Interface Engineering of Ni3N@Fe3N Heterostructure Supported on Carbon Fiber for Enhanced Water Oxidation

Huawei Huang, Chang Yu, Xiaotong Han, Shaofeng Li, Song Cui, Changtai Zhao, Hongling Huang, Jieshan Qiu

Research output: Contribution to journalArticlepeer-review

34 Scopus citations


Oxygen-evolution reaction (OER), a kinetically sluggish half-reaction involved in water splitting, generally needs large overpotentials to drive the catalytic process, leading to relatively low energy conversion efficiency. Therefore, the development of efficient, low-cost, and stable electrocatalysts based on earth abundant elements is highly desired. Herein, we develop a novel method to construct Ni3N@Fe3N heterostructure anchored on carbon fiber (Ni3N@Fe3N/CF-6) consisting of Fe3N nanoparticles grafted on the metallic Ni3N nanosheets. The results show that of the as-synthesized electrocatalysts, the Ni3N@Fe3N/CF-6 features abundantly exposed interface and active sites, as well as open structure for intimate contact of electrolyte ions and easy release of generated gas. Hence, this Ni3N@Fe3N/CF-6 exhibits a great enhanced OER electrocatalytic performance, including overpotentials as low as 294 mV to achieve a current density of 10 mA cm-2, a small Tafel slope of 40 mV dec-1, and a superior stability at a large current density.
Original languageEnglish (US)
Pages (from-to)14245-14251
Number of pages7
JournalIndustrial and Engineering Chemistry Research
Issue number48
StatePublished - Dec 6 2017
Externally publishedYes

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)
  • Industrial and Manufacturing Engineering


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