Effect of Nafion ionomer and catalyst in cathode layers for the direct formic acid fuel cell with complex capacitance analysis on the ionic resistance

Jong Hyun Jang, Sunhyung Kim, Jonghee Han, Yongchai Kwon, Soo Kil Kim, Kug Seung Lee, Byungseok Lee, Tae Hoon Lim

Research output: Contribution to journalConference article

Abstract

Direct formic acid fuel cells (DFAFCs) MEAs were fabricated by using Pt black and Pt/C as cathode catalysts, with various amount of Nafion ionomer. The effect of ionomer content on oxygen reduction reaction (ORR) activities was examined by single cell test, and the MEAs were electrochemically characterized by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). Especially the ionic resistances of cathode layers were measured by the complex capacitance analysis of experimental impedance data. The influence of charge transfer reaction on Pt and mass transport of proton and oxygen in the catalyst layers (CL) were discussed for the DFAFC MEAs based on Pt black and Pt/C catalysts.

Original languageEnglish
JournalACS National Meeting Book of Abstracts
Publication statusPublished - 2011
Event242nd ACS National Meeting and Exposition - Denver, CO, United States
Duration: 2011 Aug 282011 Sep 1

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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