Enhanced dual atomic Fe-Ni sites in N-doped carbon for bifunctional oxygen electrocatalysis
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27710%2F22%3A10251028" target="_blank" >RIV/61989100:27710/22:10251028 - isvavai.cz</a>
Result on the web
<a href="https://www.webofscience.com/wos/woscc/full-record/WOS:000882774500004" target="_blank" >https://www.webofscience.com/wos/woscc/full-record/WOS:000882774500004</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.mtener.2022.101171" target="_blank" >10.1016/j.mtener.2022.101171</a>
Alternative languages
Result language
angličtina
Original language name
Enhanced dual atomic Fe-Ni sites in N-doped carbon for bifunctional oxygen electrocatalysis
Original language description
Atomically dispersed catalysts with high electrocatalytic performance are emerging as promising elec-trocatalysts for energy conversion and storage devices. Nevertheless, achieving superior bifunctional catalytic activity with single-atom catalysts toward reactions involving multi-intermediates is still facing great challenges. Herein, dual-atomic Fe-Ni pairs dispersed in hierarchical porous nitrogen-doped carbon (FeNi-HPNC) catalysts were successfully synthesized using a facile mechanochemical strategy. By virtue of the engineered electronic structure of Fe coordinated with Ni, the as-synthesized FeNi-HPNC with atomically dispersed dual-metal active sites and pore-rich structure exhibits remarkable bifunctional activities. A high half-wave potential of 0.868 V for oxygen reduction reaction and a low potential of 1.59 V at 10 mA/cm2 for oxygen evolution reaction have been obtained for FeNi-HPNC, which are superior to the single-atom catalysts of Fe-HPNC and Ni-HPNC, respectively, and are even greater than the precious metal catalysts. Combined experimental and theoretical results have revealed that the enhanced bifunctional catalytic activity of FeNi-HPNC is ascribed to the electronic interaction of Fe-Ni sites, which decreases the adsorption energy of oxygen intermediates during oxygen reduction reac-tion/oxygen evolution reaction. Furthermore, the practical application of FeNi-HPNC catalysts in Zn-air batteries has been demonstrated; a high peak power density and long-term durability are delivered.(c) 2022 Elsevier Ltd. All rights reserved.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20400 - Chemical engineering
Result continuities
Project
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Continuities
V - Vyzkumna aktivita podporovana z jinych verejnych zdroju
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Materials Today Energy
ISSN
2468-6069
e-ISSN
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Volume of the periodical
30
Issue of the periodical within the volume
December 2022
Country of publishing house
US - UNITED STATES
Number of pages
10
Pages from-to
nestrankovano
UT code for WoS article
000882774500004
EID of the result in the Scopus database
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