Single-layer carbon-coated FeCo alloy nanoparticles embedded in single-walled carbon nanotubes for high oxygen electrocatalysis

Dengyu Xie; Yu Chen; Deshuang Yu; Silin Han; Junnan Song; Yaoyi Xie; Feng Hu; Linlin Li; Shengjie Peng

doi:10.1039/d0cc00229a

Single-layer carbon-coated FeCo alloy nanoparticles embedded in single-walled carbon nanotubes for high oxygen electrocatalysis

Chem Commun (Camb). 2020 Jun 23;56(50):6842-6845. doi: 10.1039/d0cc00229a.

Authors

Dengyu Xie¹, Yu Chen¹, Deshuang Yu¹, Silin Han¹, Junnan Song¹, Yaoyi Xie¹, Feng Hu¹, Linlin Li¹, Shengjie Peng¹

Affiliation

¹ Jiangsu Key Laboratory of Materials and Technology for Energy Conversion, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P. R. China. pengshengjie@nuaa.edu.cn.

PMID: 32432255
DOI: 10.1039/d0cc00229a

Abstract

Herein, novel and durable single-layer carbon-coated FeCo alloy nanoparticles embedded in single-walled carbon nanotubes (FeCo/SWCNTs) are rationally synthesized using a facile one-step route by aerosol-assisted floating catalyst chemical vapor deposition (CCVD). The as-synthesized unique FeCo/SWCNT catalyst exhibits remarkable oxygen electrocatalysis performance, especially oxygen evolution reaction activity and superior stability owing to the efficient synergistic effect between FeCo alloy and single-layer carbon regarding the electronic interaction and surface protection, achieving an overpotential (η) of 253 mV at 10 mA cm-2 and a Tafel slope of 44 mV dec-1 in 1.0 M KOH solution while presenting outstanding stability after being tested for 50 hours. Such high oxygen electrocatalysis performance advances realistic renewable zinc-air batteries with high efficiency as well.