Soybean milk derived carbon intercalated with reduced graphene oxide as high efficient electrocatalysts for oxygen reduction reaction
Exploring high-performance and low-cost metal-free oxygen reduction reaction (ORR) catalysts from biomass-derived materials is vital to the development of novel energy conversion devices such as fuel cells, etc. Herein, nitrogen-enriched soybean milk derived carbon (BDC/rGO-HT-NH3) intercalated with...
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Published in | International journal of hydrogen energy Vol. 44; no. 39; pp. 21790 - 21802 |
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Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Elsevier Ltd
13.08.2019
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Subjects | |
Online Access | Get full text |
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Summary: | Exploring high-performance and low-cost metal-free oxygen reduction reaction (ORR) catalysts from biomass-derived materials is vital to the development of novel energy conversion devices such as fuel cells, etc. Herein, nitrogen-enriched soybean milk derived carbon (BDC/rGO-HT-NH3) intercalated with reduced graphene oxide (rGO) electrocatalyst is prepared via one-pot hydrothermal synthesis method followed with nitridation by NH3. The resultant catalyst with high surface area, good conductivity and high content of N (9.4 at.%) shows high electrocatalytic activity towards ORR in alkaline medium, which mainly happens through the direct 4-electron pathway. The onset potential of BDC/rGO-HT-NH3 catalyzed ORR is 0.96 V vs RHE, which is only 0.11 V lower than that of the commercial Pt/C (20 wt%) catalyst. In addition, the BDC/rGO-HT-NH3 catalyst shows superior long-term running durability. The desirable catalytic performances enable the facile synthesis approach of BDC/rGO-HT-NH3 to be a promising methodology for transforming other biomass materials to N-enriched carbon based materials as low-cost and environmental friendly catalysts for ORR.
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•N-doped soybean milk derived carbon based oxygen reduction catalyst is prepared.•The intercalated rGO improved the catalytic activity of the derived carbon for ORR.•NH3 treated carbon has abundant micropores and pyridinic- and graphitic-N groups.•BDC/rGO-HT-NH3 catalyst with surface area of 294 m2 g−1 and 9.4 at.% N content.•BDC/rGO-HT-NH3 catalyst exhibits excellent activity and stability towards ORR. |
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ISSN: | 0360-3199 1879-3487 |
DOI: | 10.1016/j.ijhydene.2019.06.174 |