Rapeseed meal-based autochthonous N and S-doped non-metallic porous carbon electrode material for oxygen reduction reaction catalysis
| Autor: | Zefan Yang, Lihua Zhou, Renlian Chen, Zhang Baofang, Yingxin Chen, Yong Yuan |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Heteroatom Energy Engineering and Power Technology 02 engineering and technology 010402 general chemistry 01 natural sciences law.invention Catalysis Metal chemistry.chemical_compound law Diffusion current Renewable Energy Sustainability and the Environment Carbonization Doping 021001 nanoscience & nanotechnology Condensed Matter Physics Cathode 0104 chemical sciences Fuel Technology chemistry Chemical engineering visual_art visual_art.visual_art_medium Methanol 0210 nano-technology |
| Zdroj: | International Journal of Hydrogen Energy. 46:508-517 |
| ISSN: | 0360-3199 |
| Popis: | The heteroatom-doped porous carbon material as an alternative to commercial Pt/C catalysts in oxygen reduction reaction has attracted extensive attention. In this study, the rapeseed meal-based material (ARM-900) prepared by carbonization with high temperature and activation with ZnCl2 had a porous structure and was doped with N and S heteroatoms. Compared to commercial Pt/C catalysts (onset potential of 0.95 V vs. RHE and limiting diffusion current of −5.7 mA cm−2), ARM-900 demonstrated excellent electrocatalytic performance with an onset potential of 0.98 V vs. RHE and limiting diffusion current of −8.1 mA cm−2 in O2 saturated 0.1 M KOH solution. Meanwhile, ARM-900 had higher durability and more superior methanol tolerance than Pt/C catalyst. The excellent ORR performance of ARM-900 was derived from the formation of abundant pore structure and the doping of the autochthonous N and S heteroatoms. MFCs with ARM-900 as the cathode had the maximum power density of 808 mW/m2, which was obviously better than Pt/C (709 mW/m2). This study provided an environment-friendly and effective strategy for the reuse of rapeseed meal and the preparation of N and S-doped non-metallic ORR catalysts. |
| Databáze: | OpenAIRE |
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