Co-Cu Bimetallic Metal Organic Framework Catalyst Outperforms the Pt/C Benchmark for Oxygen Reduction
Funding Number
-1827745
Funding Sponsor
National Science Foundation
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https://doi.org/10.1021/jacs.1c01096
Document Type
Research Article
Publication Title
Journal of the American Chemical Society
Publication Date
3-17-2021
doi
10.1021/jacs.1c01096
Abstract
Platinum (Pt)-based-nanomaterials are currently the most successful catalysts for the oxygen reduction reaction (ORR) in electrochemical energy conversion devices such as fuel cells and metal-air batteries. Nonetheless, Pt catalysts have serious drawbacks, including low abundance in nature, sluggish kinetics, and very high costs, which limit their practical applications. Herein, we report the first rationally designed nonprecious Co-Cu bimetallic metal-organic framework (MOF) using a low-temperature hydrothermal method that outperforms the electrocatalytic activity of Pt/C for ORR in alkaline environments. The MOF catalyst surpassed the ORR performance of Pt/C, exhibiting an onset potential of 1.06 V vs RHE, a half-wave potential of 0.95 V vs RHE, and a higher electrochemical stability (ΔE1/2 = 30 mV) after 1000 ORR cycles in 0.1 M NaOH. Additionally, it outperformed Pt/C in terms of power density and cyclability in zinc-air batteries. This outstanding behavior was attributed to the unique electronic synergy of the Co-Cu bimetallic centers in the MOF network, which was revealed by XPS and PDOS.
First Page
4064
Last Page
4073
Recommended Citation
APA Citation
Sanad, M.
Puente Santiago, A.
Tolba, S.
Ahsan, M.
...
(2021). Co-Cu Bimetallic Metal Organic Framework Catalyst Outperforms the Pt/C Benchmark for Oxygen Reduction. Journal of the American Chemical Society, 143(10), 4064–4073.
10.1021/jacs.1c01096
https://fount.aucegypt.edu/faculty_journal_articles/2764
MLA Citation
Sanad, Mohamed Fathi, et al.
"Co-Cu Bimetallic Metal Organic Framework Catalyst Outperforms the Pt/C Benchmark for Oxygen Reduction." Journal of the American Chemical Society, vol. 143,no. 10, 2021, pp. 4064–4073.
https://fount.aucegypt.edu/faculty_journal_articles/2764