Pt CoN supported on TiN-modified carbon nanotubes (Pt CoN/TiN–CNT) as efficient oxygen reduction reaction catalysts in acidic medium
| Autor: | Jiahai Wang, Shengzhou Chen, Qiuchan Huang, Hanbo Zou, Huangwang Mai, Wei Yang |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment Energy Engineering and Power Technology Nanoparticle chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Electrochemistry 01 natural sciences 0104 chemical sciences Catalysis Metal chemistry.chemical_compound Fuel Technology Chemical engineering Polymerization chemistry visual_art Electrode visual_art.visual_art_medium Methanol 0210 nano-technology Tin |
| Zdroj: | International Journal of Hydrogen Energy. 43:14337-14346 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2018.06.003 |
| Popis: | Herein, new catalysts for the oxygen reduction reaction (ORR) (Pt CoN nanoparticles supported on TiN–carbon nanotubes (CNTs)) were successfully prepared via the simple polymerized complex method and heat treatment in NH3. Through this facile two-step synthesis, metal chlorides were first transformed to the corresponding oxides, then reduced to metal particles or nitrides. The synthesized Pt CoN/TiN–CNT electrocatalysts showed excellent electrochemical activity for oxygen reduction and high tolerance against methanol in acidic medium. The ORR onset potential of Pt0.3CoN/TiN–CNT (0.812 V vs. RHE) is higher than that of 40 wt% commercial Pt/C (0.789 V vs. RHE) due to the synergistic effect between nano-platinum particles and metal nitrides. The TiN-coated CNT support provided high electron transfer rate and catalytic tolerance in methanol solution. The number of transferred electrons was examined by rotating ring-disk electrode measurements, which concurred with the result of the Koutecky–Levich equation for a four-electron mechanism. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect