Journal
NANO ENERGY
Volume 13, Issue -, Pages 387-396Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nanoen.2015.02.025
Keywords
Encapsulated iron nanoparticles; Nitrogen-doped carbon nanoshell; Oxygen etectrocatalysis; Oxygen reduction reaction; Oxygen evolution reaction; Zinc-air battery
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Funding
- Ministry of Science and Technology of China [2012CB215500, 2013CB933100]
- National Natural Science Foundation of China [21103178]
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Exploring highly efficient electrocatalysts toward oxygen reduction and evolution reactions are critical for the development of rechargeable zinc air batteries. As a novel class of electrocatalyst, transition metal nanoparticles encapsulated within nitrogen-doped carbon have been regarded as competitive alternative to replace noble metal electrocatalysts. Herein, we report successful synthesis of high-density iron nanoparticles encapsulated within nitrogen-doped carbon nanoshell (Fe@N-C) by solid-phase precursor's pyrolysis of dicyandiamide and ammonium ferric citrate. The resulting Fe@N-C material shows excellent bifunctionality for ORR and OER in alkaline medium compared to state-of-the-art commercial Pt/C and IrO2, which demonstrates high performance and cycling durability in zinc air battery as efficient oxygen electrocatalyst. (C) 2015 Published by Elsevier Ltd.
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