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@ARTICLE{Burtsev:611450,
author = {Burtsev, Vasilii and Miliutina, Elena and Shilenko, Vera
and Kukralova, Karolina and Chumakov, Andrei and
Schwartzkopf, Matthias and Svorcik, Vaclav and Lancok, Jan
and Chertopalov, Sergii and Lyutakov, Oleksiy},
title = {{C}ovalent surface grafting of {T}i$_3${C}$_2${T} flakes
for enhancement of symmetric supercapacitor performance},
journal = {Journal of power sources},
volume = {609},
issn = {0378-7753},
address = {New York, NY [u.a.]},
publisher = {Elsevier},
reportid = {PUBDB-2024-04919},
pages = {234710},
year = {2024},
abstract = {In this work the covalent surface modification of MXene
flakes (Ti$_3$C$_2$T$_x$) 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
–C$_6$H$_4$–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 speed of charge discharge. In addition, the
surface grafting prevents the supercapacitor degradation and
decelerates the spontaneous discharge in open circuit mode.
These results suggest strategy for further improvement of
MXene-based supercapacitors as energy storage device.},
cin = {DOOR ; HAS-User / FS-PET-D},
ddc = {620},
cid = {I:(DE-H253)HAS-User-20120731 /
I:(DE-H253)FS-PET-D-20190712},
pnm = {632 - Materials – Quantum, Complex and Functional
Materials (POF4-632) / 6G3 - PETRA III (DESY) (POF4-6G3) /
FS-Proposal: I-20230229 EC (I-20230229-EC)},
pid = {G:(DE-HGF)POF4-632 / G:(DE-HGF)POF4-6G3 /
G:(DE-H253)I-20230229-EC},
experiment = {EXP:(DE-H253)P-P03-20150101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:001241775700001},
doi = {10.1016/j.jpowsour.2024.234710},
url = {https://bib-pubdb1.desy.de/record/611450},
}