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March 15, 2026Advanced Composites and Hybrid MaterialsOpen Access

Bioderived FeNi encapsulated N-doped carbon nanotubes for high-performance ORR/OER bifunctional catalysis

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Authors

FLFan LiPTPengyu TanDLDegui Li

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Overview

Demonstrates FeNi nanoalloys encased in N-doped carbon nanotubes, showing promising oxygen reduction and evolution reactions for energy storage applications.

Key Points

  • To develop a sustainable method for producing bifunctional catalysts using biowaste from shrimp shells.
  • Sintering amino acids, FeCl3, NiCl2, and melamine at 900 ℃ in nitrogen atmosphere to create FeNi nanoalloys encapsulated within N-doped carbon nanotubes.
  • Evaluating ORR and OER activity in alkaline media and comparing with commercial catalysts.
  • Testing performance in zinc-air batteries both in aqueous and flexible formats.
  • 3FeNi-NCNTs achieved competitive limiting current density in ORR compared to commercial 20% Pt/C with onset potential of 0.98 V.
  • OER performance rivaled RuO2 with a low overpotential of 0.76 V.
  • Zinc-air batteries using 3FeNi-NCNTs reached a peak power density of 173.6 mW cm-2 and specific capacity of 809.9 mAh g-1.
  • Flexible zinc-air batteries showed long cycle life of 140 hours, outperforming Pt/RuO2-based batteries.

Cite This Study

Li et al. (2026) studied this question.

synapsesocial.com/papers/69b64c33b42794e3e660da57https://doi.org/10.1007/s42114-026-01741-7
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