One-Step Synthesized Pt-on-NiCo Nanostructures for Oxygen Reduction with High Activity and Long-Term Stability
A novel particle-on-alloy nanomaterial has been designed and successfully synthesized for oxygen reduction (ORR) with high activity and long-term stability, in which well-isolated Pt nanoparticles are supported by amorphous NiCo nanoalloys. The Pt-on-NiCo nanostructures are prepared through the arti...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | International Journal of Electrochemistry |
| Online Access: | http://dx.doi.org/10.1155/2012/842048 |
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| author | Qiang Qu Ming Wen Mingzhu Cheng Anwei Zhu Biao Kong Yang Tian |
| author_facet | Qiang Qu Ming Wen Mingzhu Cheng Anwei Zhu Biao Kong Yang Tian |
| author_sort | Qiang Qu |
| collection | DOAJ |
| description | A novel particle-on-alloy nanomaterial has been designed and successfully synthesized for oxygen reduction (ORR) with high activity and long-term stability, in which well-isolated Pt nanoparticles are supported by amorphous NiCo nanoalloys. The Pt-on-NiCo nanostructures are prepared through the artificial active collodion membrane by one-step method, and experimental data reveals that Pt is isolated and spreads onto the amorphous NiCo nanosupport, and not only Pt but also Ni and Co are metallic in the Pt-on-NiCo nanostructures. The optimized Pt53-on-NiCo nanostructures show higher activities in both the onset potential and kinetic current density toward the ORR relative to the commercial Pt reference catalysts because the Pt-on-NiCo catalyst could lower the OHad, which is considered to inhibit the ORR toward water. Meanwhile, Pt-on-NiCo nanostructures exhibit relatively long-term stability with only ~8% loss in electrochemical surface area (ECSA) for Pt. |
| format | Article |
| id | doaj-art-9043eb7babc54fbb9c807c533af727e3 |
| institution | OA Journals |
| issn | 2090-3529 2090-3537 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Electrochemistry |
| spelling | doaj-art-9043eb7babc54fbb9c807c533af727e32025-08-20T02:09:14ZengWileyInternational Journal of Electrochemistry2090-35292090-35372012-01-01201210.1155/2012/842048842048One-Step Synthesized Pt-on-NiCo Nanostructures for Oxygen Reduction with High Activity and Long-Term StabilityQiang Qu0Ming Wen1Mingzhu Cheng2Anwei Zhu3Biao Kong4Yang Tian5Department of Chemistry, Tongji University, Siping Road 1239, Shanghai 200092, ChinaDepartment of Chemistry, Tongji University, Siping Road 1239, Shanghai 200092, ChinaDepartment of Chemistry, Tongji University, Siping Road 1239, Shanghai 200092, ChinaDepartment of Chemistry, Tongji University, Siping Road 1239, Shanghai 200092, ChinaDepartment of Chemistry, Tongji University, Siping Road 1239, Shanghai 200092, ChinaDepartment of Chemistry, Tongji University, Siping Road 1239, Shanghai 200092, ChinaA novel particle-on-alloy nanomaterial has been designed and successfully synthesized for oxygen reduction (ORR) with high activity and long-term stability, in which well-isolated Pt nanoparticles are supported by amorphous NiCo nanoalloys. The Pt-on-NiCo nanostructures are prepared through the artificial active collodion membrane by one-step method, and experimental data reveals that Pt is isolated and spreads onto the amorphous NiCo nanosupport, and not only Pt but also Ni and Co are metallic in the Pt-on-NiCo nanostructures. The optimized Pt53-on-NiCo nanostructures show higher activities in both the onset potential and kinetic current density toward the ORR relative to the commercial Pt reference catalysts because the Pt-on-NiCo catalyst could lower the OHad, which is considered to inhibit the ORR toward water. Meanwhile, Pt-on-NiCo nanostructures exhibit relatively long-term stability with only ~8% loss in electrochemical surface area (ECSA) for Pt.http://dx.doi.org/10.1155/2012/842048 |
| spellingShingle | Qiang Qu Ming Wen Mingzhu Cheng Anwei Zhu Biao Kong Yang Tian One-Step Synthesized Pt-on-NiCo Nanostructures for Oxygen Reduction with High Activity and Long-Term Stability International Journal of Electrochemistry |
| title | One-Step Synthesized Pt-on-NiCo Nanostructures for Oxygen Reduction with High Activity and Long-Term Stability |
| title_full | One-Step Synthesized Pt-on-NiCo Nanostructures for Oxygen Reduction with High Activity and Long-Term Stability |
| title_fullStr | One-Step Synthesized Pt-on-NiCo Nanostructures for Oxygen Reduction with High Activity and Long-Term Stability |
| title_full_unstemmed | One-Step Synthesized Pt-on-NiCo Nanostructures for Oxygen Reduction with High Activity and Long-Term Stability |
| title_short | One-Step Synthesized Pt-on-NiCo Nanostructures for Oxygen Reduction with High Activity and Long-Term Stability |
| title_sort | one step synthesized pt on nico nanostructures for oxygen reduction with high activity and long term stability |
| url | http://dx.doi.org/10.1155/2012/842048 |
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