Restricting Growth of Ni 3 Fe Nanoparticles on Heteroatom-Doped Carbon Nanotube/Graphene Nanosheets as Air-Electrode Electrocatalyst for Zn-Air Battery

Chenglong Lai, Jie Wang, Wen Lei, Cuijuan Xuan, Weiping Xiao, Tonghui Zhao, Ting Huang, Lingxuan Chen, Ye Zhu, Deli Wang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

49 Citations (Scopus)

Abstract

Exploring bifunctional oxygen electrode catalysts with efficient and stable oxygen reduction reaction (ORR)/oxygen evolution reaction (OER) performance is one of the limitations for high-performance zinc-air battery. In this work, Ni 3 Fe alloy nanoparticles incorporated in three-dimensional (3D) carbon nanotube (CNT)/graphene nanosheet composites with N and S codoping (Ni 3 Fe/N-S-CNTs) as bifunctional oxygen electrode electrocatalysts for zinc-air battery. The main particle size of Ni 3 Fe nanoparticles could be well restricted because of the unique 3D structure of carbon nanotube/graphene nanosheet composites (N-S-CNTs). The large specific area of N-S-CNTs is conducive to the uniform dispersion of Ni 3 Fe nanoparticles. On the basis of the synergistic effect of Ni 3 Fe nanoparticles with N-S-CNTs, and the sufficient exposure of reactive sites, the synthesized Ni 3 Fe/N-S-CNTs catalyst exhibits excellent OER performance with a low overpotential of 215 mV at 10 mA cm -2 , and efficient ORR activity with a half-wave potential of 0.877 V. When used as an electrocatalyst in zinc-air battery, the device exhibits a power density of 180.0 mW cm -2 and long term durability for 500 h.

Original languageEnglish
Pages (from-to)38093-38100
Number of pages8
JournalACS Applied Materials and Interfaces
Volume10
Issue number44
DOIs
Publication statusPublished - 7 Nov 2018

Keywords

  • bifunctional electrocatalyst
  • heteroatom-doped carbon material
  • NiFe-based
  • synergistic effects
  • Zn-air battery

ASJC Scopus subject areas

  • Materials Science(all)

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