One-pot synthesis of Pd@PtNi core-shell nanoflowers supported on the multi-walled carbon nanotubes with boosting activity toward oxygen reduction in alkaline electrolyte
| Autor: | Zhenglong Qin, Mengli Li, Guoxiang Wang, Zhouyang Long, Fangmin Huang, Ping Zhu, Wenjie Lv, Yan Wang, Sa Liu, Liwen Liu, Xinsheng Zhao |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment Inorganic chemistry One-pot synthesis Energy Engineering and Power Technology 02 engineering and technology Carbon nanotube Electrolyte Nanoflower 010402 general chemistry 021001 nanoscience & nanotechnology Ascorbic acid 01 natural sciences 0104 chemical sciences law.invention Catalysis Chemical engineering Nanocrystal law Electrical and Electronic Engineering Physical and Theoretical Chemistry 0210 nano-technology Porosity |
| Zdroj: | Journal of Power Sources. 365:26-33 |
| ISSN: | 0378-7753 |
| DOI: | 10.1016/j.jpowsour.2017.08.073 |
| Popis: | Pt-based nanocrystals with controlled morphologies and structures are one of most promising electrocatalysts for oxygen reduction reaction (ORR). Herein, a facile one-pot wet-chemical method is developed to synthesize Pd@PtNi core-shell nanoflowers (CSNFs) supported on the multi-walled carbon nanotubes (MWNCTs). Brij 58 is demonstrated as a structure-directing agent to generate the nanoflower and ascorbic acid acts as a reductant to form a core-shell structure. By tuning the molar ratio of Pd and Pt, Pd@PtNi/MWCNTs CSNFs show obviously improved ORR activity and durability in alkaline electrolyte compared with PtNi/MWCNTs nanoflowers and commercial Pt/C. The results illustrate that the core-shell structure and porous feature of nanoflower are both beneficial to the enhancement of the catalytic properties. |
| Databáze: | OpenAIRE |
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