In Situ Engineered Multimetal Phases of NiTe/Fe <sub>3</sub> O <sub>4</sub> on Few-Layer MXene for Supercapattery Cathodes
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61988987%3A17310%2F25%3AA2603C83" target="_blank" >RIV/61988987:17310/25:A2603C83 - isvavai.cz</a>
Result on the web
<a href="https://pubs.acs.org/doi/10.1021/acsanm.5c04726" target="_blank" >https://pubs.acs.org/doi/10.1021/acsanm.5c04726</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acsanm.5c04726" target="_blank" >10.1021/acsanm.5c04726</a>
Alternative languages
Result language
angličtina
Original language name
In Situ Engineered Multimetal Phases of NiTe/Fe <sub>3</sub> O <sub>4</sub> on Few-Layer MXene for Supercapattery Cathodes
Original language description
The strategic integration of multimetal phaseswithin nanoengineered heterostructures enables the synergisticutilization of enriched redox sites, optimized electronic structures,and stabilized nanointerfaces. Herein, we present a rationallydesigned high-performance hybrid cathode material achieved via insitu hydrothermal growth of NiTe/Fe3O4 (NTFO) nanoparticles(∼3−4 nm) on alkali-assisted flocculated few-layer MXene (f-MXene, ∼2.1 nm). The few-layer morphology of f-MXenemaximizes the interfacial contact, improves the electrolyteaccessibility, and provides robust mechanical support. Benefitingfrom the nanoscale advantages of the individual components, richredox activity of NTFO, and metallic conductivity as well as highinterfacial area of f-MXene, the resulting NTFO/f-MXene(NTFO@f-MX) composites demonstrate exceptional electrochemical performance. Specifically, the NTFO@f-MX60 heterostructurewith an optimized f-MXene content exhibits a high specific capacitance of 1347.8 F/g (808.7 C/g) at 1 A/g and maintainsan outstanding rate performance of 1039.5 F/g (623.7 C/g) at 9 A/g. The NTFO@f-MX60∥AC (AC, activated carbon) asymmetricdevice delivers a high energy density of 37.3 Wh/kg and a power density of 7200 W/kg, outperforming many previously reportedsupercaps. Furthermore, the device retains 89.1% of its initial capacitance for up to 6000 charge−discharge cycles at 9 A/g. Thisoutstanding charge storage behavior is attributed to the synergistic interfacial effects at the nanoscale, where intimate NTFO−f-MXene contact facilitates enhanced faradaic activity, efficient charge transport, and mechanical stability. Our findings underscore thevital role of multimetal phases and precisely engineered heterointerfaces in advancing next-generation hybrid energy storage devices.
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
10400 - Chemical sciences
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
ACS Applied Nano Materials
ISSN
2574-0970
e-ISSN
2574-0970
Volume of the periodical
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Issue of the periodical within the volume
48
Country of publishing house
US - UNITED STATES
Number of pages
15
Pages from-to
23273-23287
UT code for WoS article
001623192600001
EID of the result in the Scopus database
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