Platinum-rhodium alloyed dendritic nanoassemblies: An all-pH efficient and stable electrocatalyst for hydrogen evolution reaction
| Autor: | Zhu Han, Jiu-Ju Feng, Ai-Jun Wang, Jiao-Jiao Duan, Hong Huang, Ru-Lan Zhang, Qian-Li Zhang |
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| Rok vydání: | 2020 |
| Předmět: |
Chemical substance
Materials science Hydrogen Renewable Energy Sustainability and the Environment Energy Engineering and Power Technology chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Electrocatalyst 01 natural sciences 0104 chemical sciences Rhodium Catalysis chemistry.chemical_compound Fuel Technology chemistry Chemical engineering Oleylamine 0210 nano-technology Platinum Bimetallic strip |
| Zdroj: | International Journal of Hydrogen Energy. 45:6110-6119 |
| ISSN: | 0360-3199 |
| Popis: | Hydrogen evolution reaction (HER) is regarded as a feasible strategy for producing high-purity hydrogen from abundant water. It is significant yet challenging for synthesis of Pt-based pH-universal HER electrocatalysts by substantially reducing the Pt loading without any decay in the activity. Herein, bimetallic PtRh alloyed dendritic nanoassemblies (DNAs) were efficiently prepared by a facile one-pot solvothermal strategy in oleylamine (OAm), coupling with the aid of glycine and cetyltrimethylammonium chloride (CTAC). By virtue of the unique branch-like structures and compositions advantages, the PtRh DNAs catalyst showed steeply enhanced HER activity with small overpotentials (i.e. 28 mV in 1.0 M KOH, 23 mV in 1.0 M phosphate buffer solution and 27 mV in 0.5 M H2SO4) at the current density of 10 mA cm−2, surpassing those of commercial Pt/C under such conditions. This work provides a facile and rational strategy to construct advanced Pt-based bimetallic electrocatalyst for energy-correlated applications. |
| Databáze: | OpenAIRE |
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