Sun, Yi, Yi, Ruowei, Zhao, Yinchao, Liu, Chenguang, Yuan, Yudan, Geng, Xianwei, Li, Weixuan, Feng, Zhichen, Mitrovic, Ivona ORCID: 0000-0003-4816-8905, Yang, Li ORCID: 0000-0002-1040-4223 et al (show 1 more authors)
(2021)
Improved pseudocapacitances of supercapacitors based on electrodes of nitrogen-doped Ti3C2Tx nanosheets with in-situ growth of carbon nanotubes.
Journal of Alloys and Compounds, 859.
p. 158347.
Text
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Abstract
A facile strategy involving only liquid mixing, drying, and annealing processes has been designed to fabricate a new MXene-based material containing nitrogen-doped carbon nanotubes grown on the nitrogen-modified titanium carbides (NCMX). During the thermal treatment, the nitrogen doping is dually achieved in MXene nanosheets and carbon nanotubes while the in-situ growth of carbon nanotubes occurs. The NCMX electrode exhibits the well-designed structure with the promoted specific surface area and specific capacitance. More attractively, the resultant NCMX-4 material shows extraordinary improved electrochemical capacitances of 299.52 F g−1 at the scan rate of 2 mV s−1 in the 3 M H2SO4 electrolyte, which is remarkably more superior than those of the pure un-doped one (74.98 F g−1). It delivers an excellent capacitance retention capability of 84.2% after 10,000 cycles. Our results highlight that the strategy of fabricating novel NCMX materials here can be readily applied to a large industrial scale for improving the pseudocapacitance of supercapacitors.
Item Type: | Article |
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Uncontrolled Keywords: | Two-dimensional titanium carbide, Nitrogen doping, Carbon nanotubes, Pseudocapacitances |
Depositing User: | Symplectic Admin |
Date Deposited: | 12 Jan 2021 11:18 |
Last Modified: | 18 Jan 2023 23:05 |
DOI: | 10.1016/j.jallcom.2020.158347 |
Related URLs: | |
URI: | https://livrepository.liverpool.ac.uk/id/eprint/3111128 |