Biomimicry-inspired fish scale-like Ni3N/FeNi3N/NF superhydrophilic/superaerophobic nanoarrays displaying high electrocatalytic performance

Yucheng Dong, Yutai Wu, Xuyun Wang, Hui Wang, Jianwei Ren, Peng Wang, Lei Pan, Guoqiang Wang, Rongfang Wang

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

The mass transfer efficiency and structural stability of the electrode are critical for industrialized water electrolysis operations. Herein, the biomimicry-inspired design of Ni3N/FeNi3N/NF nanoarrays with a fish scale-like structure, which endowed the Ni3N/FeNi3N/NF nanoarrays with rapid infiltration of aqueous solution within 60 ms and 169° bubble contact angle, is demonstrated. The optimal Ni3N/FeNi3N/NF sample displayed catalytic activity with hydrogen evolution reaction (HER) overpotentials of only 48 mV at 10 mA cm−2 and 102 mV at 100 mA cm−2. Similarly, the overpotential of the anodic-coupled urea oxidation reaction (UOR) was only 1.3 V at 10 mA cm−2 and 1.35 V at 100 mA cm−2. Besides, the small impact resulting from the rapid bubble extraction within the Ni3N/FeNi3N/NF nanoarrays ensured excellent HER cycling stability over 100 h at a current density of 50 mA cm−2. The further scale-up experiment suggests the industrialization prospects of the prepared Ni3N/FeNi3N/NF electrocatalysts.

Original languageEnglish
Pages (from-to)1813-1823
Number of pages11
JournalNanoscale
Volume15
Issue number4
DOIs
Publication statusPublished - 19 Dec 2022

ASJC Scopus subject areas

  • General Materials Science

Fingerprint

Dive into the research topics of 'Biomimicry-inspired fish scale-like Ni3N/FeNi3N/NF superhydrophilic/superaerophobic nanoarrays displaying high electrocatalytic performance'. Together they form a unique fingerprint.

Cite this