Synthesis of Picolylamine-Functionalized Graphene via Fluorographene Chemistry for High-Performance Symmetric Supercapacitors
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F25%3A73631916" target="_blank" >RIV/61989592:15310/25:73631916 - isvavai.cz</a>
Alternative codes found
RIV/61989592:15640/25:73631916 RIV/61989100:27640/25:10258845
Result on the web
<a href="https://pubs.acs.org/doi/10.1021/acsanm.5c02131" target="_blank" >https://pubs.acs.org/doi/10.1021/acsanm.5c02131</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acsanm.5c02131" target="_blank" >10.1021/acsanm.5c02131</a>
Alternative languages
Result language
angličtina
Original language name
Synthesis of Picolylamine-Functionalized Graphene via Fluorographene Chemistry for High-Performance Symmetric Supercapacitors
Original language description
Graphene-based materials have emerged as promising candidates for supercapacitor electrodes. However, their low energy density and the poor conductivity of commonly used graphene oxide remain critical challenges. In this study, we leveraged fluorographene chemistry to synthesize a graphene derivative functionalized with out-of-plane pyridine rings, covalently attached on graphene's network (G-Npyr). The resulting material exhibited a specific surface area of 230 m2 g-1 while the removal of fluorine atoms from fluorographene's lattice substantially restored graphene's conductivity. As a result, G-Npyr-based electrodes delivered an energy density of 61 Wh kg-1 at a power density of 907 W kg-1 and a volumetric energy density of 112 Wh L-1. Furthermore, the electrodes demonstrated excellent cycling stability, retaining 90% capacity after 10,000 cycles in 1-ethyl-3-methylimidazolium tetrafluoroborate (EMIMBF4). In contrast to aqueous-based electrolytes, the latter allows the cell to operate in wider voltage window of 3.5 V. In addition to the above, the synthesis is scalable, opening the capability for real-life applications. All in all, these findings highlight the potential use of G-Npyr as a high-performance, scalable electrode material for next-generation supercapacitors.
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
10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)
Result continuities
Project
<a href="/en/project/EH22_008%2F0004587" target="_blank" >EH22_008/0004587: Technology Beyond Nanoscale</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach
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
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Volume of the periodical
8
Issue of the periodical within the volume
31
Country of publishing house
US - UNITED STATES
Number of pages
10
Pages from-to
"15485–15494"
UT code for WoS article
001538002200001
EID of the result in the Scopus database
2-s2.0-105013208037