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

Kód výsledku v 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>

Nalezeny alternativní kódy

RIV/60461373:22310/24:43929409

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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...

Název v anglickém jazyce

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

Popis výsledku anglicky

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...

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

<a href="/cs/project/GA21-09277S" target="_blank" >GA21-09277S: MXene: plazmonicky asistovaná modifikace povrchu a optimalizace jeho vlastností</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Power Sources

ISSN

0378-7753

e-ISSN

1873-2755

Svazek periodika

609

Číslo periodika v rámci svazku

July

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

234710

Kód UT WoS článku

001241775700001

EID výsledku v databázi Scopus

2-s2.0-85192712058