Biomass-derived nitrogen and boron dual-doped hollow carbon tube as cost-effective and stable synergistic catalyst for oxygen electroreduction
| Autor: | Qiran Zhai, Jianquan Shen, Liling Wei, Gang Wang, Chun Cao |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
General Chemical Engineering
Inorganic chemistry Doping chemistry.chemical_element Biomass 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Nitrogen Oxygen 0104 chemical sciences Catalysis chemistry 0210 nano-technology Boron Carbon |
| Zdroj: | Electrochimica Acta. 249:328-336 |
| ISSN: | 0013-4686 |
| DOI: | 10.1016/j.electacta.2017.08.025 |
| Popis: | Low-cost and highly active catalysts for oxygen reduction reaction (ORR) were of great importance to the development of fuel cell. Herein, we presented a novel N/B co-doped carbon as cost-effective and stable ORR catalyst from renewable biomass. The as-prepared carbon showed an interesting hollow tube morphology that derived from its precursor. The N/B co-doped sample (NB-HCT) possessed bigger electrochemical active area (296.4 m 2 g −1 ), and also contained much more ORR active-N/B species than those of single N or B doped carbon. Notability, the on-set potential and half-wave potential of NB-HCT were 0.929 V (vs. RHE) and 0.810 V (vs. RHE), respectively, which were much more positive than others and even comparable to Pt/C, revealing it had distinct ORR activity. Remarkably, the superior ORR activity of NB-HCT could be mainly ascribed to the synergistic effect of ORR active-N and B-C, which might result in the possible formation of high-active B-C-N nanostructure. Therefore, NB-HCT should be one of promising ORR catalysts to alternative precious Pt/C and promote the development of fuel cell. |
| Databáze: | OpenAIRE |
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