time. The effects of reactants ratio, reaction atmosphere, polymer concentration, casting solvent, and hydroxylation treatment on reaction were investigated in details. The microstructure, water uptake, swelling ratio, ion-exchange capacity and ionic conductivity of the membranes were also studied. The obtained results demonstrate that, the ionic conductivity of the membrane is dependent on casting solvent. The N-methyl-2-pyrrolidonecast membrane exhibits the highest conductivity with the thinnest film. Although the membrane was prepared via a relatively simple preparation route with least toxic chemicals, a competitive ionic conductivity value of 1.64 x 10(-2) S cm(-1) was achieved at 60 degrees C. A power density of 19.5 mW cm(-2) has been demonstrated from the alkaline membrane fuel cell operated at 70 degrees C. assembled from the entirely homemade membrane electrode assembly without any hot-pressing.

Original languageEnglish
Pages (from-to)8272-8279
Number of pages8
JournalJournal of Power Sources
Volume196
Issue number20
DOIs
Publication statusPublished - 15 Oct 2011

Keywords

  • Alkaline membrane fuel cell
  • Amination
  • Bromination
  • Ionic conductivity
  • PPO
  • exchange membrane
  • electrodes

Fingerprint Dive into the research topics of 'Anionic membrane and ionomer based on poly(2,6-dimethyl-1,4-phenylene oxide) for alkaline membrane fuel cells'. Together they form a unique fingerprint.

  • Cite this