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Biomass-derived nitrogen self-doped porous carbon as effective metal-free catalysts for oxygen reduction reaction.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Liu, Xiaojun Zhou, Yucheng Zhou, Weijia Li, Ligui Huang, Shaobin Chen, Shaowei |
| Copyright Year | 2015 |
| Abstract | Biomass-derived nitrogen self-doped porous carbon was synthesized by a facile procedure based on simple pyrolysis of water hyacinth (eichhornia crassipes) at controlled temperatures (600-800 °C) with ZnCl2 as an activation reagent. The obtained porous carbon exhibited a BET surface area up to 950.6 m(2) g(-1), and various forms of nitrogen (pyridinic, pyrrolic and graphitic) were found to be incorporated into the carbon molecular skeleton. Electrochemical measurements showed that the nitrogen self-doped carbons possessed a high electrocatalytic activity for ORR in alkaline media that was highly comparable to that of commercial 20% Pt/C catalysts. Experimentally, the best performance was identified with the sample prepared at 700 °C, with the onset potential at ca. +0.98 V vs. RHE, that possessed the highest concentrations of pyridinic and graphitic nitrogens among the series. Moreover, the porous carbon catalysts showed excellent long-term stability and much enhanced methanol tolerance, as compared to commercial Pt/C. The performance was also markedly better than or at least comparable to the leading results in the literature based on biomass-derived carbon catalysts for ORR. The results suggested a promising route based on economical and sustainable biomass towards the development and engineering of value-added carbon materials as effective metal-free cathode catalysts for alkaline fuel cells. |
| File Format | PDF HTM / HTML |
| DOI | 10.1039/c5nr00013k |
| PubMed reference number | 25772220 |
| Journal | Medline |
| Volume Number | 7 |
| Issue Number | 14 |
| Alternate Webpage(s) | http://chen.chemistry.ucsc.edu/c5nr00013k.pdf |
| Alternate Webpage(s) | http://www.rsc.org/suppdata/c5/nr/c5nr00013k/c5nr00013k1.pdf |
| Alternate Webpage(s) | https://doi.org/10.1039/c5nr00013k |
| Journal | Nanoscale |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
