Robust Method for Uniform Coating of Carbon Nanotubes with V2O5 for Next-Generation Transparent Electrodes and Li-Ion Batteries
Full article
Journal |
RSC Advances
ISSN: 2046-2069
|
Output data |
Year: 2023,
Volume: 13,
Number: 37,
Article number
: 25817,
Pages count
: 11
DOI:
10.1039/d3ra04342h
|
Tags |
Cathodes; Coatings; Electrochemical electrodes; Lithium compounds; Lithium-ion batteries; Sheet metal; Single-walled carbon nanotubes (SWCN); Vanadium pentoxide; Work function |
Authors |
Ilatovskii Daniil A.
1
,
Krasnikov Dmitry V.
1
,
Goldt Anastasia E.
1
,
Mousavihashemi Seyedabolfazl
2
,
Sainio Jani
2
,
Khabushev Eldar M.
1
,
Alekseeva Alena A.
1
,
Luchkin Sergey Yu.
1
,
Vinokurov Zakhar S.
3
,
Shmakov Alexander N.
3
,
Elakshar Aly
1
,
Kallio Tanja
2
,
Nasibulin Albert G.
1
|
Affiliations |
1 |
Skolkovo Institute of Science and Technology, Bolshoy Boulevard 30, bd. 1, Moscow, Russian Federation
|
2 |
Aalto University, Kemistintie 1, 02150 Espoo, Finland
|
3 |
Boreskov Institute of Catalysis SB RAS, Lavrentieva Avenue 5, Novosibirsk, Russian Federation
|
|
Funding (4)
1
|
Council for Grants of the President of the Russian Federation
|
НШ-1330.2022.1.3
|
2
|
Russian Foundation for Basic Research
|
20-33-90324 (121041600132-5)
|
3
|
Russian Science Foundation
|
22-13-00436 (122080500138-6)
|
4
|
Business Finland
|
211849
|
Composites comprising vanadium-pentoxide (V2O5) and single-walled carbon nanotubes (SWCNTs) are promising components for emerging applications in optoelectronics, solar cells, chemical and electrochemical sensors, etc. We propose a novel, simple, and facile approach for SWCNT covering with V2O5 by spin coating under ambient conditions. With the hydrolysis-polycondensation of the precursor (vanadyl triisopropoxide) directly on the surface of SWCNTs, the nm-thick layer of oxide is amorphous with a work function of 4.8 eV. The material recrystallizes after thermal treatment at 600 °C, achieving the work function of 5.8 eV. The key advantages of the method are that the obtained coating is uniform with a tunable thickness and does not require vacuuming or heating during processing. We demonstrate the groundbreaking results for two V2O5/SWCNT applications: transparent electrode and cathode for Li-ion batteries. As a transparent electrode, the composite shows stable sheet resistance of 160 Ω sq−1 at a 90% transmittance (550 nm) – the best performance reported for SWCNTs doped by metal oxides. As a cathode material, the obtained specific capacity (330 mA h g−1) is the highest among all the other V2O5/SWCNT cathodes reported so far. This approach opens new horizons for the creation of the next generation of metal oxide composites for various applications, including optoelectronics and electrochemistry.