Platinum-Iron Alloy Nanoparticles Dispersed Multiwalled Carbon Nanotubes As Cathode Electrocatalyst for PEMFC

Author

Vinayan, B.P. ; Sahoo, Madhumita ; Ramaprabhu, Sundara

Author_Institution

Dept. of Phys., Indian Inst. of Technol. Madras (IITM), Chennai, India

fYear

2011

fDate

8-10 Dec. 2011

Firstpage

1

Lastpage

5

Abstract

The performance of platinum nanoparticles dispersed functionalized multiwalled carbon nanotubes (Pt/f-MWNTs) and platinum-iron alloy nanoparticles dispersed functionalized multiwalled carbon nanotubes (Pt₃Fe/f-MWNTs) electrocatalysts have been investigated for oxygen reduction reaction in a polymer electrolyte membrane fuel cell. The electrocatalysts have been synthesized by sodium borohydride reduction method. Pt₃Fe/f-MWNTs give the highest performance with a maximum power density of 432 mWcm^-2 at 60°C without any back pressure. The enhanced catalytic activity of Pt₃Fe/f-MWNTs towards ORR is due to proper alloying, uniform dispersion and optimum particle size of Pt₃Fe alloy nanoparticles over the surface of f-MWNTs.

Keywords

carbon nanotubes; catalysis; catalysts; disperse systems; electrochemical electrodes; electrochemistry; iron alloys; nanoparticles; oxidation; particle size; platinum alloys; proton exchange membrane fuel cells; reduction (chemical); ORR; PEMFC; PtFe-C; catalytic activity; cathode electrocatalyst; oxygen reduction reaction; particle size; platinum-iron alloy nanoparticles dispersed functionalized multiwalled carbon nanotube; polymer electrolyte membrane fuel cell; power density; sodium borohydride reduction method; temperature 60 degC; Carbon nanotubes; Cathodes; Fuel cells; Iron; Nanoparticles; Surface morphology;

fLanguage

English

Publisher

ieee

Conference_Titel

Nanoscience, Technology and Societal Implications (NSTSI), 2011 International Conference on

Conference_Location

Bhubaneswar

Print_ISBN

978-1-4577-2035-2

Type

conf

DOI

10.1109/NSTSI.2011.6111795

Filename

6111795