Impact of different synthesis methods on the electrocatalytic activity and stability of Pd-Fe/C nanoparticles for oxygen reduction reaction in fuel Cells

DOI

10.2991/iceti-16.2016.24How to use a DOI?

Keywords

Palladium-iron alloy, Microwave polyol method, Impregnation reduction method, Oxygen reduction reaction, Fuel cell.

Abstract

The rational synthesis of active, durable and low cost catalysts has of particular interest for fuel cell applications. The structural properties of fuel cell catalysts can be modulated by different synthesis methods, which significantly influence the oxygen reduction reaction at the cathode. In this study, we describe the effect of microwave and impregnation reduction methods on the electrocatalytic property and stability of carbon supported palladium-iron nanoparticles (Pd3Fe/C) for oxygen reduction reaction in proton exchange membrane fuel cells. The physical and electrochemical properties of the nanoparticles have been characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), cyclic voltammetry (CV) and Rotating Disc Electrode (RDE) techniques. The XRD results revealed that the impregnation reduction method provides better degree of alloying between Pd and Fe relative to microwave assisted polyol reduction method. The nanoparticles prepared by impregnation reduction method exhibit superior ORR mass activity and improved stability compared to those prepared by microwave polyol method. This is attributed to higher degree of alloying, compressive lattice strain and well defined crystal structure resulting from appropriate thermal treatments during preparation.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Esubalew Meku
AU  - Chunyu Du
AU  - Yajing Wang
AU  - Lei Du
PY  - 2016/03
DA  - 2016/03
TI  - Impact of different synthesis methods on the electrocatalytic activity and stability of Pd-Fe/C nanoparticles for oxygen reduction reaction in fuel Cells
BT  - Proceedings of the 2016 International Conference on Engineering and Technology Innovations
PB  - Atlantis Press
SN  - 2352-5401
UR  - https://doi.org/10.2991/iceti-16.2016.24
DO  - 10.2991/iceti-16.2016.24
ID  - Meku2016/03
ER  -