Effect of Nafion Ionomer and Catalyst in Cathode Layers for the Direct Formic Acid Fuel Cell with Complex Capacitance Analysis on the Ionic Resistance
- Effect of Nafion Ionomer and Catalyst in Cathode Layers for the Direct Formic Acid Fuel Cell with Complex Capacitance Analysis on the Ionic Resistance
- 장종현; 김선형; 한종희; 권용재; 김수길; 이병석; 이국승; 남석우; 임태훈
- DFAFC; MEA; Nafion; Impedance
- Issue Date
- 220th ECs meeting
- Even though the same ORR reactions occur in
PEMFCs, DMFCs, and DFAFCs, the effect of ionomer
content on each fuel cell system is not the same because
their electrode structures and operating conditions such as
the loading amount of metal catalysts and operating
temperature are significantly different. In this study,
DFAFC 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 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.
- Appears in Collections:
- KIST Publication > Conference Paper
- Files in This Item:
There are no files associated with this item.
- RIS (EndNote)
- XLS (Excel)
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.