Evaluation of hydrogen and methanol fuel cell performance of sulfonated diels alder poly(phenylene) membranes

Ronald J. Stanis, Melissa A. Yaklin, Chris J. Cornelius, Tsutomu Takatera, Akimasa Umemoto, Andrea Ambrosini, Cy H. Fujimoto

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

Hydrogen fuel cell performance of sulfonated diels alder poly(phenylene) (SDAPP) with IECs ≥ 1.8 meq g-1 is comparable to Nafion 212 under fully humidified conditions at 80 °C. However, as relative humidity is reduced, performance loss is substantial for SDAPP when compared to Nafion 212. This loss can be attributed to the large drop in proton conductivity in SDAPP as relative humidity is reduced; the proton conductivity of SDAPP with an IEC of 2.3 meq g-1 dropped from 0.117 S cm-1 to 0.001 S cm-1 as the relative humidity was reduced from 100% to 25% at 80 °C. Methanol fuel cell experiments using 3 M methanol result in a 60 mV performance improvement at 25 mA cm-2 when using SDAPP with an IEC of 1.2 meq g-1 instead of Nafion 212. This improvement is due to lower methanol permeability of SDAPP (1.4 meq g-1) over Nafion 212, with SDAPP films having methanol permeabilities less than 25% of Nafion 212.

Original languageEnglish (US)
Pages (from-to)104-110
Number of pages7
JournalJournal of Power Sources
Volume195
Issue number1
DOIs
StatePublished - Jan 1 2010

Keywords

  • Fuel cell
  • Hydrogen
  • Methanol
  • Proton conductivity
  • Sulfonated diels alder poly(phenylene) (SDAPP)

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Evaluation of hydrogen and methanol fuel cell performance of sulfonated diels alder poly(phenylene) membranes'. Together they form a unique fingerprint.

Cite this