DOI: 10.1002/anie.201400358. Hollow Spheres of Iron Carbide Nanoparticles Encased in Graphitic Layers as Oxygen Reduction Catalysts

Hollow Spheres of Iron Carbide Nanoparticles Encased in Graphitic Layers as Oxygen Reduction Catalysts

10.1002/anie.201400358

Crossref journal-article

Wiley

Angewandte Chemie International Edition (311)

Abstract

AbstractNonprecious metal catalysts for the oxygen reduction reaction are the ultimate materials and the foremost subject for low‐temperature fuel cells. A novel type of catalysts prepared by high‐pressure pyrolysis is reported. The catalyst is featured by hollow spherical morphologies consisting of uniform iron carbide (Fe3C) nanoparticles encased by graphitic layers, with little surface nitrogen or metallic functionalities. In acidic media the outer graphitic layers stabilize the carbide nanoparticles without depriving them of their catalytic activity towards the oxygen reduction reaction (ORR). As a result the catalyst is highly active and stable in both acid and alkaline electrolytes. The synthetic approach, the carbide‐based catalyst, the structure of the catalysts, and the proposed mechanism open new avenues for the development of ORR catalysts.

Bibliography

Hu, Y., Jensen, J. O., Zhang, W., Cleemann, L. N., Xing, W., Bjerrum, N. J., & Li, Q. (2014). Hollow Spheres of Iron Carbide Nanoparticles Encased in Graphitic Layers as Oxygen Reduction Catalysts. Angewandte Chemie International Edition, 53(14), 3675â3679. Portico.

Authors 7

Yang Hu (first)
Jens Oluf Jensen (additional)
Wei Zhang (additional)
Lars N. Cleemann (additional)
Wei Xing (additional)
Niels J. Bjerrum (additional)
Qingfeng Li (additional)

References 49 Referenced 833

Dates

Type	When
Created	11 years, 6 months ago (Feb. 19, 2014, 10:14 p.m.)
Deposited	1 year, 10 months ago (Oct. 16, 2023, 1 p.m.)
Indexed	2 days, 5 hours ago (Aug. 23, 2025, 1:10 a.m.)
Issued	11 years, 6 months ago (Feb. 19, 2014)
Published	11 years, 6 months ago (Feb. 19, 2014)
Published Online	11 years, 6 months ago (Feb. 19, 2014)
Published Print	11 years, 4 months ago (April 1, 2014)

Funders 0

None

BibTeX

@article{Hu_2014, title={Hollow Spheres of Iron Carbide Nanoparticles Encased in Graphitic Layers as Oxygen Reduction Catalysts}, volume={53}, ISSN={1521-3773}, url={http://dx.doi.org/10.1002/anie.201400358}, DOI={10.1002/anie.201400358}, number={14}, journal={Angewandte Chemie International Edition}, publisher={Wiley}, author={Hu, Yang and Jensen, Jens Oluf and Zhang, Wei and Cleemann, Lars N. and Xing, Wei and Bjerrum, Niels J. and Li, Qingfeng}, year={2014}, month=feb, pages={3675–3679} }

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