@article{Zhang:2024:10.1021/acsaem.4c00660,
author = {Zhang, W and Liu, C and Kucernak, A and Liu, H and Wu, J and Li, S},
doi = {10.1021/acsaem.4c00660},
journal = {ACS Applied Energy Materials},
pages = {5398--5407},
title = {Synergizing single-atom and carbon-encapsulated nanoparticles of Fe for efficient oxygen reduction and durable Zn-air batteries},
url = {http://dx.doi.org/10.1021/acsaem.4c00660},
volume = {7},
year = {2024}
}

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TY  - JOUR
AB  - Overcoming the sluggish kinetics of the oxygen reduction reaction (ORR) remains a critical challenge for Zn–air batteries. Fe–N/C catalysts have emerged as promising alternatives to precious Pt-based materials. Herein, we report the design and synthesis of carbon-encapsulated Fe nanoparticles decorated Fe–N/C (denoted as FeNPs@Fe–N/C) via controlled pyrolysis. The FeNPs@Fe–N/C catalyst exhibits excellent ORR performance in alkaline media with a half-wave potential (E1/2) of 0.893 VRHE. The strategic integration of carbon-encapsulated Fe nanoparticles substantially improves the catalytic activity of Fe–N/C catalysts. The FeNPs@Fe–N/C as the Zn–air battery cathode delivers an impressive peak power density of 175.7 mW cm–2 and excellent stability over 500 h, surpassing the Pt/C benchmarks. Density functional theory calculations reveal that the carbon-encapsulated Fe nanoparticles facilitate electron transfer to the catalytic site by modulating the d-band center, thereby boosting the ORR activity. This research paves the way for future design strategies integrating nanoparticles and single atoms for efficient electrocatalysis.
AU  - Zhang,W
AU  - Liu,C
AU  - Kucernak,A
AU  - Liu,H
AU  - Wu,J
AU  - Li,S
DO  - 10.1021/acsaem.4c00660
EP  - 5407
PY  - 2024///
SN  - 2574-0962
SP  - 5398
TI  - Synergizing single-atom and carbon-encapsulated nanoparticles of Fe for efficient oxygen reduction and durable Zn-air batteries
T2  - ACS Applied Energy Materials
UR  - http://dx.doi.org/10.1021/acsaem.4c00660
UR  - https://pubs.acs.org/doi/10.1021/acsaem.4c00660
UR  - http://hdl.handle.net/10044/1/112973
VL  - 7
ER  - 

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