Mechanochemical-Driven Uniformly Dispersed Monatomic Fe-NX Coordination in Carbon for Facilitating Efficient Oxygen Reduction Reaction
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27710%2F22%3A10250346" target="_blank" >RIV/61989100:27710/22:10250346 - isvavai.cz</a>
Result on the web
<a href="https://pubs.acs.org/doi/10.1021/acssuschemeng.2c01010" target="_blank" >https://pubs.acs.org/doi/10.1021/acssuschemeng.2c01010</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acssuschemeng.2c01010" target="_blank" >10.1021/acssuschemeng.2c01010</a>
Alternative languages
Result language
angličtina
Original language name
Mechanochemical-Driven Uniformly Dispersed Monatomic Fe-NX Coordination in Carbon for Facilitating Efficient Oxygen Reduction Reaction
Original language description
The need for highly efficient and economical non-Pt electrocatalysts for facilitating the oxygen reduction reaction (ORR) has led to the development of atomically dispersed transition-metal- and nitrogen-doped carbon electrocatalysts. However, this task remains challenging due to the metal components' easy aggregation. The present work addresses this issue by presenting a viable mechanochemical strategy for synthesizing highly dispersed monatomic Fe-Nx coordination in carbon (MFe-NC) electrocatalysts using Fe-zeolitic imidazolate framework precursors. Benefiting from the high density of Fe-Nx coordination, the as-synthesized MFe-NC catalyst exhibits remarkable electrochemical performance toward ORR with greater activity, selectivity, and durability than the commercial Pt/C electrocatalyst. Applying MFe-NC as the catalyst for a Zn-air battery cathode, a high peak power density of 302 mW cm-2 has been achieved. The specific mechanism facilitating the ORR process is unveiled by density functional theory calculations: the favoring of monatomic Fe-N4 sites for the adsorption of intermediate species during the reaction contributes mainly to the high ORR activity.
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
ACS Sustainable Chemistry and Engineering
ISSN
2168-0485
e-ISSN
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Volume of the periodical
10
Issue of the periodical within the volume
23
Country of publishing house
US - UNITED STATES
Number of pages
11
Pages from-to
7553-7563
UT code for WoS article
000811366700001
EID of the result in the Scopus database
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