The effect of cerium oxide nanoparticles on a Pt/C electrocatalyst synthesized by a continuous two-step process for low-temperature fuel cell

An effective method was developed for preparing highly dispersed CeO 2 nanoparticle on a Pt/C catalyst synthesized by a continuous two-step process. From the XRD patterns, the diffraction pattern of the 20Pt–10CeO 2/C catalyst revealed that both crystalline Pt and CeO 2 phases coexisted. The TEM ima...

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Bibliographic Details
Published in:Electrochemistry communications 2008-04, Vol.10 (4), p.592-596
Main Authors: Lim, Dong-Ha, Lee, Weon-Doo, Choi, Dong-Hyeok, Kwon, Heock-Hoi, Lee, Ho-In
Format: Article
Language:English
Subjects:
Applied sciences
Cathode electrocatalyst
Cerium oxide
Energy
Energy. Thermal use of fuels
Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc
Exact sciences and technology
Fuel cells
Low-temperature fuel cell
Oxygen reduction reaction
Two-step process
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Summary:An effective method was developed for preparing highly dispersed CeO 2 nanoparticle on a Pt/C catalyst synthesized by a continuous two-step process. From the XRD patterns, the diffraction pattern of the 20Pt–10CeO 2/C catalyst revealed that both crystalline Pt and CeO 2 phases coexisted. The TEM images show that the Pt and CeO 2 nanoparticles were well-dispersed on the surface of the carbon support, which is known to be important for activity in the ORR test. In the ORR and single-cell tests, the 20Pt–10CeO 2/C catalyst showed higher performance than a commercial 20Pt/C catalyst, owing to the oxygen storage capacity of CeO 2 and its ability to rapidly exchange oxygen with oxygen in the buffer.
ISSN:1388-2481
1873-1902
DOI:10.1016/j.elecom.2008.02.001