Covalent surface grafting of Ti3C2Tx flakes for enhancement of symmetric supercapacitor performance

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F24%3A00586326" target="_blank" >RIV/68378271:_____/24:00586326 - isvavai.cz</a>
Alternative codes found
RIV/60461373:22310/24:43929409
Result on the web
<a href="https://hdl.handle.net/11104/0353878" target="_blank" >https://hdl.handle.net/11104/0353878</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jpowsour.2024.234710" target="_blank" >10.1016/j.jpowsour.2024.234710</a>

Result language
angličtina
Original language name
Covalent surface grafting of Ti3C2Tx flakes for enhancement of symmetric supercapacitor performance
Original language description
In this work the covalent surface modification of MXene flakes (Ti3C2Tx) was proposed for the increasing of the performance of subsequently created symmetric supercapacitor. Covalent surface modification was performed with utilization of diazonium salts (hydrophobic or hydrophilic) and plasmon-assisted photochemistry. Applied procedure allows to block the reactive (weak and/or catalytically active) sites on flakes surface and increase the flakes interplanar spacing, both enhancing the functionality of an MXene-based supercapacitor. Especially pronounced positive effect gives the surface modification with hydrophilic chemical moieties. In particular, we observed increase of supercapacitance from 197 to 284 F g-1 in acidic and from 86 to 142 F g-1 in alkaline conditions for flakes grafted with –C6H4–COOH chemical moieties at scan rate 20 mV/s. The flakes grafted with hydrophobic chemical moieties allow to achieve almost constant value of supercapacitance for different...
Czech name
—
Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project
<a href="/en/project/GA21-09277S" target="_blank" >GA21-09277S: MXenes: plasmon-assisted surface modification and properties tuning</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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