Highly Stable and Active Pt/Nb-TiO2 Carbon-Free Electrocatalyst for Proton Exchange Membrane Fuel Cells
The current materials used in proton exchange membrane fuel cells (PEMFCs) are not sufficiently durable for commercial deployment. One of the major challenges lies in the development of an inexpensive, efficient, and highly durable and active electrocatalyst. Here a new type of carbon-free Pt/Nb-TiO...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | Journal of Nanotechnology |
| Online Access: | http://dx.doi.org/10.1155/2012/389505 |
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| author | Shuhui Sun Gaixia Zhang Xueliang Sun Mei Cai Martin Ruthkosky |
| author_facet | Shuhui Sun Gaixia Zhang Xueliang Sun Mei Cai Martin Ruthkosky |
| author_sort | Shuhui Sun |
| collection | DOAJ |
| description | The current materials used in proton exchange membrane fuel cells (PEMFCs) are not sufficiently durable for commercial deployment. One of the major challenges lies in the development of an inexpensive, efficient, and highly durable and active electrocatalyst. Here a new type of carbon-free Pt/Nb-TiO2 electrocatalyst has been reported. Mesoporous Nb-TiO2 hollow spheres were synthesized by the sol-gel method using polystyrene (PS) sphere templates. Pt nanoparticles (NPs) were then deposited onto mesoporous Nb-TiO2 hollow spheres via a simple wet-chemical route in aqueous solution, without the need for surfactants or potentiostats. The growth densities of Pt NPs on Nb-TiO2 supports could be easily modulated by simply adjusting the experimental parameters. Electrochemical studies of Pt/Nb-TiO2 show much enhanced activity and stability than commercial E-TEK Pt/C catalyst. PtNP/Nb-TiO2 is a promising new cathode catalyst for PEMFC applications. |
| format | Article |
| id | doaj-art-09fcca0874f44ddcb2d6510cb26632d8 |
| institution | Kabale University |
| issn | 1687-9503 1687-9511 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Nanotechnology |
| spelling | doaj-art-09fcca0874f44ddcb2d6510cb26632d82025-02-03T05:53:01ZengWileyJournal of Nanotechnology1687-95031687-95112012-01-01201210.1155/2012/389505389505Highly Stable and Active Pt/Nb-TiO2 Carbon-Free Electrocatalyst for Proton Exchange Membrane Fuel CellsShuhui Sun0Gaixia Zhang1Xueliang Sun2Mei Cai3Martin Ruthkosky4General Motors Global Research and Development Center, Warren, MI 48090-9055, USAGeneral Motors Global Research and Development Center, Warren, MI 48090-9055, USADepartment of Mechanical and Materials Engineering, The University of Western Ontario, London, ON, N6A 5B9, CanadaGeneral Motors Global Research and Development Center, Warren, MI 48090-9055, USAGeneral Motors Global Research and Development Center, Warren, MI 48090-9055, USAThe current materials used in proton exchange membrane fuel cells (PEMFCs) are not sufficiently durable for commercial deployment. One of the major challenges lies in the development of an inexpensive, efficient, and highly durable and active electrocatalyst. Here a new type of carbon-free Pt/Nb-TiO2 electrocatalyst has been reported. Mesoporous Nb-TiO2 hollow spheres were synthesized by the sol-gel method using polystyrene (PS) sphere templates. Pt nanoparticles (NPs) were then deposited onto mesoporous Nb-TiO2 hollow spheres via a simple wet-chemical route in aqueous solution, without the need for surfactants or potentiostats. The growth densities of Pt NPs on Nb-TiO2 supports could be easily modulated by simply adjusting the experimental parameters. Electrochemical studies of Pt/Nb-TiO2 show much enhanced activity and stability than commercial E-TEK Pt/C catalyst. PtNP/Nb-TiO2 is a promising new cathode catalyst for PEMFC applications.http://dx.doi.org/10.1155/2012/389505 |
| spellingShingle | Shuhui Sun Gaixia Zhang Xueliang Sun Mei Cai Martin Ruthkosky Highly Stable and Active Pt/Nb-TiO2 Carbon-Free Electrocatalyst for Proton Exchange Membrane Fuel Cells Journal of Nanotechnology |
| title | Highly Stable and Active Pt/Nb-TiO2 Carbon-Free Electrocatalyst for Proton Exchange Membrane Fuel Cells |
| title_full | Highly Stable and Active Pt/Nb-TiO2 Carbon-Free Electrocatalyst for Proton Exchange Membrane Fuel Cells |
| title_fullStr | Highly Stable and Active Pt/Nb-TiO2 Carbon-Free Electrocatalyst for Proton Exchange Membrane Fuel Cells |
| title_full_unstemmed | Highly Stable and Active Pt/Nb-TiO2 Carbon-Free Electrocatalyst for Proton Exchange Membrane Fuel Cells |
| title_short | Highly Stable and Active Pt/Nb-TiO2 Carbon-Free Electrocatalyst for Proton Exchange Membrane Fuel Cells |
| title_sort | highly stable and active pt nb tio2 carbon free electrocatalyst for proton exchange membrane fuel cells |
| url | http://dx.doi.org/10.1155/2012/389505 |
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