Facile Fabrication of Bimetallic PtCo Nanoparticles Supported on Three-Dimensional Reduced Graphene Oxide by Ultrasonic-Assisted Method for Oxygen Reduction Reaction

Abstract:

High platinum requirements in electrocatalyst bring about huge expenditure, which hinders the commercialization and wide adoption of proton electrolyte membrane fuel cells (PEMFCs). Therefore, developing new fuel cell catalysts with excellent oxygen reduction reaction (ORR) performance may be a potential way to solve this drawback. In this paper, a facile ultrasonic-assisted method is introduced to synthesize bimetallic PtCo nanoparticles supported on three-dimensional reduced graphene oxide (Pt-Co/3DrGO). Results indicate that PtCo nanoparticles with alloy structure, small size (12.4 nm), and uniform distribution are well-dispersed onto rGO sheets. With 3D porous structure, the fabricated Pt-Co/3DrGO catalyst exhibits better ORR activity and long-term stability than that of commercial Pt/C (20 wt%). The increased electrocatalytic activity is attributed to the formation of 3D porous structure together with the effective surface structure and the highly uniform distribution of the PtCo alloy nanoparticles on rGO sheets.

• Periodical: Key Engineering Materials (Volume 727)
• Pages: 322-326
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.727.322
• Online since: January 2017
• Authors: Yi Li, Juan Yang, Kai Xu
• Keywords: Oxygen Reduction Reaction, PEMFCs, Pt-Co/3DrGO Catalyst

References

[1] N. Jung, D.Y. Chung, J. Ryu, S.J. Yoo, Y. Sung, Pt-based nanoarchitecture and catalyst design for fuel cell applications, Nano Today 9 (2014) 433-456.

DOI: 10.1016/j.nantod.2014.06.006

[2] M. Shao, Q. Chang, J. Dodelet, R. Chenitz, Recent advances in electrocatalysts for oxygen reduction reaction, Chem. Rev. 116 (2016) 3594-3657.

DOI: 10.1021/acs.chemrev.5b00462

[3] L. Bu, S. Guo, X. Zhang, X. Shen, D. Su, G. Lu, X. Zhu, J. Yao, J. Guo, X. Huang, Surface engineering of hierarchical platinum-cobalt nanowires for efficient electrocatalysis, Nat. Commun. 7 (2016) 1-10.

DOI: 10.1038/ncomms11850

[4] H. Gao, H. Duan, 2D and 3D graphene materials: preparation and bioelectrochemical applications, Biosens. Bioelectron. 65 (2015) 404-419.

DOI: 10.1016/j.bios.2014.10.067

[5] Y. Zhou, G. Yang, H. Pan, C. Zhu, S. Fu, Q. Shi, D. Du, X. Cheng, J. Yang, C.M. Wai, Y. Lin, Ultrasonic-assisted synthesis of carbon nanotube supported bimetallic Pt–Ru nanoparticles for effective methanol oxidation, J. Mater. Chem. A 3 (2015).

DOI: 10.1039/c5ta00695c

[6] Y. Li, J. Yang, Y. Zhou, T. Zhong, S. Zheng, W. Zeng, Facile synthesis of gold nanoparticles-graphene oxide films and their excellent surface-enhanced Raman scattering activity, Monatsh. Chem. 147 (2016) 677-683.

DOI: 10.1007/s00706-015-1576-7

[7] Y. Zhou, C.H. Yen, S. Fu, G. Yang, C. Zhu, D. Du, P.C. Wo, X. Cheng, J. Yang, C.M. Wai, Y. Lin, One-pot synthesis of B-doped three-dimensional reduced graphene oxide via supercritical fluid for oxygen reduction reaction, Green Chem. 17 (2015).

DOI: 10.1039/c5gc00617a