Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/154780
Title: Atomically dispersed Co₂ -N₆ and Fe-N₄ costructures boost oxygen reduction reaction in both alkaline and acidic media
Authors: Wang, Zhe
Jin, Xiaoyan
Zhu, Chao
Liu, Yipu
Tan, Hua
Ku, Ruiqi
Zhang, Yongqi
Zhou, Liujiang
Liu, Zheng
Hwang, Seong-Ju
Fan, Hong Jin
Keywords: Engineering::Materials
Issue Date: 2021
Source: Wang, Z., Jin, X., Zhu, C., Liu, Y., Tan, H., Ku, R., Zhang, Y., Zhou, L., Liu, Z., Hwang, S. & Fan, H. J. (2021). Atomically dispersed Co₂ -N₆ and Fe-N₄ costructures boost oxygen reduction reaction in both alkaline and acidic media. Advanced Materials, 33(49), 2104718-. https://dx.doi.org/10.1002/adma.202104718
Project: A1983c0026
Journal: Advanced Materials 
Abstract: Polynary transition-metal atom catalysts are promising to supersede platinum (Pt)-based catalysts for oxygen reduction reaction (ORR). Regulating the local configuration of atomic catalysts is the key to catalyst performance enhancement. Different from the previously reported single-atom or dual-atom configurations, a new type of ternary-atom catalyst, which consists of atomically dispersed, nitrogen-coordinated Co-Co dimers, and Fe single sites (i.e., Co2 -N6 and Fe-N4 structures) that are coanchored on highly graphitized carbon supports is developed. This unique atomic ORR catalyst outperforms the catalysts with only Co2 -N6 or Fe-N4 sites in both alkaline and acid conditions. Density functional theory calculations clearly unravels the synergistic effect of the Co2 -N6 and Fe-N4 sites, which can induce higher filling degree of Fe-d orbitals and favors the binding capability to *OH intermediates (the rate determining step). This ternary-atom catalyst may be a promising alternative to Pt to drive the cathodic ORR in zinc-air batteries.
URI: https://hdl.handle.net/10356/154780
ISSN: 0935-9648
DOI: 10.1002/adma.202104718
Rights: This is the peer reviewed version of the following article: Wang, Z., Jin, X., Zhu, C., Liu, Y., Tan, H., Ku, R., Zhang, Y., Zhou, L., Liu, Z., Hwang, S. & Fan, H. J. (2021). Atomically dispersed Co₂ -N₆ and Fe-N₄ costructures boost oxygen reduction reaction in both alkaline and acidic media. Advanced Materials, 33(49), 2104718-, which has been published in final form at https://doi.org/10.1002/adma.202104718. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Fulltext Permission: embargo_20221216
Fulltext Availability: With Fulltext
Appears in Collections:MSE Journal Articles
SPMS Journal Articles

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  Until 2022-12-16
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