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Nano Research 2019, 12(12): 2954-2959 https://doi.org/10.1007/s12274-019-2537-y
Research Article | Issue | Published: 24 October 2019

Direct synthesis of L10-FePt nanoparticles from single-source bimetallic complex and their electrocatalytic applications in oxygen reduction and hydrogen evolution reactions

Show Author's Information Zhengong Meng1,§,  Fei Xiao2,§,  Zhuoxun Wei1,  Xuyun Guo3,  Ye Zhu3,  Yurong Liu1,  Guijun Li4,  Zhen-Qiang Yu1( ),  Minhua Shao2( ),  Wai-Yeung Wong5,6( )
College of Chemistry and Environmental Engineering and Institute of Low-dimensional Materials Genome InitiativeShenzhen UniversityShenzhen518060China
Department of Chemical and Biological EngineeringHong Kong University of Science and TechnologyClear Water BayKowloon999077Hong Kong, China
Department of Applied Biology and Chemical TechnologyThe Hong Kong Polytechnic UniversityHung Hom, Hong KongChina
Department of Applied PhysicsThe Hong Kong Polytechnic UniversityHung Hom, Hong KongChina
State Key Laboratory of Ultra-precision Machining TechnologyDepartment of Industrial and Systems EngineeringThe Hong Kong Polytechnic UniversityHung Hom, Hong KongChina
The Hong Kong Polytechnic University Shenzhen Research InstituteShenzhen518057China

§ Zhengong Meng and Fei Xiao contributed equally to this work.

Keywords:
oxygen reduction reaction, single-source precursor, hydrogen evolution reaction, bimetallic complex, FePt nanoparticle
Topics:
Binary alloysChlorine compoundsCrystallinityElectrocatalystsElectrolytesElectrolytic reduction Fuel cellsHydrogenNanoparticlesOrganometallicsOxygenPlatinum compoundsSynthesis (chemical)
Cite this article:
Meng Z, Xiao F, Wei Z, et al. Direct synthesis of L10-FePt nanoparticles from single-source bimetallic complex and their electrocatalytic applications in oxygen reduction and hydrogen evolution reactions. Nano Research, 2019, 12(12): 2954-2959. https://doi.org/10.1007/s12274-019-2537-y
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Abstract Full text Electronic supplementary material About this article

L10-FePt nanoparticles (NPs) with high chemical ordering represent effective electrocatalysts to reduce the cost and enhance their catalytic performance in fuel cells. A molecular strategy of preparing highly ordered FePt NPs was used by direct pyrolysis of a Fe, Pt-containing bimetallic complex. The resultant L10-FePt NPs had very high crystallinity as reflected by the obvious diffraction patterns, clear lattice fringes and characteristic X-ray diffraction peaks, etc. Besides, the strong ferromagnetism with room temperature coercivity of 27 kOe further confirmed the face-centered tetragonal (fct) phase in good agreement with the ordered nanostructures. The FePt NPs can be used as electrocatalysts to catalyze oxygen reduction reaction (ORR) in an O2-saturated 0.1 M HClO4 solution and hydrogen evolution reaction (HER) in the 0.5 M H2SO4 electrolyte with much better performance than commercial Pt/C, and showed quite high stability after 10, 000 cycles. The strategy utilizing organometallic precursors to prepare metal alloy NPs was demonstrated to be a reliable approach for improving the catalytic efficiency in fuel cells.


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Electronic supplementary material
About this article

Direct synthesis of L10-FePt nanoparticles from single-source bimetallic complex and their electrocatalytic applications in oxygen reduction and hydrogen evolution reactions

Show Author's information Zhengong Meng1,§, Fei Xiao2,§, Zhuoxun Wei1, Xuyun Guo3, Ye Zhu3, Yurong Liu1, Guijun Li4, Zhen-Qiang Yu1( ), Minhua Shao2( ), Wai-Yeung Wong5,6( )
College of Chemistry and Environmental Engineering and Institute of Low-dimensional Materials Genome InitiativeShenzhen UniversityShenzhen518060China
Department of Chemical and Biological EngineeringHong Kong University of Science and TechnologyClear Water BayKowloon999077Hong Kong, China
Department of Applied Biology and Chemical TechnologyThe Hong Kong Polytechnic UniversityHung Hom, Hong KongChina
Department of Applied PhysicsThe Hong Kong Polytechnic UniversityHung Hom, Hong KongChina
State Key Laboratory of Ultra-precision Machining TechnologyDepartment of Industrial and Systems EngineeringThe Hong Kong Polytechnic UniversityHung Hom, Hong KongChina
The Hong Kong Polytechnic University Shenzhen Research InstituteShenzhen518057China

§ Zhengong Meng and Fei Xiao contributed equally to this work.

Abstract

L10-FePt nanoparticles (NPs) with high chemical ordering represent effective electrocatalysts to reduce the cost and enhance their catalytic performance in fuel cells. A molecular strategy of preparing highly ordered FePt NPs was used by direct pyrolysis of a Fe, Pt-containing bimetallic complex. The resultant L10-FePt NPs had very high crystallinity as reflected by the obvious diffraction patterns, clear lattice fringes and characteristic X-ray diffraction peaks, etc. Besides, the strong ferromagnetism with room temperature coercivity of 27 kOe further confirmed the face-centered tetragonal (fct) phase in good agreement with the ordered nanostructures. The FePt NPs can be used as electrocatalysts to catalyze oxygen reduction reaction (ORR) in an O2-saturated 0.1 M HClO4 solution and hydrogen evolution reaction (HER) in the 0.5 M H2SO4 electrolyte with much better performance than commercial Pt/C, and showed quite high stability after 10, 000 cycles. The strategy utilizing organometallic precursors to prepare metal alloy NPs was demonstrated to be a reliable approach for improving the catalytic efficiency in fuel cells.

Keywords: oxygen reduction reaction, single-source precursor, hydrogen evolution reaction, bimetallic complex, FePt nanoparticle

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Publication history
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Acknowledgements

Publication history

Received: 29 July 2019
Revised: 20 September 2019
Accepted: 07 October 2019
Published: 24 October 2019
Issue date: December 2019

Copyright

© Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Acknowledgements

Acknowledgements

This work was supported by the National Natural Science Foundation of China (No. 21701112), Hong Kong Research Grants Council (PolyU153062/18P, C4006-17G and HKUST16304117), the Hong Kong Polytechnic University (1-ZE1C) and Ms Clarea Au (847S) for the Endowed Professorship in Energy. Special thanks were also given to Instrumental Analysis Center of Shenzhen University (Xili Campus).

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